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[Commits] r23054 - in /fsf/trunk/libc: ./ math/ ports/ ports/sysdeps/unix/sysv/linux/aarch64/ sysdeps/i386/fpu/



Author: eglibc
Date: Mon May 13 00:01:52 2013
New Revision: 23054

Log:
Import glibc-mainline for 2013-05-13

Modified:
    fsf/trunk/libc/ChangeLog
    fsf/trunk/libc/math/gen-libm-test.pl
    fsf/trunk/libc/math/libm-test.inc
    fsf/trunk/libc/ports/ChangeLog.aarch64
    fsf/trunk/libc/ports/sysdeps/unix/sysv/linux/aarch64/clone.S
    fsf/trunk/libc/ports/sysdeps/unix/sysv/linux/aarch64/ioctl.S
    fsf/trunk/libc/sysdeps/i386/fpu/libm-test-ulps

Modified: fsf/trunk/libc/ChangeLog
==============================================================================
--- fsf/trunk/libc/ChangeLog (original)
+++ fsf/trunk/libc/ChangeLog Mon May 13 00:01:52 2013
@@ -1,3 +1,112 @@
+2013-05-12  Joseph Myers  <joseph@xxxxxxxxxxxxxxxx>
+
+	* math/libm-test.inc (struct test_fff_f_data): New type.
+	(RUN_TEST_LOOP_fff_f): New macro.
+	(fma_test_data): New variable.
+	(fma_test): Run tests with RUN_TEST_LOOP_fff_f.
+	(fma_towardzero_test_data): New variable.
+	(fma_test_towardzero): Run tests with RUN_TEST_LOOP_fff_f.
+	(fma_downward_test_data): New variable.
+	(fma_test_downward): Run tests with RUN_TEST_LOOP_fff_f.
+	(fma_upward_test_data): New variable.
+	(fma_test_upward): Run tests with RUN_TEST_LOOP_fff_f.
+
+	* math/libm-test.inc (BUILD_COMPLEX_ULP): New macro.
+	(struct test_c_c_data): New type.
+	(RUN_TEST_LOOP_c_c): New macro.
+	(cacos_test_data): New variable.
+	(cacos_test): Run tests with RUN_TEST_LOOP_c_c.
+	(cacosh_test_data): New variable.
+	(cacosh_test): Run tests with RUN_TEST_LOOP_c_c.
+	(casin_test_data): New variable.
+	(casin_test): Run tests with RUN_TEST_LOOP_c_c.
+	(casinh_test_data): New variable.
+	(casinh_test): Run tests with RUN_TEST_LOOP_c_c.
+	(catan_test_data): New variable.
+	(catan_test): Run tests with RUN_TEST_LOOP_c_c.
+	(catanh_test_data): New variable.
+	(catanh_test): Run tests with RUN_TEST_LOOP_c_c.
+	(ccos_test_data): New variable.
+	(ccos_test): Run tests with RUN_TEST_LOOP_c_c.
+	(ccosh_test_data): New variable.
+	(ccosh_test): Run tests with RUN_TEST_LOOP_c_c.
+	(cexp_test_data): New variable.
+	(cexp_test): Run tests with RUN_TEST_LOOP_c_c.
+	(clog_test_data): New variable.
+	(clog_test): Run tests with RUN_TEST_LOOP_c_c.
+	(clog10_test_data): New variable.
+	(clog10_test): Run tests with RUN_TEST_LOOP_c_c.
+	(conj_test_data): New variable.
+	(conj_test): Run tests with RUN_TEST_LOOP_c_c.
+	(cproj_test_data): New variable.
+	(cproj_test): Run tests with RUN_TEST_LOOP_c_c.
+	(csin_test_data): New variable.
+	(csin_test): Run tests with RUN_TEST_LOOP_c_c.
+	(csinh_test_data): New variable.
+	(csinh_test): Run tests with RUN_TEST_LOOP_c_c.
+	(csqrt_test_data): New variable.
+	(csqrt_test): Run tests with RUN_TEST_LOOP_c_c.
+	(ctan_test_data): New variable.
+	(ctan_test): Run tests with RUN_TEST_LOOP_c_c.
+	(ctan_tonearest_test_data): New variable.
+	(ctan_test_tonearest): Run tests with RUN_TEST_LOOP_c_c.
+	(ctan_towardzero_test_data): New variable.
+	(ctan_test_towardzero): Run tests with RUN_TEST_LOOP_c_c.
+	(ctan_downward_test_data): New variable.
+	(ctan_test_downward): Run tests with RUN_TEST_LOOP_c_c.
+	(ctan_upward_test_data): New variable.
+	(ctan_test_upward): Run tests with RUN_TEST_LOOP_c_c.
+	(ctanh_test_data): New variable.
+	(ctanh_test): Run tests with RUN_TEST_LOOP_c_c.
+	(ctanh_tonearest_test_data): New variable.
+	(ctanh_test_tonearest): Run tests with RUN_TEST_LOOP_c_c.
+	(ctanh_towardzero_test_data): New variable.
+	(ctanh_test_towardzero): Run tests with RUN_TEST_LOOP_c_c.
+	(ctanh_downward_test_data): New variable.
+	(ctanh_test_downward): Run tests with RUN_TEST_LOOP_c_c.
+	(ctanh_upward_test_data): New variable.
+	(ctanh_test_upward): Run tests with RUN_TEST_LOOP_c_c.
+	* math/gen-libm-test.pl (get_ulps): Use BUILD_COMPLEX_ULP instead
+	of BUILD_COMPLEX.
+
+	* math/libm-test.inc (struct test_ff_f_data): New type.
+	(struct test_ff_f_data_nexttoward): Likewise.
+	(RUN_TEST_LOOP_2_f): New macro.
+	(RUN_TEST_LOOP_ff_f): Likewise.
+	(atan2_test_data): New variable.
+	(atan2_test): Run tests with RUN_TEST_LOOP_ff_f.
+	(copysign_test_data): New variable.
+	(copysign_test): Run tests with RUN_TEST_LOOP_ff_f.
+	(fdim_test_data): New variable.
+	(fdim_test): Run tests with RUN_TEST_LOOP_ff_f.
+	(fmax_test_data): New variable.
+	(fmax_test): Run tests with RUN_TEST_LOOP_ff_f.
+	(fmin_test_data): New variable.
+	(fmin_test): Run tests with RUN_TEST_LOOP_ff_f.
+	(fmod_test_data): New variable.
+	(fmod_test): Run tests with RUN_TEST_LOOP_ff_f.
+	(hypot_test_data): New variable.
+	(hypot_test): Run tests with RUN_TEST_LOOP_ff_f.
+	(nextafter_test_data): New variable.
+	(nextafter_test): Run tests with RUN_TEST_LOOP_ff_f.
+	(nexttoward_test_data): New variable.
+	(nexttoward_test): Run tests with RUN_TEST_LOOP_ff_f.
+	(pow_test_data): New variable.
+	(pow_test): Run tests with RUN_TEST_LOOP_ff_f.
+	(pow_tonearest_test_data): New variable.
+	(pow_test_tonearest): Run tests with RUN_TEST_LOOP_ff_f.
+	(pow_towardzero_test_data): New variable.
+	(pow_test_towardzero): Run tests with RUN_TEST_LOOP_ff_f.
+	(pow_downward_test_data): New variable.
+	(pow_test_downward): Run tests with RUN_TEST_LOOP_ff_f.
+	(pow_upward_test_data): New variable.
+	(pow_test_upward): Run tests with RUN_TEST_LOOP_ff_f.
+	(remainder_test_data): New variable.
+	(remainder_test): Run tests with RUN_TEST_LOOP_ff_f.
+	(scalb_test_data): New variable.
+	(scalb_test): Run tests with RUN_TEST_LOOP_ff_f.
+	* sysdeps/i386/fpu/libm-test-ulps: Update.
+
 2013-05-11  Joseph Myers  <joseph@xxxxxxxxxxxxxxxx>
 
 	* math/libm-test.inc (fma_test): Use max_value instead of local

Modified: fsf/trunk/libc/math/gen-libm-test.pl
==============================================================================
--- fsf/trunk/libc/math/gen-libm-test.pl (original)
+++ fsf/trunk/libc/math/gen-libm-test.pl Mon May 13 00:01:52 2013
@@ -675,12 +675,12 @@
 
   if ($type eq 'complex') {
     my ($res);
-    # Return 0 instead of BUILD_COMPLEX (0,0)
+    # Return 0 instead of BUILD_COMPLEX_ULP (0,0)
     if (!exists $results{$test}{'real'}{'ulp'}{$float} &&
 	!exists $results{$test}{'imag'}{'ulp'}{$float}) {
       return "0";
     }
-    $res = 'BUILD_COMPLEX (';
+    $res = 'BUILD_COMPLEX_ULP (';
     $res .= (exists $results{$test}{'real'}{'ulp'}{$float}
 	     ? $results{$test}{'real'}{'ulp'}{$float} : "0");
     $res .= ', ';

Modified: fsf/trunk/libc/math/libm-test.inc
==============================================================================
--- fsf/trunk/libc/math/libm-test.inc (original)
+++ fsf/trunk/libc/math/libm-test.inc Mon May 13 00:01:52 2013
@@ -265,7 +265,7 @@
      __real__ __retval = (real);					      \
      __imag__ __retval = (imag);					      \
      __retval; })
-
+#define BUILD_COMPLEX_ULP(real, imag) ((real) + I * (imag))
 
 #define MANT_DIG CHOOSE ((LDBL_MANT_DIG-1), (DBL_MANT_DIG-1), (FLT_MANT_DIG-1),  \
 			 (LDBL_MANT_DIG-1), (DBL_MANT_DIG-1), (FLT_MANT_DIG-1))
@@ -872,6 +872,39 @@
   FLOAT max_ulp;
   int exceptions;
 };
+struct test_ff_f_data
+{
+  const char *test_name;
+  FLOAT arg1, arg2;
+  FLOAT expected;
+  FLOAT max_ulp;
+  int exceptions;
+};
+struct test_ff_f_data_nexttoward
+{
+  const char *test_name;
+  FLOAT arg1;
+  long double arg2;
+  FLOAT expected;
+  FLOAT max_ulp;
+  int exceptions;
+};
+struct test_fff_f_data
+{
+  const char *test_name;
+  FLOAT arg1, arg2, arg3;
+  FLOAT expected;
+  FLOAT max_ulp;
+  int exceptions;
+};
+struct test_c_c_data
+{
+  const char *test_name;
+  FLOAT argr, argc;
+  FLOAT expr, expc;
+  __complex__ FLOAT max_ulp;
+  int exceptions;
+};
 
 /* Set the rounding mode, or restore the saved value.  */
 #define IF_ROUND_INIT_	/* Empty.  */
@@ -914,7 +947,15 @@
 		     MAX_ULP, EXCEPTIONS)				\
   check_float (TEST_NAME, FUNC (FUNC_NAME) (ARG1, ARG2), EXPECTED,	\
 	       MAX_ULP, EXCEPTIONS)
+#define RUN_TEST_LOOP_2_f(FUNC_NAME, ARRAY, ROUNDING_MODE)		\
+  IF_ROUND_INIT_ ## ROUNDING_MODE					\
+    for (size_t i = 0; i < sizeof (ARRAY) / sizeof (ARRAY)[0]; i++)	\
+      RUN_TEST_2_f ((ARRAY)[i].test_name, FUNC_NAME, (ARRAY)[i].arg1,	\
+		    (ARRAY)[i].arg2, (ARRAY)[i].expected,		\
+		    (ARRAY)[i].max_ulp,	(ARRAY)[i].exceptions);		\
+  ROUND_RESTORE_ ## ROUNDING_MODE
 #define RUN_TEST_ff_f RUN_TEST_2_f
+#define RUN_TEST_LOOP_ff_f RUN_TEST_LOOP_2_f
 #define RUN_TEST_fi_f RUN_TEST_2_f
 #define RUN_TEST_fl_f RUN_TEST_2_f
 #define RUN_TEST_if_f RUN_TEST_2_f
@@ -922,6 +963,14 @@
 		       EXPECTED, MAX_ULP, EXCEPTIONS)		\
   check_float (TEST_NAME, FUNC (FUNC_NAME) (ARG1, ARG2, ARG3),	\
 	       EXPECTED, MAX_ULP, EXCEPTIONS)
+#define RUN_TEST_LOOP_fff_f(FUNC_NAME, ARRAY, ROUNDING_MODE)		\
+  IF_ROUND_INIT_ ## ROUNDING_MODE					\
+    for (size_t i = 0; i < sizeof (ARRAY) / sizeof (ARRAY)[0]; i++)	\
+      RUN_TEST_fff_f ((ARRAY)[i].test_name, FUNC_NAME, (ARRAY)[i].arg1,	\
+		      (ARRAY)[i].arg2, (ARRAY)[i].arg3,			\
+		      (ARRAY)[i].expected, (ARRAY)[i].max_ulp,		\
+		      (ARRAY)[i].exceptions);				\
+  ROUND_RESTORE_ ## ROUNDING_MODE
 #define RUN_TEST_c_f(TEST_NAME, FUNC_NAME, ARG1, ARG2, EXPECTED,	\
 		     MAX_ULP, EXCEPTIONS)				\
   check_float (TEST_NAME,						\
@@ -990,6 +1039,13 @@
 		 FUNC (FUNC_NAME) (BUILD_COMPLEX (ARGR, ARGC)),		\
 		 BUILD_COMPLEX (EXPR, EXPC),				\
 		 MAX_ULP, EXCEPTIONS)
+#define RUN_TEST_LOOP_c_c(FUNC_NAME, ARRAY, ROUNDING_MODE)		\
+  IF_ROUND_INIT_ ## ROUNDING_MODE					\
+    for (size_t i = 0; i < sizeof (ARRAY) / sizeof (ARRAY)[0]; i++)	\
+      RUN_TEST_c_c ((ARRAY)[i].test_name, FUNC_NAME, (ARRAY)[i].argr,	\
+		    (ARRAY)[i].argc, (ARRAY)[i].expr, (ARRAY)[i].expc,	\
+		    (ARRAY)[i].max_ulp, (ARRAY)[i].exceptions);		\
+  ROUND_RESTORE_ ## ROUNDING_MODE
 #define RUN_TEST_cc_c(TEST_NAME, FUNC_NAME, ARG1R, ARG1C, ARG2R, ARG2C,	\
 		      EXPR, EXPC, MAX_ULP, EXCEPTIONS)			\
   check_complex (TEST_NAME,						\
@@ -1504,6 +1560,82 @@
   END (atanh);
 }
 
+static const struct test_ff_f_data atan2_test_data[] =
+  {
+    START_DATA (atan2),
+    /* atan2 (0,x) == 0 for x > 0.  */
+    TEST_ff_f (atan2, 0, 1, 0),
+
+    /* atan2 (-0,x) == -0 for x > 0.  */
+    TEST_ff_f (atan2, minus_zero, 1, minus_zero),
+
+    TEST_ff_f (atan2, 0, 0, 0),
+    TEST_ff_f (atan2, minus_zero, 0, minus_zero),
+
+    /* atan2 (+0,x) == +pi for x < 0.  */
+    TEST_ff_f (atan2, 0, -1, M_PIl),
+
+    /* atan2 (-0,x) == -pi for x < 0.  */
+    TEST_ff_f (atan2, minus_zero, -1, -M_PIl),
+
+    TEST_ff_f (atan2, 0, minus_zero, M_PIl),
+    TEST_ff_f (atan2, minus_zero, minus_zero, -M_PIl),
+
+    /* atan2 (y,+0) == pi/2 for y > 0.  */
+    TEST_ff_f (atan2, 1, 0, M_PI_2l),
+
+    /* atan2 (y,-0) == pi/2 for y > 0.  */
+    TEST_ff_f (atan2, 1, minus_zero, M_PI_2l),
+
+    /* atan2 (y,+0) == -pi/2 for y < 0.  */
+    TEST_ff_f (atan2, -1, 0, -M_PI_2l),
+
+    /* atan2 (y,-0) == -pi/2 for y < 0.  */
+    TEST_ff_f (atan2, -1, minus_zero, -M_PI_2l),
+
+    /* atan2 (y,inf) == +0 for finite y > 0.  */
+    TEST_ff_f (atan2, 1, plus_infty, 0),
+
+    /* atan2 (y,inf) == -0 for finite y < 0.  */
+    TEST_ff_f (atan2, -1, plus_infty, minus_zero),
+
+    /* atan2(+inf, x) == pi/2 for finite x.  */
+    TEST_ff_f (atan2, plus_infty, -1, M_PI_2l),
+
+    /* atan2(-inf, x) == -pi/2 for finite x.  */
+    TEST_ff_f (atan2, minus_infty, 1, -M_PI_2l),
+
+    /* atan2 (y,-inf) == +pi for finite y > 0.  */
+    TEST_ff_f (atan2, 1, minus_infty, M_PIl),
+
+    /* atan2 (y,-inf) == -pi for finite y < 0.  */
+    TEST_ff_f (atan2, -1, minus_infty, -M_PIl),
+
+    TEST_ff_f (atan2, plus_infty, plus_infty, M_PI_4l),
+    TEST_ff_f (atan2, minus_infty, plus_infty, -M_PI_4l),
+    TEST_ff_f (atan2, plus_infty, minus_infty, M_PI_34l),
+    TEST_ff_f (atan2, minus_infty, minus_infty, -M_PI_34l),
+    TEST_ff_f (atan2, qnan_value, qnan_value, qnan_value),
+
+    TEST_ff_f (atan2, max_value, max_value, M_PI_4l),
+
+    TEST_ff_f (atan2, max_value, min_value, M_PI_2l),
+    TEST_ff_f (atan2, -max_value, -min_value, -M_PI_2l),
+
+    TEST_ff_f (atan2, 0.75L, 1, 0.643501108793284386802809228717322638L),
+    TEST_ff_f (atan2, -0.75L, 1.0L, -0.643501108793284386802809228717322638L),
+    TEST_ff_f (atan2, 0.75L, -1.0L, 2.49809154479650885165983415456218025L),
+    TEST_ff_f (atan2, -0.75L, -1.0L, -2.49809154479650885165983415456218025L),
+    TEST_ff_f (atan2, 0.390625L, .00029L, 1.57005392693128974780151246612928941L),
+    TEST_ff_f (atan2, 1.390625L, 0.9296875L, 0.981498387184244311516296577615519772L),
+
+    TEST_ff_f (atan2, -0.00756827042671106339L, -.001792735857538728036L, -1.80338464113663849327153994379639112L),
+#if defined TEST_LDOUBLE && LDBL_MANT_DIG >= 64
+    TEST_ff_f (atan2, 0x1.00000000000001p0L, 0x1.00000000000001p0L, M_PI_4l),
+#endif
+    END_DATA (atan2)
+  };
+
 static void
 atan2_test (void)
 {
@@ -1514,78 +1646,7 @@
     return;
 
   START (atan2);
-
-  /* atan2 (0,x) == 0 for x > 0.  */
-  TEST_ff_f (atan2, 0, 1, 0);
-
-  /* atan2 (-0,x) == -0 for x > 0.  */
-  TEST_ff_f (atan2, minus_zero, 1, minus_zero);
-
-  TEST_ff_f (atan2, 0, 0, 0);
-  TEST_ff_f (atan2, minus_zero, 0, minus_zero);
-
-  /* atan2 (+0,x) == +pi for x < 0.  */
-  TEST_ff_f (atan2, 0, -1, M_PIl);
-
-  /* atan2 (-0,x) == -pi for x < 0.  */
-  TEST_ff_f (atan2, minus_zero, -1, -M_PIl);
-
-  TEST_ff_f (atan2, 0, minus_zero, M_PIl);
-  TEST_ff_f (atan2, minus_zero, minus_zero, -M_PIl);
-
-  /* atan2 (y,+0) == pi/2 for y > 0.  */
-  TEST_ff_f (atan2, 1, 0, M_PI_2l);
-
-  /* atan2 (y,-0) == pi/2 for y > 0.  */
-  TEST_ff_f (atan2, 1, minus_zero, M_PI_2l);
-
-  /* atan2 (y,+0) == -pi/2 for y < 0.  */
-  TEST_ff_f (atan2, -1, 0, -M_PI_2l);
-
-  /* atan2 (y,-0) == -pi/2 for y < 0.  */
-  TEST_ff_f (atan2, -1, minus_zero, -M_PI_2l);
-
-  /* atan2 (y,inf) == +0 for finite y > 0.  */
-  TEST_ff_f (atan2, 1, plus_infty, 0);
-
-  /* atan2 (y,inf) == -0 for finite y < 0.  */
-  TEST_ff_f (atan2, -1, plus_infty, minus_zero);
-
-  /* atan2(+inf, x) == pi/2 for finite x.  */
-  TEST_ff_f (atan2, plus_infty, -1, M_PI_2l);
-
-  /* atan2(-inf, x) == -pi/2 for finite x.  */
-  TEST_ff_f (atan2, minus_infty, 1, -M_PI_2l);
-
-  /* atan2 (y,-inf) == +pi for finite y > 0.  */
-  TEST_ff_f (atan2, 1, minus_infty, M_PIl);
-
-  /* atan2 (y,-inf) == -pi for finite y < 0.  */
-  TEST_ff_f (atan2, -1, minus_infty, -M_PIl);
-
-  TEST_ff_f (atan2, plus_infty, plus_infty, M_PI_4l);
-  TEST_ff_f (atan2, minus_infty, plus_infty, -M_PI_4l);
-  TEST_ff_f (atan2, plus_infty, minus_infty, M_PI_34l);
-  TEST_ff_f (atan2, minus_infty, minus_infty, -M_PI_34l);
-  TEST_ff_f (atan2, qnan_value, qnan_value, qnan_value);
-
-  TEST_ff_f (atan2, max_value, max_value, M_PI_4l);
-
-  TEST_ff_f (atan2, max_value, min_value, M_PI_2l);
-  TEST_ff_f (atan2, -max_value, -min_value, -M_PI_2l);
-
-  TEST_ff_f (atan2, 0.75L, 1, 0.643501108793284386802809228717322638L);
-  TEST_ff_f (atan2, -0.75L, 1.0L, -0.643501108793284386802809228717322638L);
-  TEST_ff_f (atan2, 0.75L, -1.0L, 2.49809154479650885165983415456218025L);
-  TEST_ff_f (atan2, -0.75L, -1.0L, -2.49809154479650885165983415456218025L);
-  TEST_ff_f (atan2, 0.390625L, .00029L, 1.57005392693128974780151246612928941L);
-  TEST_ff_f (atan2, 1.390625L, 0.9296875L, 0.981498387184244311516296577615519772L);
-
-  TEST_ff_f (atan2, -0.00756827042671106339L, -.001792735857538728036L, -1.80338464113663849327153994379639112L);
-#if defined TEST_LDOUBLE && LDBL_MANT_DIG >= 64
-  TEST_ff_f (atan2, 0x1.00000000000001p0L, 0x1.00000000000001p0L, M_PI_4l);
-#endif
-
+  RUN_TEST_LOOP_ff_f (atan2, atan2_test_data, );
   END (atan2);
 }
 
@@ -1636,6 +1697,690 @@
 }
 
 
+static const struct test_c_c_data cacos_test_data[] =
+  {
+    START_DATA (cacos),
+    TEST_c_c (cacos, 0, 0, M_PI_2l, minus_zero),
+    TEST_c_c (cacos, minus_zero, 0, M_PI_2l, minus_zero),
+    TEST_c_c (cacos, minus_zero, minus_zero, M_PI_2l, 0.0),
+    TEST_c_c (cacos, 0, minus_zero, M_PI_2l, 0.0),
+
+    TEST_c_c (cacos, minus_infty, plus_infty, M_PI_34l, minus_infty),
+    TEST_c_c (cacos, minus_infty, minus_infty, M_PI_34l, plus_infty),
+
+    TEST_c_c (cacos, plus_infty, plus_infty, M_PI_4l, minus_infty),
+    TEST_c_c (cacos, plus_infty, minus_infty, M_PI_4l, plus_infty),
+
+    TEST_c_c (cacos, -10.0, plus_infty, M_PI_2l, minus_infty),
+    TEST_c_c (cacos, -10.0, minus_infty, M_PI_2l, plus_infty),
+    TEST_c_c (cacos, 0, plus_infty, M_PI_2l, minus_infty),
+    TEST_c_c (cacos, 0, minus_infty, M_PI_2l, plus_infty),
+    TEST_c_c (cacos, 0.1L, plus_infty, M_PI_2l, minus_infty),
+    TEST_c_c (cacos, 0.1L, minus_infty, M_PI_2l, plus_infty),
+
+    TEST_c_c (cacos, minus_infty, 0, M_PIl, minus_infty),
+    TEST_c_c (cacos, minus_infty, minus_zero, M_PIl, plus_infty),
+    TEST_c_c (cacos, minus_infty, 100, M_PIl, minus_infty),
+    TEST_c_c (cacos, minus_infty, -100, M_PIl, plus_infty),
+
+    TEST_c_c (cacos, plus_infty, 0, 0.0, minus_infty),
+    TEST_c_c (cacos, plus_infty, minus_zero, 0.0, plus_infty),
+    TEST_c_c (cacos, plus_infty, 0.5, 0.0, minus_infty),
+    TEST_c_c (cacos, plus_infty, -0.5, 0.0, plus_infty),
+
+    TEST_c_c (cacos, plus_infty, qnan_value, qnan_value, plus_infty, IGNORE_ZERO_INF_SIGN),
+    TEST_c_c (cacos, minus_infty, qnan_value, qnan_value, plus_infty, IGNORE_ZERO_INF_SIGN),
+
+    TEST_c_c (cacos, 0, qnan_value, M_PI_2l, qnan_value),
+    TEST_c_c (cacos, minus_zero, qnan_value, M_PI_2l, qnan_value),
+
+    TEST_c_c (cacos, qnan_value, plus_infty, qnan_value, minus_infty),
+    TEST_c_c (cacos, qnan_value, minus_infty, qnan_value, plus_infty),
+
+    TEST_c_c (cacos, 10.5, qnan_value, qnan_value, qnan_value, INVALID_EXCEPTION_OK),
+    TEST_c_c (cacos, -10.5, qnan_value, qnan_value, qnan_value, INVALID_EXCEPTION_OK),
+
+    TEST_c_c (cacos, qnan_value, 0.75, qnan_value, qnan_value, INVALID_EXCEPTION_OK),
+    TEST_c_c (cacos, qnan_value, -0.75, qnan_value, qnan_value, INVALID_EXCEPTION_OK),
+
+    TEST_c_c (cacos, qnan_value, qnan_value, qnan_value, qnan_value),
+
+    TEST_c_c (cacos, plus_zero, -1.5L, M_PI_2l, 1.194763217287109304111930828519090523536L),
+    TEST_c_c (cacos, minus_zero, -1.5L, M_PI_2l, 1.194763217287109304111930828519090523536L),
+    TEST_c_c (cacos, plus_zero, -1.0L, M_PI_2l, 0.8813735870195430252326093249797923090282L),
+    TEST_c_c (cacos, minus_zero, -1.0L, M_PI_2l, 0.8813735870195430252326093249797923090282L),
+    TEST_c_c (cacos, plus_zero, -0.5L, M_PI_2l, 0.4812118250596034474977589134243684231352L),
+    TEST_c_c (cacos, minus_zero, -0.5L, M_PI_2l, 0.4812118250596034474977589134243684231352L),
+    TEST_c_c (cacos, plus_zero, 0.5L, M_PI_2l, -0.4812118250596034474977589134243684231352L),
+    TEST_c_c (cacos, minus_zero, 0.5L, M_PI_2l, -0.4812118250596034474977589134243684231352L),
+    TEST_c_c (cacos, plus_zero, 1.0L, M_PI_2l, -0.8813735870195430252326093249797923090282L),
+    TEST_c_c (cacos, minus_zero, 1.0L, M_PI_2l, -0.8813735870195430252326093249797923090282L),
+    TEST_c_c (cacos, plus_zero, 1.5L, M_PI_2l, -1.194763217287109304111930828519090523536L),
+    TEST_c_c (cacos, minus_zero, 1.5L, M_PI_2l, -1.194763217287109304111930828519090523536L),
+
+    TEST_c_c (cacos, -1.5L, plus_zero, M_PIl, -0.9624236501192068949955178268487368462704L),
+    TEST_c_c (cacos, -1.5L, minus_zero, M_PIl, 0.9624236501192068949955178268487368462704L),
+    TEST_c_c (cacos, -1.0L, plus_zero, M_PIl, minus_zero),
+    TEST_c_c (cacos, -1.0L, minus_zero, M_PIl, plus_zero),
+    TEST_c_c (cacos, -0.5L, plus_zero, 2.094395102393195492308428922186335256131L, minus_zero),
+    TEST_c_c (cacos, -0.5L, minus_zero, 2.094395102393195492308428922186335256131L, plus_zero),
+    TEST_c_c (cacos, 0.5L, plus_zero, 1.047197551196597746154214461093167628066L, minus_zero),
+    TEST_c_c (cacos, 0.5L, minus_zero, 1.047197551196597746154214461093167628066L, plus_zero),
+    TEST_c_c (cacos, 1.0L, plus_zero, plus_zero, minus_zero),
+    TEST_c_c (cacos, 1.0L, minus_zero, plus_zero, plus_zero),
+    TEST_c_c (cacos, 1.5L, plus_zero, plus_zero, -0.9624236501192068949955178268487368462704L),
+    TEST_c_c (cacos, 1.5L, minus_zero, plus_zero, 0.9624236501192068949955178268487368462704L),
+
+    TEST_c_c (cacos, 0x1p50L, 1.0L, 8.881784197001252323389053344727730248720e-16L, -3.535050620855721078027883819436720218708e1L),
+    TEST_c_c (cacos, 0x1p50L, -1.0L, 8.881784197001252323389053344727730248720e-16L, 3.535050620855721078027883819436720218708e1L),
+    TEST_c_c (cacos, -0x1p50L, 1.0L, 3.141592653589792350284223683154270545292L, -3.535050620855721078027883819436720218708e1L),
+    TEST_c_c (cacos, -0x1p50L, -1.0L, 3.141592653589792350284223683154270545292L, 3.535050620855721078027883819436720218708e1L),
+    TEST_c_c (cacos, 1.0L, 0x1p50L, 1.570796326794895731052901991514519103193L, -3.535050620855721078027883819436759661753e1L),
+    TEST_c_c (cacos, -1.0L, 0x1p50L, 1.570796326794897507409741391764983781004L, -3.535050620855721078027883819436759661753e1L),
+    TEST_c_c (cacos, 1.0L, -0x1p50L, 1.570796326794895731052901991514519103193L, 3.535050620855721078027883819436759661753e1L),
+    TEST_c_c (cacos, -1.0L, -0x1p50L, 1.570796326794897507409741391764983781004L, 3.535050620855721078027883819436759661753e1L),
+#ifndef TEST_FLOAT
+    TEST_c_c (cacos, 0x1p500L, 1.0L, 3.054936363499604682051979393213617699789e-151L, -3.472667374605326000180332928505464606058e2L),
+    TEST_c_c (cacos, 0x1p500L, -1.0L, 3.054936363499604682051979393213617699789e-151L, 3.472667374605326000180332928505464606058e2L),
+    TEST_c_c (cacos, -0x1p500L, 1.0L, 3.141592653589793238462643383279502884197L, -3.472667374605326000180332928505464606058e2L),
+    TEST_c_c (cacos, -0x1p500L, -1.0L, 3.141592653589793238462643383279502884197L, 3.472667374605326000180332928505464606058e2L),
+    TEST_c_c (cacos, 1.0L, 0x1p500L, 1.570796326794896619231321691639751442099L, -3.472667374605326000180332928505464606058e2L),
+    TEST_c_c (cacos, -1.0L, 0x1p500L, 1.570796326794896619231321691639751442099L, -3.472667374605326000180332928505464606058e2L),
+    TEST_c_c (cacos, 1.0L, -0x1p500L, 1.570796326794896619231321691639751442099L, 3.472667374605326000180332928505464606058e2L),
+    TEST_c_c (cacos, -1.0L, -0x1p500L, 1.570796326794896619231321691639751442099L, 3.472667374605326000180332928505464606058e2L),
+#endif
+#if defined TEST_LDOUBLE && LDBL_MAX_EXP >= 16384
+    TEST_c_c (cacos, 0x1p5000L, 1.0L, 7.079811261048172892385615158694057552948e-1506L, -3.466429049980286492395577839412341016946e3L),
+    TEST_c_c (cacos, 0x1p5000L, -1.0L, 7.079811261048172892385615158694057552948e-1506L, 3.466429049980286492395577839412341016946e3L),
+    TEST_c_c (cacos, -0x1p5000L, 1.0L, 3.141592653589793238462643383279502884197L, -3.466429049980286492395577839412341016946e3L),
+    TEST_c_c (cacos, -0x1p5000L, -1.0L, 3.141592653589793238462643383279502884197L, 3.466429049980286492395577839412341016946e3L),
+    TEST_c_c (cacos, 1.0L, 0x1p5000L, 1.570796326794896619231321691639751442099L, -3.466429049980286492395577839412341016946e3L),
+    TEST_c_c (cacos, -1.0L, 0x1p5000L, 1.570796326794896619231321691639751442099L, -3.466429049980286492395577839412341016946e3L),
+    TEST_c_c (cacos, 1.0L, -0x1p5000L, 1.570796326794896619231321691639751442099L, 3.466429049980286492395577839412341016946e3L),
+    TEST_c_c (cacos, -1.0L, -0x1p5000L, 1.570796326794896619231321691639751442099L, 3.466429049980286492395577839412341016946e3L),
+#endif
+
+    TEST_c_c (cacos, 0x1.fp127L, 0x1.fp127L, 7.853981633974483096156608458198757210493e-1L, -8.973081118419833726837456344608533993585e1L),
+#ifndef TEST_FLOAT
+    TEST_c_c (cacos, 0x1.fp1023L, 0x1.fp1023L, 7.853981633974483096156608458198757210493e-1L, -7.107906849659093345062145442726115449315e2L),
+#endif
+#if defined TEST_LDOUBLE && LDBL_MAX_EXP >= 16384
+    TEST_c_c (cacos, 0x1.fp16383L, 0x1.fp16383L, 7.853981633974483096156608458198757210493e-1L, -1.135753137836666928715489992987020363057e4L),
+#endif
+
+    TEST_c_c (cacos, 0x1.fp-129L, 1.5L, 1.570796326794896619231321691639751442097L, -1.194763217287109304111930828519090523536L),
+    TEST_c_c (cacos, 0x1.fp-129L, -1.5L, 1.570796326794896619231321691639751442097L, 1.194763217287109304111930828519090523536L),
+    TEST_c_c (cacos, -0x1.fp-129L, 1.5L, 1.570796326794896619231321691639751442100L, -1.194763217287109304111930828519090523536L),
+    TEST_c_c (cacos, -0x1.fp-129L, -1.5L, 1.570796326794896619231321691639751442100L, 1.194763217287109304111930828519090523536L),
+    TEST_c_c (cacos, 1.5L, 0x1.fp-129L, 2.546345110742945032959687790021055102355e-39L, -9.624236501192068949955178268487368462704e-1L, UNDERFLOW_EXCEPTION_FLOAT),
+    TEST_c_c (cacos, -1.5L, 0x1.fp-129L, 3.141592653589793238462643383279502884195L, -9.624236501192068949955178268487368462704e-1L),
+    TEST_c_c (cacos, 1.5L, -0x1.fp-129L, 2.546345110742945032959687790021055102355e-39L, 9.624236501192068949955178268487368462704e-1L, UNDERFLOW_EXCEPTION_FLOAT),
+    TEST_c_c (cacos, -1.5L, -0x1.fp-129L, 3.141592653589793238462643383279502884195L, 9.624236501192068949955178268487368462704e-1L),
+#ifndef TEST_FLOAT
+    TEST_c_c (cacos, 0x1.fp-1025L, 1.5L, 1.570796326794896619231321691639751442099L, -1.194763217287109304111930828519090523536L),
+    TEST_c_c (cacos, 0x1.fp-1025L, -1.5L, 1.570796326794896619231321691639751442099L, 1.194763217287109304111930828519090523536L),
+    TEST_c_c (cacos, -0x1.fp-1025L, 1.5L, 1.570796326794896619231321691639751442099L, -1.194763217287109304111930828519090523536L),
+    TEST_c_c (cacos, -0x1.fp-1025L, -1.5L, 1.570796326794896619231321691639751442099L, 1.194763217287109304111930828519090523536L),
+    TEST_c_c (cacos, 1.5L, 0x1.fp-1025L, 4.819934639999230680322935210539402497827e-309L, -9.624236501192068949955178268487368462704e-1L, UNDERFLOW_EXCEPTION_DOUBLE),
+    TEST_c_c (cacos, -1.5L, 0x1.fp-1025L, 3.141592653589793238462643383279502884197L, -9.624236501192068949955178268487368462704e-1L),
+    TEST_c_c (cacos, 1.5L, -0x1.fp-1025L, 4.819934639999230680322935210539402497827e-309L, 9.624236501192068949955178268487368462704e-1L, UNDERFLOW_EXCEPTION_DOUBLE),
+    TEST_c_c (cacos, -1.5L, -0x1.fp-1025L, 3.141592653589793238462643383279502884197L, 9.624236501192068949955178268487368462704e-1L),
+#endif
+#if defined TEST_LDOUBLE && LDBL_MIN_EXP <= -16381
+    TEST_c_c (cacos, 0x1.fp-16385L, 1.5L, 1.570796326794896619231321691639751442099L, -1.194763217287109304111930828519090523536L),
+    TEST_c_c (cacos, 0x1.fp-16385L, -1.5L, 1.570796326794896619231321691639751442099L, 1.194763217287109304111930828519090523536L),
+    TEST_c_c (cacos, -0x1.fp-16385L, 1.5L, 1.570796326794896619231321691639751442099L, -1.194763217287109304111930828519090523536L),
+    TEST_c_c (cacos, -0x1.fp-16385L, -1.5L, 1.570796326794896619231321691639751442099L, 1.194763217287109304111930828519090523536L),
+    TEST_c_c (cacos, 1.5L, 0x1.fp-16385L, 7.282957076134209141226696333885150260319e-4933L, -9.624236501192068949955178268487368462704e-1L, UNDERFLOW_EXCEPTION),
+    TEST_c_c (cacos, -1.5L, 0x1.fp-16385L, 3.141592653589793238462643383279502884197L, -9.624236501192068949955178268487368462704e-1L),
+    TEST_c_c (cacos, 1.5L, -0x1.fp-16385L, 7.282957076134209141226696333885150260319e-4933L, 9.624236501192068949955178268487368462704e-1L, UNDERFLOW_EXCEPTION),
+    TEST_c_c (cacos, -1.5L, -0x1.fp-16385L, 3.141592653589793238462643383279502884197L, 9.624236501192068949955178268487368462704e-1L),
+#endif
+
+    TEST_c_c (cacos, 0.5L, 1.0L, 1.221357263937683325603909865564381489366L, -9.261330313501824245501244453057873152694e-1L),
+    TEST_c_c (cacos, 0.5L, -1.0L, 1.221357263937683325603909865564381489366L, 9.261330313501824245501244453057873152694e-1L),
+    TEST_c_c (cacos, -0.5L, 1.0L, 1.920235389652109912858733517715121394831L, -9.261330313501824245501244453057873152694e-1L),
+    TEST_c_c (cacos, -0.5L, -1.0L, 1.920235389652109912858733517715121394831L, 9.261330313501824245501244453057873152694e-1L),
+    TEST_c_c (cacos, 1.0L, 0.5L, 6.748888455860063801646649673121744318756e-1L, -7.328576759736452608886724437653071523305e-1L),
+    TEST_c_c (cacos, -1.0L, 0.5L, 2.466703808003786858297978415967328452322L, -7.328576759736452608886724437653071523305e-1L),
+    TEST_c_c (cacos, 1.0L, -0.5L, 6.748888455860063801646649673121744318756e-1L, 7.328576759736452608886724437653071523305e-1L),
+    TEST_c_c (cacos, -1.0L, -0.5L, 2.466703808003786858297978415967328452322L, 7.328576759736452608886724437653071523305e-1L),
+    TEST_c_c (cacos, 0.25L, 1.0L, 1.394493894017929688812643125003661339452L, -8.924633639033482359562124741744951972772e-1L),
+    TEST_c_c (cacos, 0.25L, -1.0L, 1.394493894017929688812643125003661339452L, 8.924633639033482359562124741744951972772e-1L),
+    TEST_c_c (cacos, -0.25L, 1.0L, 1.747098759571863549650000258275841544745L, -8.924633639033482359562124741744951972772e-1L),
+    TEST_c_c (cacos, -0.25L, -1.0L, 1.747098759571863549650000258275841544745L, 8.924633639033482359562124741744951972772e-1L),
+    TEST_c_c (cacos, 1.0L, 0.25L, 4.890443302710802929202843732146540079124e-1L, -5.097911466811016354623559941115413499164e-1L),
+    TEST_c_c (cacos, -1.0L, 0.25L, 2.652548323318712945542359010064848876285L, -5.097911466811016354623559941115413499164e-1L),
+    TEST_c_c (cacos, 1.0L, -0.25L, 4.890443302710802929202843732146540079124e-1L, 5.097911466811016354623559941115413499164e-1L),
+    TEST_c_c (cacos, -1.0L, -0.25L, 2.652548323318712945542359010064848876285L, 5.097911466811016354623559941115413499164e-1L),
+    TEST_c_c (cacos, 0x1.fp-10L, 1.0L, 1.569458417435338878318763342108699202986L, -8.813742198809567991336704287826445879025e-1L),
+    TEST_c_c (cacos, 0x1.fp-10L, -1.0L, 1.569458417435338878318763342108699202986L, 8.813742198809567991336704287826445879025e-1L),
+    TEST_c_c (cacos, -0x1.fp-10L, 1.0L, 1.572134236154454360143880041170803681211L, -8.813742198809567991336704287826445879025e-1L),
+    TEST_c_c (cacos, -0x1.fp-10L, -1.0L, 1.572134236154454360143880041170803681211L, 8.813742198809567991336704287826445879025e-1L),
+    TEST_c_c (cacos, 1.0L, 0x1.fp-10L, 4.349129763101882771258049954181971959031e-2L, -4.350501469856803800217957402220976497152e-2L),
+    TEST_c_c (cacos, -1.0L, 0x1.fp-10L, 3.098101355958774410750062883737683164607L, -4.350501469856803800217957402220976497152e-2L),
+    TEST_c_c (cacos, 1.0L, -0x1.fp-10L, 4.349129763101882771258049954181971959031e-2L, 4.350501469856803800217957402220976497152e-2L),
+    TEST_c_c (cacos, -1.0L, -0x1.fp-10L, 3.098101355958774410750062883737683164607L, 4.350501469856803800217957402220976497152e-2L),
+    TEST_c_c (cacos, 0x1.fp-30L, 1.0L, 1.570796325518966635014803151387033957091L, -8.813735870195430258081932989769495326854e-1L),
+    TEST_c_c (cacos, 0x1.fp-30L, -1.0L, 1.570796325518966635014803151387033957091L, 8.813735870195430258081932989769495326854e-1L),
+    TEST_c_c (cacos, -0x1.fp-30L, 1.0L, 1.570796328070826603447840231892468927106L, -8.813735870195430258081932989769495326854e-1L),
+    TEST_c_c (cacos, -0x1.fp-30L, -1.0L, 1.570796328070826603447840231892468927106L, 8.813735870195430258081932989769495326854e-1L),
+    TEST_c_c (cacos, 1.0L, 0x1.fp-30L, 4.247867097467650115899790787875186617316e-5L, -4.247867098745151888768727039216644758847e-5L),
+    TEST_c_c (cacos, -1.0L, 0x1.fp-30L, 3.141550174918818561961484385371624132331L, -4.247867098745151888768727039216644758847e-5L),
+    TEST_c_c (cacos, 1.0L, -0x1.fp-30L, 4.247867097467650115899790787875186617316e-5L, 4.247867098745151888768727039216644758847e-5L),
+    TEST_c_c (cacos, -1.0L, -0x1.fp-30L, 3.141550174918818561961484385371624132331L, 4.247867098745151888768727039216644758847e-5L),
+    TEST_c_c (cacos, 0x1.fp-100L, 1.0L, 1.570796326794896619231321691638670687364L, -8.813735870195430252326093249797923090282e-1L),
+    TEST_c_c (cacos, 0x1.fp-100L, -1.0L, 1.570796326794896619231321691638670687364L, 8.813735870195430252326093249797923090282e-1L),
+    TEST_c_c (cacos, -0x1.fp-100L, 1.0L, 1.570796326794896619231321691640832196834L, -8.813735870195430252326093249797923090282e-1L),
+    TEST_c_c (cacos, -0x1.fp-100L, -1.0L, 1.570796326794896619231321691640832196834L, 8.813735870195430252326093249797923090282e-1L),
+    TEST_c_c (cacos, 1.0L, 0x1.fp-100L, 1.236292038260260888664514866456887257525e-15L, -1.236292038260260888664514866457202186027e-15L),
+    TEST_c_c (cacos, -1.0L, 0x1.fp-100L, 3.141592653589792002170605123018614219682L, -1.236292038260260888664514866457202186027e-15L),
+    TEST_c_c (cacos, 1.0L, -0x1.fp-100L, 1.236292038260260888664514866456887257525e-15L, 1.236292038260260888664514866457202186027e-15L),
+    TEST_c_c (cacos, -1.0L, -0x1.fp-100L, 3.141592653589792002170605123018614219682L, 1.236292038260260888664514866457202186027e-15L),
+    TEST_c_c (cacos, 0x1.fp-129L, 1.0L, 1.570796326794896619231321691639751442097L, -8.813735870195430252326093249797923090282e-1L),
+    TEST_c_c (cacos, 0x1.fp-129L, -1.0L, 1.570796326794896619231321691639751442097L, 8.813735870195430252326093249797923090282e-1L),
+    TEST_c_c (cacos, -0x1.fp-129L, 1.0L, 1.570796326794896619231321691639751442101L, -8.813735870195430252326093249797923090282e-1L),
+    TEST_c_c (cacos, -0x1.fp-129L, -1.0L, 1.570796326794896619231321691639751442101L, 8.813735870195430252326093249797923090282e-1L),
+    TEST_c_c (cacos, 1.0L, 0x1.fp-129L, 5.335635276982233498398987585285818977930e-20L, -5.335635276982233498398987585285818977933e-20L),
+    TEST_c_c (cacos, -1.0L, 0x1.fp-129L, 3.141592653589793238409287030509680549213L, -5.335635276982233498398987585285818977933e-20L),
+    TEST_c_c (cacos, 1.0L, -0x1.fp-129L, 5.335635276982233498398987585285818977930e-20L, 5.335635276982233498398987585285818977933e-20L),
+    TEST_c_c (cacos, -1.0L, -0x1.fp-129L, 3.141592653589793238409287030509680549213L, 5.335635276982233498398987585285818977933e-20L),
+#ifndef TEST_FLOAT
+    TEST_c_c (cacos, 0x1.fp-1000L, 1.0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249797923090282e-1L),
+    TEST_c_c (cacos, 0x1.fp-1000L, -1.0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249797923090282e-1L),
+    TEST_c_c (cacos, -0x1.fp-1000L, 1.0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249797923090282e-1L),
+    TEST_c_c (cacos, -0x1.fp-1000L, -1.0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249797923090282e-1L),
+    TEST_c_c (cacos, 1.0L, 0x1.fp-1000L, 4.252291453851660175550490409247739011867e-151L, -4.252291453851660175550490409247739011867e-151L),
+    TEST_c_c (cacos, -1.0L, 0x1.fp-1000L, 3.141592653589793238462643383279502884197L, -4.252291453851660175550490409247739011867e-151L),
+    TEST_c_c (cacos, 1.0L, -0x1.fp-1000L, 4.252291453851660175550490409247739011867e-151L, 4.252291453851660175550490409247739011867e-151L),
+    TEST_c_c (cacos, -1.0L, -0x1.fp-1000L, 3.141592653589793238462643383279502884197L, 4.252291453851660175550490409247739011867e-151L),
+    TEST_c_c (cacos, 0x1.fp-1025L, 1.0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249797923090282e-1L),
+    TEST_c_c (cacos, 0x1.fp-1025L, -1.0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249797923090282e-1L),
+    TEST_c_c (cacos, -0x1.fp-1025L, 1.0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249797923090282e-1L),
+    TEST_c_c (cacos, -0x1.fp-1025L, -1.0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249797923090282e-1L),
+    TEST_c_c (cacos, 1.0L, 0x1.fp-1025L, 7.340879205566679497036857179189356754017e-155L, -7.340879205566679497036857179189356754017e-155L),
+    TEST_c_c (cacos, -1.0L, 0x1.fp-1025L, 3.141592653589793238462643383279502884197L, -7.340879205566679497036857179189356754017e-155L),
+    TEST_c_c (cacos, 1.0L, -0x1.fp-1025L, 7.340879205566679497036857179189356754017e-155L, 7.340879205566679497036857179189356754017e-155L),
+    TEST_c_c (cacos, -1.0L, -0x1.fp-1025L, 3.141592653589793238462643383279502884197L, 7.340879205566679497036857179189356754017e-155L),
+#endif
+#if defined TEST_LDOUBLE && LDBL_MIN_EXP <= -16381
+    TEST_c_c (cacos, 0x1.fp-10000L, 1.0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249797923090282e-1L),
+    TEST_c_c (cacos, 0x1.fp-10000L, -1.0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249797923090282e-1L),
+    TEST_c_c (cacos, -0x1.fp-10000L, 1.0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249797923090282e-1L),
+    TEST_c_c (cacos, -0x1.fp-10000L, -1.0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249797923090282e-1L),
+    TEST_c_c (cacos, 1.0L, 0x1.fp-10000L, 9.854680208706673586644342922051388714633e-1506L, -9.854680208706673586644342922051388714633e-1506L),
+    TEST_c_c (cacos, -1.0L, 0x1.fp-10000L, 3.141592653589793238462643383279502884197L, -9.854680208706673586644342922051388714633e-1506L),
+    TEST_c_c (cacos, 1.0L, -0x1.fp-10000L, 9.854680208706673586644342922051388714633e-1506L, 9.854680208706673586644342922051388714633e-1506L),
+    TEST_c_c (cacos, -1.0L, -0x1.fp-10000L, 3.141592653589793238462643383279502884197L, 9.854680208706673586644342922051388714633e-1506L),
+    TEST_c_c (cacos, 0x1.fp-16385L, 1.0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249797923090282e-1L),
+    TEST_c_c (cacos, 0x1.fp-16385L, -1.0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249797923090282e-1L),
+    TEST_c_c (cacos, -0x1.fp-16385L, 1.0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249797923090282e-1L),
+    TEST_c_c (cacos, -0x1.fp-16385L, -1.0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249797923090282e-1L),
+    TEST_c_c (cacos, 1.0L, 0x1.fp-16385L, 9.023632056840860275214893047597614177639e-2467L, -9.023632056840860275214893047597614177639e-2467L),
+    TEST_c_c (cacos, -1.0L, 0x1.fp-16385L, 3.141592653589793238462643383279502884197L, -9.023632056840860275214893047597614177639e-2467L),
+    TEST_c_c (cacos, 1.0L, -0x1.fp-16385L, 9.023632056840860275214893047597614177639e-2467L, 9.023632056840860275214893047597614177639e-2467L),
+    TEST_c_c (cacos, -1.0L, -0x1.fp-16385L, 3.141592653589793238462643383279502884197L, 9.023632056840860275214893047597614177639e-2467L),
+#endif
+
+    TEST_c_c (cacos, 0x1p-23L, 0x1.000002p0L, 1.570796242501204621739026081991856762292L, -8.813736713132400470205730751186547909968e-1L),
+    TEST_c_c (cacos, 0x1p-23L, -0x1.000002p0L, 1.570796242501204621739026081991856762292L, 8.813736713132400470205730751186547909968e-1L),
+    TEST_c_c (cacos, -0x1p-23L, 0x1.000002p0L, 1.570796411088588616723617301287646121905L, -8.813736713132400470205730751186547909968e-1L),
+    TEST_c_c (cacos, -0x1p-23L, -0x1.000002p0L, 1.570796411088588616723617301287646121905L, 8.813736713132400470205730751186547909968e-1L),
+    TEST_c_c (cacos, 0x1.000002p0L, 0x1p-23L, 2.222118384408546368406374049167636760903e-4L, -5.364668491573609633134147164031476452679e-4L),
+    TEST_c_c (cacos, -0x1.000002p0L, 0x1p-23L, 3.141370441751352383825802745874586120521L, -5.364668491573609633134147164031476452679e-4L),
+    TEST_c_c (cacos, 0x1.000002p0L, -0x1p-23L, 2.222118384408546368406374049167636760903e-4L, 5.364668491573609633134147164031476452679e-4L),
+    TEST_c_c (cacos, -0x1.000002p0L, -0x1p-23L, 3.141370441751352383825802745874586120521L, 5.364668491573609633134147164031476452679e-4L),
+    TEST_c_c (cacos, 0x1.fp-129L, 0x1.000002p0L, 1.570796326794896619231321691639751442097L, -8.813736713132375348727889167749389235161e-1L),
+    TEST_c_c (cacos, 0x1.fp-129L, -0x1.000002p0L, 1.570796326794896619231321691639751442097L, 8.813736713132375348727889167749389235161e-1L),
+    TEST_c_c (cacos, -0x1.fp-129L, 0x1.000002p0L, 1.570796326794896619231321691639751442101L, -8.813736713132375348727889167749389235161e-1L),
+    TEST_c_c (cacos, -0x1.fp-129L, -0x1.000002p0L, 1.570796326794896619231321691639751442101L, 8.813736713132375348727889167749389235161e-1L),
+    TEST_c_c (cacos, 0x1.000002p0L, 0x1.fp-129L, 5.830451806317544230969669308596361881467e-36L, -4.882812451493617206486388134172712975070e-4L),
+    TEST_c_c (cacos, -0x1.000002p0L, 0x1.fp-129L, 3.141592653589793238462643383279502878367L, -4.882812451493617206486388134172712975070e-4L),
+    TEST_c_c (cacos, 0x1.000002p0L, -0x1.fp-129L, 5.830451806317544230969669308596361881467e-36L, 4.882812451493617206486388134172712975070e-4L),
+    TEST_c_c (cacos, -0x1.000002p0L, -0x1.fp-129L, 3.141592653589793238462643383279502878367L, 4.882812451493617206486388134172712975070e-4L),
+    TEST_c_c (cacos, 0.0L, 0x1.000002p0L, 1.570796326794896619231321691639751442099L, -8.813736713132375348727889167749389235161e-1L),
+    TEST_c_c (cacos, 0.0L, -0x1.000002p0L, 1.570796326794896619231321691639751442099L, 8.813736713132375348727889167749389235161e-1L),
+    TEST_c_c (cacos, -0.0L, 0x1.000002p0L, 1.570796326794896619231321691639751442099L, -8.813736713132375348727889167749389235161e-1L),
+    TEST_c_c (cacos, -0.0L, -0x1.000002p0L, 1.570796326794896619231321691639751442099L, 8.813736713132375348727889167749389235161e-1L),
+    TEST_c_c (cacos, 0x1.000002p0L, 0.0L, 0.0L, -4.882812451493617206486388134172712975070e-4L),
+    TEST_c_c (cacos, -0x1.000002p0L, 0.0L, 3.141592653589793238462643383279502884197L, -4.882812451493617206486388134172712975070e-4L),
+    TEST_c_c (cacos, 0x1.000002p0L, -0.0L, 0.0L, 4.882812451493617206486388134172712975070e-4L),
+    TEST_c_c (cacos, -0x1.000002p0L, -0.0L, 3.141592653589793238462643383279502884197L, 4.882812451493617206486388134172712975070e-4L),
+#ifndef TEST_FLOAT
+    TEST_c_c (cacos, 0x1p-52L, 0x1.0000000000001p0L, 1.570796326794896462222075823262262934288L, -8.813735870195431822418551933572982483664e-1L),
+    TEST_c_c (cacos, 0x1p-52L, -0x1.0000000000001p0L, 1.570796326794896462222075823262262934288L, 8.813735870195431822418551933572982483664e-1L),
+    TEST_c_c (cacos, -0x1p-52L, 0x1.0000000000001p0L, 1.570796326794896776240567560017239949909L, -8.813735870195431822418551933572982483664e-1L),
+    TEST_c_c (cacos, -0x1p-52L, -0x1.0000000000001p0L, 1.570796326794896776240567560017239949909L, 8.813735870195431822418551933572982483664e-1L),
+    TEST_c_c (cacos, 0x1.0000000000001p0L, 0x1p-52L, 9.590301705980041385828904092662391018164e-9L, -2.315303644582684770975188768022139415020e-8L),
+    TEST_c_c (cacos, -0x1.0000000000001p0L, 0x1p-52L, 3.141592643999491532482601997450598791535L, -2.315303644582684770975188768022139415020e-8L),
+    TEST_c_c (cacos, 0x1.0000000000001p0L, -0x1p-52L, 9.590301705980041385828904092662391018164e-9L, 2.315303644582684770975188768022139415020e-8L),
+    TEST_c_c (cacos, -0x1.0000000000001p0L, -0x1p-52L, 3.141592643999491532482601997450598791535L, 2.315303644582684770975188768022139415020e-8L),
+    TEST_c_c (cacos, 0x1.fp-1025L, 0x1.0000000000001p0L, 1.570796326794896619231321691639751442099L, -8.813735870195431822418551933572895326024e-1L),
+    TEST_c_c (cacos, 0x1.fp-1025L, -0x1.0000000000001p0L, 1.570796326794896619231321691639751442099L, 8.813735870195431822418551933572895326024e-1L),
+    TEST_c_c (cacos, -0x1.fp-1025L, 0x1.0000000000001p0L, 1.570796326794896619231321691639751442099L, -8.813735870195431822418551933572895326024e-1L),
+    TEST_c_c (cacos, -0x1.fp-1025L, -0x1.0000000000001p0L, 1.570796326794896619231321691639751442099L, 8.813735870195431822418551933572895326024e-1L),
+    TEST_c_c (cacos, 0x1.0000000000001p0L, 0x1.fp-1025L, 2.557178503953494342609835913586108008322e-301L, -2.107342425544701550354780375182800088393e-8L, UNDERFLOW_EXCEPTION_LDOUBLE_IBM),
+    TEST_c_c (cacos, -0x1.0000000000001p0L, 0x1.fp-1025L, 3.141592653589793238462643383279502884197L, -2.107342425544701550354780375182800088393e-8L),
+    TEST_c_c (cacos, 0x1.0000000000001p0L, -0x1.fp-1025L, 2.557178503953494342609835913586108008322e-301L, 2.107342425544701550354780375182800088393e-8L, UNDERFLOW_EXCEPTION_LDOUBLE_IBM),
+    TEST_c_c (cacos, -0x1.0000000000001p0L, -0x1.fp-1025L, 3.141592653589793238462643383279502884197L, 2.107342425544701550354780375182800088393e-8L),
+    TEST_c_c (cacos, 0.0L, 0x1.0000000000001p0L, 1.570796326794896619231321691639751442099L, -8.813735870195431822418551933572895326024e-1L),
+    TEST_c_c (cacos, 0.0L, -0x1.0000000000001p0L, 1.570796326794896619231321691639751442099L, 8.813735870195431822418551933572895326024e-1L),
+    TEST_c_c (cacos, -0.0L, 0x1.0000000000001p0L, 1.570796326794896619231321691639751442099L, -8.813735870195431822418551933572895326024e-1L),
+    TEST_c_c (cacos, -0.0L, -0x1.0000000000001p0L, 1.570796326794896619231321691639751442099L, 8.813735870195431822418551933572895326024e-1L),
+    TEST_c_c (cacos, 0x1.0000000000001p0L, 0.0L, 0.0L, -2.107342425544701550354780375182800088393e-8L),
+    TEST_c_c (cacos, -0x1.0000000000001p0L, 0.0L, 3.141592653589793238462643383279502884197L, -2.107342425544701550354780375182800088393e-8L),
+    TEST_c_c (cacos, 0x1.0000000000001p0L, -0.0L, 0.0L, 2.107342425544701550354780375182800088393e-8L),
+    TEST_c_c (cacos, -0x1.0000000000001p0L, -0.0L, 3.141592653589793238462643383279502884197L, 2.107342425544701550354780375182800088393e-8L),
+#endif
+#if defined TEST_LDOUBLE && LDBL_MANT_DIG >= 64
+    TEST_c_c (cacos, 0x1p-63L, 0x1.0000000000000002p0L, 1.570796326794896619154657020805582738031L, -8.813735870195430253092739958139610131001e-1L),
+    TEST_c_c (cacos, 0x1p-63L, -0x1.0000000000000002p0L, 1.570796326794896619154657020805582738031L, 8.813735870195430253092739958139610131001e-1L),
+    TEST_c_c (cacos, -0x1p-63L, 0x1.0000000000000002p0L, 1.570796326794896619307986362473920146166L, -8.813735870195430253092739958139610131001e-1L),
+    TEST_c_c (cacos, -0x1p-63L, -0x1.0000000000000002p0L, 1.570796326794896619307986362473920146166L, 8.813735870195430253092739958139610131001e-1L),
+    TEST_c_c (cacos, 0x1.0000000000000002p0L, 0x1p-63L, 2.119177303101063432592523199680782317447e-10L, -5.116146586219826555037807251857670783420e-10L),
+    TEST_c_c (cacos, -0x1.0000000000000002p0L, 0x1p-63L, 3.141592653377875508152537040020250564229L, -5.116146586219826555037807251857670783420e-10L),
+    TEST_c_c (cacos, 0x1.0000000000000002p0L, -0x1p-63L, 2.119177303101063432592523199680782317447e-10L, 5.116146586219826555037807251857670783420e-10L),
+    TEST_c_c (cacos, -0x1.0000000000000002p0L, -0x1p-63L, 3.141592653377875508152537040020250564229L, 5.116146586219826555037807251857670783420e-10L),
+# if LDBL_MIN_EXP <= -16381
+    TEST_c_c (cacos, 0x1.fp-16385L, 0x1.0000000000000002p0L, 1.570796326794896619231321691639751442099L, -8.813735870195430253092739958139610130980e-1L),
+    TEST_c_c (cacos, 0x1.fp-16385L, -0x1.0000000000000002p0L, 1.570796326794896619231321691639751442099L, 8.813735870195430253092739958139610130980e-1L),
+    TEST_c_c (cacos, -0x1.fp-16385L, 0x1.0000000000000002p0L, 1.570796326794896619231321691639751442099L, -8.813735870195430253092739958139610130980e-1L),
+    TEST_c_c (cacos, -0x1.fp-16385L, -0x1.0000000000000002p0L, 1.570796326794896619231321691639751442099L, 8.813735870195430253092739958139610130980e-1L),
+    TEST_c_c (cacos, 0x1.0000000000000002p0L, 0x1.fp-16385L, 1.748608650034385653922359120438227480943e-4923L, -4.656612873077392578082927418388212703712e-10L),
+    TEST_c_c (cacos, -0x1.0000000000000002p0L, 0x1.fp-16385L, 3.141592653589793238462643383279502884197L, -4.656612873077392578082927418388212703712e-10L),
+    TEST_c_c (cacos, 0x1.0000000000000002p0L, -0x1.fp-16385L, 1.748608650034385653922359120438227480943e-4923L, 4.656612873077392578082927418388212703712e-10L),
+    TEST_c_c (cacos, -0x1.0000000000000002p0L, -0x1.fp-16385L, 3.141592653589793238462643383279502884197L, 4.656612873077392578082927418388212703712e-10L),
+# endif
+    TEST_c_c (cacos, 0.0L, 0x1.0000000000000002p0L, 1.570796326794896619231321691639751442099L, -8.813735870195430253092739958139610130980e-1L),
+    TEST_c_c (cacos, 0.0L, -0x1.0000000000000002p0L, 1.570796326794896619231321691639751442099L, 8.813735870195430253092739958139610130980e-1L),
+    TEST_c_c (cacos, -0.0L, 0x1.0000000000000002p0L, 1.570796326794896619231321691639751442099L, -8.813735870195430253092739958139610130980e-1L),
+    TEST_c_c (cacos, -0.0L, -0x1.0000000000000002p0L, 1.570796326794896619231321691639751442099L, 8.813735870195430253092739958139610130980e-1L),
+    TEST_c_c (cacos, 0x1.0000000000000002p0L, 0.0L, 0.0L, -4.656612873077392578082927418388212703712e-10L),
+    TEST_c_c (cacos, -0x1.0000000000000002p0L, 0.0L, 3.141592653589793238462643383279502884197L, -4.656612873077392578082927418388212703712e-10L),
+    TEST_c_c (cacos, 0x1.0000000000000002p0L, -0.0L, 0.0L, 4.656612873077392578082927418388212703712e-10L),
+    TEST_c_c (cacos, -0x1.0000000000000002p0L, -0.0L, 3.141592653589793238462643383279502884197L, 4.656612873077392578082927418388212703712e-10L),
+#endif
+#if defined TEST_LDOUBLE && LDBL_MANT_DIG >= 106
+    TEST_c_c (cacos, 0x1p-106L, 0x1.000000000000000000000000008p0L, 1.570796326794896619231321691639742726335L, -8.813735870195430252326093249798097405561e-1L),
+    TEST_c_c (cacos, 0x1p-106L, -0x1.000000000000000000000000008p0L, 1.570796326794896619231321691639742726335L, 8.813735870195430252326093249798097405561e-1L),
+    TEST_c_c (cacos, -0x1p-106L, 0x1.000000000000000000000000008p0L, 1.570796326794896619231321691639760157863L, -8.813735870195430252326093249798097405561e-1L),
+    TEST_c_c (cacos, -0x1p-106L, -0x1.000000000000000000000000008p0L, 1.570796326794896619231321691639760157863L, 8.813735870195430252326093249798097405561e-1L),
+    TEST_c_c (cacos, 0x1.000000000000000000000000008p0L, 0x1p-106L, 5.394221422390606848017034778914096659726e-17L, -2.285028863093221674154232933662774454211e-16L),
+    TEST_c_c (cacos, -0x1.000000000000000000000000008p0L, 0x1p-106L, 3.141592653589793184520429159373434404027L, -2.285028863093221674154232933662774454211e-16L),
+    TEST_c_c (cacos, 0x1.000000000000000000000000008p0L, -0x1p-106L, 5.394221422390606848017034778914096659726e-17L, 2.285028863093221674154232933662774454211e-16L),
+    TEST_c_c (cacos, -0x1.000000000000000000000000008p0L, -0x1p-106L, 3.141592653589793184520429159373434404027L, 2.285028863093221674154232933662774454211e-16L),
+    TEST_c_c (cacos, 0x1.fp-1025L, 0x1.000000000000000000000000008p0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249798097405561e-1L),
+    TEST_c_c (cacos, 0x1.fp-1025L, -0x1.000000000000000000000000008p0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249798097405561e-1L),
+    TEST_c_c (cacos, -0x1.fp-1025L, 0x1.000000000000000000000000008p0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249798097405561e-1L),
+    TEST_c_c (cacos, -0x1.fp-1025L, -0x1.000000000000000000000000008p0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249798097405561e-1L),
+    TEST_c_c (cacos, 0x1.000000000000000000000000008p0L, 0x1.fp-1025L, 2.426922623448365473354662093431821897807e-293L, -2.220446049250313080847263336181636063482e-16L),
+    TEST_c_c (cacos, -0x1.000000000000000000000000008p0L, 0x1.fp-1025L, 3.141592653589793238462643383279502884197L, -2.220446049250313080847263336181636063482e-16L),
+    TEST_c_c (cacos, 0x1.000000000000000000000000008p0L, -0x1.fp-1025L, 2.426922623448365473354662093431821897807e-293L, 2.220446049250313080847263336181636063482e-16L),
+    TEST_c_c (cacos, -0x1.000000000000000000000000008p0L, -0x1.fp-1025L, 3.141592653589793238462643383279502884197L, 2.220446049250313080847263336181636063482e-16L),
+    TEST_c_c (cacos, 0.0L, 0x1.000000000000000000000000008p0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249798097405561e-1L),
+    TEST_c_c (cacos, 0.0L, -0x1.000000000000000000000000008p0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249798097405561e-1L),
+    TEST_c_c (cacos, -0.0L, 0x1.000000000000000000000000008p0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249798097405561e-1L),
+    TEST_c_c (cacos, -0.0L, -0x1.000000000000000000000000008p0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249798097405561e-1L),
+    TEST_c_c (cacos, 0x1.000000000000000000000000008p0L, 0.0L, 0.0L, -2.220446049250313080847263336181636063482e-16L),
+    TEST_c_c (cacos, -0x1.000000000000000000000000008p0L, 0.0L, 3.141592653589793238462643383279502884197L, -2.220446049250313080847263336181636063482e-16L),
+    TEST_c_c (cacos, 0x1.000000000000000000000000008p0L, -0.0L, 0.0L, 2.220446049250313080847263336181636063482e-16L),
+    TEST_c_c (cacos, -0x1.000000000000000000000000008p0L, -0.0L, 3.141592653589793238462643383279502884197L, 2.220446049250313080847263336181636063482e-16L),
+#endif
+#if defined TEST_LDOUBLE && LDBL_MANT_DIG >= 113
+    TEST_c_c (cacos, 0x1p-113L, 0x1.0000000000000000000000000001p0L, 1.570796326794896619231321691639751374007L, -8.813735870195430252326093249797924452120e-1L),
+    TEST_c_c (cacos, 0x1p-113L, -0x1.0000000000000000000000000001p0L, 1.570796326794896619231321691639751374007L, 8.813735870195430252326093249797924452120e-1L),
+    TEST_c_c (cacos, -0x1p-113L, 0x1.0000000000000000000000000001p0L, 1.570796326794896619231321691639751510190L, -8.813735870195430252326093249797924452120e-1L),
+    TEST_c_c (cacos, -0x1p-113L, -0x1.0000000000000000000000000001p0L, 1.570796326794896619231321691639751510190L, 8.813735870195430252326093249797924452120e-1L),
+    TEST_c_c (cacos, 0x1.0000000000000000000000000001p0L, 0x1p-113L, 4.767863183742677481693563511435642755521e-18L, -2.019699255375255198156433710951064632386e-17L),
+    TEST_c_c (cacos, -0x1.0000000000000000000000000001p0L, 0x1p-113L, 3.141592653589793233694780199536825402504L, -2.019699255375255198156433710951064632386e-17L),
+    TEST_c_c (cacos, 0x1.0000000000000000000000000001p0L, -0x1p-113L, 4.767863183742677481693563511435642755521e-18L, 2.019699255375255198156433710951064632386e-17L),
+    TEST_c_c (cacos, -0x1.0000000000000000000000000001p0L, -0x1p-113L, 3.141592653589793233694780199536825402504L, 2.019699255375255198156433710951064632386e-17L),
+    TEST_c_c (cacos, 0x1.fp-16385L, 0x1.0000000000000000000000000001p0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249797924452120e-1L),
+    TEST_c_c (cacos, 0x1.fp-16385L, -0x1.0000000000000000000000000001p0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249797924452120e-1L),
+    TEST_c_c (cacos, -0x1.fp-16385L, 0x1.0000000000000000000000000001p0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249797924452120e-1L),
+    TEST_c_c (cacos, -0x1.fp-16385L, -0x1.0000000000000000000000000001p0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249797924452120e-1L),
+    TEST_c_c (cacos, 0x1.0000000000000000000000000001p0L, 0x1.fp-16385L, 4.148847925325683229178506116378864361396e-4916L, -1.962615573354718824241727964954454332780e-17L),
+    TEST_c_c (cacos, -0x1.0000000000000000000000000001p0L, 0x1.fp-16385L, 3.141592653589793238462643383279502884197L, -1.962615573354718824241727964954454332780e-17L),
+    TEST_c_c (cacos, 0x1.0000000000000000000000000001p0L, -0x1.fp-16385L, 4.148847925325683229178506116378864361396e-4916L, 1.962615573354718824241727964954454332780e-17L),
+    TEST_c_c (cacos, -0x1.0000000000000000000000000001p0L, -0x1.fp-16385L, 3.141592653589793238462643383279502884197L, 1.962615573354718824241727964954454332780e-17L),
+    TEST_c_c (cacos, 0.0L, 0x1.0000000000000000000000000001p0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249797924452120e-1L),
+    TEST_c_c (cacos, 0.0L, -0x1.0000000000000000000000000001p0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249797924452120e-1L),
+    TEST_c_c (cacos, -0.0L, 0x1.0000000000000000000000000001p0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249797924452120e-1L),
+    TEST_c_c (cacos, -0.0L, -0x1.0000000000000000000000000001p0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249797924452120e-1L),
+    TEST_c_c (cacos, 0x1.0000000000000000000000000001p0L, 0.0L, 0.0L, -1.962615573354718824241727964954454332780e-17L),
+    TEST_c_c (cacos, -0x1.0000000000000000000000000001p0L, 0.0L, 3.141592653589793238462643383279502884197L, -1.962615573354718824241727964954454332780e-17L),
+    TEST_c_c (cacos, 0x1.0000000000000000000000000001p0L, -0.0L, 0.0L, 1.962615573354718824241727964954454332780e-17L),
+    TEST_c_c (cacos, -0x1.0000000000000000000000000001p0L, -0.0L, 3.141592653589793238462643383279502884197L, 1.962615573354718824241727964954454332780e-17L),
+#endif
+
+    TEST_c_c (cacos, 0x1p-23L, 0x0.ffffffp0L, 1.570796242501197085295336701632142060969L, -8.813735448726963984495965873956465777250e-1L),
+    TEST_c_c (cacos, 0x1p-23L, -0x0.ffffffp0L, 1.570796242501197085295336701632142060969L, 8.813735448726963984495965873956465777250e-1L),
+    TEST_c_c (cacos, -0x1p-23L, 0x0.ffffffp0L, 1.570796411088596153167306681647360823228L, -8.813735448726963984495965873956465777250e-1L),
+    TEST_c_c (cacos, -0x1p-23L, -0x0.ffffffp0L, 1.570796411088596153167306681647360823228L, 8.813735448726963984495965873956465777250e-1L),
+    TEST_c_c (cacos, 0x0.ffffffp0L, 0x1p-23L, 4.391863861910487109445187743978204002614e-4L, -2.714321200917194650737217746780928423385e-4L),
+    TEST_c_c (cacos, -0x0.ffffffp0L, 0x1p-23L, 3.141153467203602189751698864505105063797L, -2.714321200917194650737217746780928423385e-4L),
+    TEST_c_c (cacos, 0x0.ffffffp0L, -0x1p-23L, 4.391863861910487109445187743978204002614e-4L, 2.714321200917194650737217746780928423385e-4L),
+    TEST_c_c (cacos, -0x0.ffffffp0L, -0x1p-23L, 3.141153467203602189751698864505105063797L, 2.714321200917194650737217746780928423385e-4L),
+    TEST_c_c (cacos, 0x1.fp-129L, 0x0.ffffffp0L, 1.570796326794896619231321691639751442097L, -8.813735448726938863015878255140556727969e-1L),
+    TEST_c_c (cacos, 0x1.fp-129L, -0x0.ffffffp0L, 1.570796326794896619231321691639751442097L, 8.813735448726938863015878255140556727969e-1L),
+    TEST_c_c (cacos, -0x1.fp-129L, 0x0.ffffffp0L, 1.570796326794896619231321691639751442101L, -8.813735448726938863015878255140556727969e-1L),
+    TEST_c_c (cacos, -0x1.fp-129L, -0x0.ffffffp0L, 1.570796326794896619231321691639751442101L, 8.813735448726938863015878255140556727969e-1L),
+    TEST_c_c (cacos, 0x0.ffffffp0L, 0x1.fp-129L, 3.452669847162035876032494826387364972849e-4L, -8.245504387859737323891843603996428534945e-36L),
+    TEST_c_c (cacos, -0x0.ffffffp0L, 0x1.fp-129L, 3.141247386605077034875040133796864147700L, -8.245504387859737323891843603996428534945e-36L),
+    TEST_c_c (cacos, 0x0.ffffffp0L, -0x1.fp-129L, 3.452669847162035876032494826387364972849e-4L, 8.245504387859737323891843603996428534945e-36L),
+    TEST_c_c (cacos, -0x0.ffffffp0L, -0x1.fp-129L, 3.141247386605077034875040133796864147700L, 8.245504387859737323891843603996428534945e-36L),
+    TEST_c_c (cacos, 0.0L, 0x0.ffffffp0L, 1.570796326794896619231321691639751442099L, -8.813735448726938863015878255140556727969e-1L),
+    TEST_c_c (cacos, 0.0L, -0x0.ffffffp0L, 1.570796326794896619231321691639751442099L, 8.813735448726938863015878255140556727969e-1L),
+    TEST_c_c (cacos, -0.0L, 0x0.ffffffp0L, 1.570796326794896619231321691639751442099L, -8.813735448726938863015878255140556727969e-1L),
+    TEST_c_c (cacos, -0.0L, -0x0.ffffffp0L, 1.570796326794896619231321691639751442099L, 8.813735448726938863015878255140556727969e-1L),
+    TEST_c_c (cacos, 0x0.ffffffp0L, 0.0L, 3.452669847162035876032494826387364972849e-4L, -0.0L),
+    TEST_c_c (cacos, -0x0.ffffffp0L, 0.0L, 3.141247386605077034875040133796864147700L, -0.0L),
+    TEST_c_c (cacos, 0x0.ffffffp0L, -0.0L, 3.452669847162035876032494826387364972849e-4L, 0.0L),
+    TEST_c_c (cacos, -0x0.ffffffp0L, -0.0L, 3.141247386605077034875040133796864147700L, 0.0L),
+    TEST_c_c (cacos, 0x1p-23L, 0.5L, 1.570796220170866625230343643673321150378L, -4.812118250596059896127318386463676808798e-1L),
+    TEST_c_c (cacos, 0x1p-23L, -0.5L, 1.570796220170866625230343643673321150378L, 4.812118250596059896127318386463676808798e-1L),
+    TEST_c_c (cacos, -0x1p-23L, 0.5L, 1.570796433418926613232299739606181733819L, -4.812118250596059896127318386463676808798e-1L),
+    TEST_c_c (cacos, -0x1p-23L, -0.5L, 1.570796433418926613232299739606181733819L, 4.812118250596059896127318386463676808798e-1L),
+    TEST_c_c (cacos, 0.5L, 0x1p-23L, 1.047197551196603215914744618665204532273L, -1.376510308240943236356088341381173571841e-7L),
+    TEST_c_c (cacos, -0.5L, 0x1p-23L, 2.094395102393190022547898764614298351924L, -1.376510308240943236356088341381173571841e-7L),
+    TEST_c_c (cacos, 0.5L, -0x1p-23L, 1.047197551196603215914744618665204532273L, 1.376510308240943236356088341381173571841e-7L),
+    TEST_c_c (cacos, -0.5L, -0x1p-23L, 2.094395102393190022547898764614298351924L, 1.376510308240943236356088341381173571841e-7L),
+    TEST_c_c (cacos, 0x1.fp-129L, 0.5L, 1.570796326794896619231321691639751442096L, -4.812118250596034474977589134243684231352e-1L),
+    TEST_c_c (cacos, 0x1.fp-129L, -0.5L, 1.570796326794896619231321691639751442096L, 4.812118250596034474977589134243684231352e-1L),
+    TEST_c_c (cacos, -0x1.fp-129L, 0.5L, 1.570796326794896619231321691639751442101L, -4.812118250596034474977589134243684231352e-1L),
+    TEST_c_c (cacos, -0x1.fp-129L, -0.5L, 1.570796326794896619231321691639751442101L, 4.812118250596034474977589134243684231352e-1L),
+    TEST_c_c (cacos, 0.5L, 0x1.fp-129L, 1.047197551196597746154214461093167628066L, -3.287317402534702257036015056278368274737e-39L, UNDERFLOW_EXCEPTION_FLOAT),
+    TEST_c_c (cacos, -0.5L, 0x1.fp-129L, 2.094395102393195492308428922186335256131L, -3.287317402534702257036015056278368274737e-39L, UNDERFLOW_EXCEPTION_FLOAT),
+    TEST_c_c (cacos, 0.5L, -0x1.fp-129L, 1.047197551196597746154214461093167628066L, 3.287317402534702257036015056278368274737e-39L, UNDERFLOW_EXCEPTION_FLOAT),
+    TEST_c_c (cacos, -0.5L, -0x1.fp-129L, 2.094395102393195492308428922186335256131L, 3.287317402534702257036015056278368274737e-39L, UNDERFLOW_EXCEPTION_FLOAT),
+    TEST_c_c (cacos, 0x1p-23L, 0x1p-23L, 1.570796207585607068450636380271254316214L, -1.192092895507818146886315028596704749235e-7L),
+    TEST_c_c (cacos, 0x1p-23L, -0x1p-23L, 1.570796207585607068450636380271254316214L, 1.192092895507818146886315028596704749235e-7L),
+    TEST_c_c (cacos, -0x1p-23L, 0x1p-23L, 1.570796446004186170012007003008248567984L, -1.192092895507818146886315028596704749235e-7L),
+    TEST_c_c (cacos, -0x1p-23L, -0x1p-23L, 1.570796446004186170012007003008248567984L, 1.192092895507818146886315028596704749235e-7L),
+    TEST_c_c (cacos, 0x1.fp-129L, 0x1p-23L, 1.570796326794896619231321691639751442096L, -1.192092895507809676556842485683592032154e-7L),
+    TEST_c_c (cacos, 0x1.fp-129L, -0x1p-23L, 1.570796326794896619231321691639751442096L, 1.192092895507809676556842485683592032154e-7L),
+    TEST_c_c (cacos, -0x1.fp-129L, 0x1p-23L, 1.570796326794896619231321691639751442101L, -1.192092895507809676556842485683592032154e-7L),
+    TEST_c_c (cacos, -0x1.fp-129L, -0x1p-23L, 1.570796326794896619231321691639751442101L, 1.192092895507809676556842485683592032154e-7L),
+    TEST_c_c (cacos, 0x1p-23L, 0x1.fp-129L, 1.570796207585607068449789347324000006847L, -2.846900380897747786805634596726756660388e-39L, UNDERFLOW_EXCEPTION_FLOAT),
+    TEST_c_c (cacos, -0x1p-23L, 0x1.fp-129L, 1.570796446004186170012854035955502877351L, -2.846900380897747786805634596726756660388e-39L, UNDERFLOW_EXCEPTION_FLOAT),
+    TEST_c_c (cacos, 0x1p-23L, -0x1.fp-129L, 1.570796207585607068449789347324000006847L, 2.846900380897747786805634596726756660388e-39L, UNDERFLOW_EXCEPTION_FLOAT),
+    TEST_c_c (cacos, -0x1p-23L, -0x1.fp-129L, 1.570796446004186170012854035955502877351L, 2.846900380897747786805634596726756660388e-39L, UNDERFLOW_EXCEPTION_FLOAT),
+    TEST_c_c (cacos, 0.0L, 0x1p-23L, 1.570796326794896619231321691639751442099L, -1.192092895507809676556842485683592032154e-7L),
+    TEST_c_c (cacos, 0.0L, -0x1p-23L, 1.570796326794896619231321691639751442099L, 1.192092895507809676556842485683592032154e-7L),
+    TEST_c_c (cacos, -0.0L, 0x1p-23L, 1.570796326794896619231321691639751442099L, -1.192092895507809676556842485683592032154e-7L),
+    TEST_c_c (cacos, -0.0L, -0x1p-23L, 1.570796326794896619231321691639751442099L, 1.192092895507809676556842485683592032154e-7L),
+    TEST_c_c (cacos, 0x1p-23L, 0.0L, 1.570796207585607068449789347324000006847L, -0.0L),
+    TEST_c_c (cacos, -0x1p-23L, 0.0L, 1.570796446004186170012854035955502877351L, -0.0L),
+    TEST_c_c (cacos, 0x1p-23L, -0.0L, 1.570796207585607068449789347324000006847L, 0.0L),
+    TEST_c_c (cacos, -0x1p-23L, -0.0L, 1.570796446004186170012854035955502877351L, 0.0L),
+    TEST_c_c (cacos, 0x1.fp-129L, 0x1.fp-129L, 1.570796326794896619231321691639751442096L, -2.846900380897727558361783801085126250967e-39L, UNDERFLOW_EXCEPTION_FLOAT),
+    TEST_c_c (cacos, 0x1.fp-129L, -0x1.fp-129L, 1.570796326794896619231321691639751442096L, 2.846900380897727558361783801085126250967e-39L, UNDERFLOW_EXCEPTION_FLOAT),
+    TEST_c_c (cacos, -0x1.fp-129L, 0x1.fp-129L, 1.570796326794896619231321691639751442101L, -2.846900380897727558361783801085126250967e-39L, UNDERFLOW_EXCEPTION_FLOAT),
+    TEST_c_c (cacos, -0x1.fp-129L, -0x1.fp-129L, 1.570796326794896619231321691639751442101L, 2.846900380897727558361783801085126250967e-39L, UNDERFLOW_EXCEPTION_FLOAT),
+#ifndef TEST_FLOAT
+    TEST_c_c (cacos, 0x1p-52L, 0x0.fffffffffffff8p0L, 1.570796326794896462222075823262236786996L, -8.813735870195429467279863907910458761820e-1L),
+    TEST_c_c (cacos, 0x1p-52L, -0x0.fffffffffffff8p0L, 1.570796326794896462222075823262236786996L, 8.813735870195429467279863907910458761820e-1L),
+    TEST_c_c (cacos, -0x1p-52L, 0x0.fffffffffffff8p0L, 1.570796326794896776240567560017266097201L, -8.813735870195429467279863907910458761820e-1L),
+    TEST_c_c (cacos, -0x1p-52L, -0x0.fffffffffffff8p0L, 1.570796326794896776240567560017266097201L, 8.813735870195429467279863907910458761820e-1L),
+    TEST_c_c (cacos, 0x0.fffffffffffff8p0L, 0x1p-52L, 1.895456983915074112227925127005564372844e-8L, -1.171456840272878582596796205397918831268e-8L),
+    TEST_c_c (cacos, -0x0.fffffffffffff8p0L, 0x1p-52L, 3.141592634635223399311902261000251614142L, -1.171456840272878582596796205397918831268e-8L),
+    TEST_c_c (cacos, 0x0.fffffffffffff8p0L, -0x1p-52L, 1.895456983915074112227925127005564372844e-8L, 1.171456840272878582596796205397918831268e-8L),
+    TEST_c_c (cacos, -0x0.fffffffffffff8p0L, -0x1p-52L, 3.141592634635223399311902261000251614142L, 1.171456840272878582596796205397918831268e-8L),
+    TEST_c_c (cacos, 0x1.fp-1025L, 0x0.fffffffffffff8p0L, 1.570796326794896619231321691639751442099L, -8.813735870195429467279863907910371604180e-1L),
+    TEST_c_c (cacos, 0x1.fp-1025L, -0x0.fffffffffffff8p0L, 1.570796326794896619231321691639751442099L, 8.813735870195429467279863907910371604180e-1L),
+    TEST_c_c (cacos, -0x1.fp-1025L, 0x0.fffffffffffff8p0L, 1.570796326794896619231321691639751442099L, -8.813735870195429467279863907910371604180e-1L),
+    TEST_c_c (cacos, -0x1.fp-1025L, -0x0.fffffffffffff8p0L, 1.570796326794896619231321691639751442099L, 8.813735870195429467279863907910371604180e-1L),
+    TEST_c_c (cacos, 0x0.fffffffffffff8p0L, 0x1.fp-1025L, 1.490116119384765638786343542550461592240e-8L, -3.616396521699973256461764099945789620604e-301L, UNDERFLOW_EXCEPTION_LDOUBLE_IBM),
+    TEST_c_c (cacos, -0x0.fffffffffffff8p0L, 0x1.fp-1025L, 3.141592638688632044614986995416067458693L, -3.616396521699973256461764099945789620604e-301L, UNDERFLOW_EXCEPTION_LDOUBLE_IBM),
+    TEST_c_c (cacos, 0x0.fffffffffffff8p0L, -0x1.fp-1025L, 1.490116119384765638786343542550461592240e-8L, 3.616396521699973256461764099945789620604e-301L, UNDERFLOW_EXCEPTION_LDOUBLE_IBM),
+    TEST_c_c (cacos, -0x0.fffffffffffff8p0L, -0x1.fp-1025L, 3.141592638688632044614986995416067458693L, 3.616396521699973256461764099945789620604e-301L, UNDERFLOW_EXCEPTION_LDOUBLE_IBM),
+    TEST_c_c (cacos, 0.0L, 0x0.fffffffffffff8p0L, 1.570796326794896619231321691639751442099L, -8.813735870195429467279863907910371604180e-1L),
+    TEST_c_c (cacos, 0.0L, -0x0.fffffffffffff8p0L, 1.570796326794896619231321691639751442099L, 8.813735870195429467279863907910371604180e-1L),
+    TEST_c_c (cacos, -0.0L, 0x0.fffffffffffff8p0L, 1.570796326794896619231321691639751442099L, -8.813735870195429467279863907910371604180e-1L),
+    TEST_c_c (cacos, -0.0L, -0x0.fffffffffffff8p0L, 1.570796326794896619231321691639751442099L, 8.813735870195429467279863907910371604180e-1L),
+    TEST_c_c (cacos, 0x0.fffffffffffff8p0L, 0.0L, 1.490116119384765638786343542550461592240e-8L, -0.0L),
+    TEST_c_c (cacos, -0x0.fffffffffffff8p0L, 0.0L, 3.141592638688632044614986995416067458693L, -0.0L),
+    TEST_c_c (cacos, 0x0.fffffffffffff8p0L, -0.0L, 1.490116119384765638786343542550461592240e-8L, 0.0L),
+    TEST_c_c (cacos, -0x0.fffffffffffff8p0L, -0.0L, 3.141592638688632044614986995416067458693L, 0.0L),
+#endif
+    TEST_c_c (cacos, 0x1p-52L, 0.5L, 1.570796326794896420628589431857911675917L, -4.812118250596034474977589134243772428682e-1L),
+    TEST_c_c (cacos, 0x1p-52L, -0.5L, 1.570796326794896420628589431857911675917L, 4.812118250596034474977589134243772428682e-1L),
+    TEST_c_c (cacos, -0x1p-52L, 0.5L, 1.570796326794896817834053951421591208280L, -4.812118250596034474977589134243772428682e-1L),
+    TEST_c_c (cacos, -0x1p-52L, -0.5L, 1.570796326794896817834053951421591208280L, 4.812118250596034474977589134243772428682e-1L),
+    TEST_c_c (cacos, 0.5L, 0x1p-52L, 1.047197551196597746154214461093186605110L, -2.563950248511418570403591756798643804971e-16L),
+    TEST_c_c (cacos, -0.5L, 0x1p-52L, 2.094395102393195492308428922186316279087L, -2.563950248511418570403591756798643804971e-16L),
+    TEST_c_c (cacos, 0.5L, -0x1p-52L, 1.047197551196597746154214461093186605110L, 2.563950248511418570403591756798643804971e-16L),
+    TEST_c_c (cacos, -0.5L, -0x1p-52L, 2.094395102393195492308428922186316279087L, 2.563950248511418570403591756798643804971e-16L),
+#ifndef TEST_FLOAT
+    TEST_c_c (cacos, 0x1.fp-1025L, 0.5L, 1.570796326794896619231321691639751442099L, -4.812118250596034474977589134243684231352e-1L),
+    TEST_c_c (cacos, 0x1.fp-1025L, -0.5L, 1.570796326794896619231321691639751442099L, 4.812118250596034474977589134243684231352e-1L),
+    TEST_c_c (cacos, -0x1.fp-1025L, 0.5L, 1.570796326794896619231321691639751442099L, -4.812118250596034474977589134243684231352e-1L),
+    TEST_c_c (cacos, -0x1.fp-1025L, -0.5L, 1.570796326794896619231321691639751442099L, 4.812118250596034474977589134243684231352e-1L),
+    TEST_c_c (cacos, 0.5L, 0x1.fp-1025L, 1.047197551196597746154214461093167628066L, -6.222508863508420569166420770843207333493e-309L, UNDERFLOW_EXCEPTION_DOUBLE),
+    TEST_c_c (cacos, -0.5L, 0x1.fp-1025L, 2.094395102393195492308428922186335256131L, -6.222508863508420569166420770843207333493e-309L, UNDERFLOW_EXCEPTION_DOUBLE),
+    TEST_c_c (cacos, 0.5L, -0x1.fp-1025L, 1.047197551196597746154214461093167628066L, 6.222508863508420569166420770843207333493e-309L, UNDERFLOW_EXCEPTION_DOUBLE),
+    TEST_c_c (cacos, -0.5L, -0x1.fp-1025L, 2.094395102393195492308428922186335256131L, 6.222508863508420569166420770843207333493e-309L, UNDERFLOW_EXCEPTION_DOUBLE),
+#endif
+    TEST_c_c (cacos, 0x1p-52L, 0x1p-52L, 1.570796326794896397186716766608443357372L, -2.220446049250313080847263336181677117148e-16L),
+    TEST_c_c (cacos, 0x1p-52L, -0x1p-52L, 1.570796326794896397186716766608443357372L, 2.220446049250313080847263336181677117148e-16L),
+    TEST_c_c (cacos, -0x1p-52L, 0x1p-52L, 1.570796326794896841275926616671059526825L, -2.220446049250313080847263336181677117148e-16L),
+    TEST_c_c (cacos, -0x1p-52L, -0x1p-52L, 1.570796326794896841275926616671059526825L, 2.220446049250313080847263336181677117148e-16L),
+#ifndef TEST_FLOAT
+    TEST_c_c (cacos, 0x1.fp-1025L, 0x1p-52L, 1.570796326794896619231321691639751442099L, -2.220446049250313080847263336181622378926e-16L),
+    TEST_c_c (cacos, 0x1.fp-1025L, -0x1p-52L, 1.570796326794896619231321691639751442099L, 2.220446049250313080847263336181622378926e-16L),
+    TEST_c_c (cacos, -0x1.fp-1025L, 0x1p-52L, 1.570796326794896619231321691639751442099L, -2.220446049250313080847263336181622378926e-16L),
+    TEST_c_c (cacos, -0x1.fp-1025L, -0x1p-52L, 1.570796326794896619231321691639751442099L, 2.220446049250313080847263336181622378926e-16L),
+    TEST_c_c (cacos, 0x1p-52L, 0x1.fp-1025L, 1.570796326794896397186716766608443357372L, -5.388850751072128349671657362289548938458e-309L, UNDERFLOW_EXCEPTION_DOUBLE),
+    TEST_c_c (cacos, -0x1p-52L, 0x1.fp-1025L, 1.570796326794896841275926616671059526825L, -5.388850751072128349671657362289548938458e-309L, UNDERFLOW_EXCEPTION_DOUBLE),
+    TEST_c_c (cacos, 0x1p-52L, -0x1.fp-1025L, 1.570796326794896397186716766608443357372L, 5.388850751072128349671657362289548938458e-309L, UNDERFLOW_EXCEPTION_DOUBLE),
+    TEST_c_c (cacos, -0x1p-52L, -0x1.fp-1025L, 1.570796326794896841275926616671059526825L, 5.388850751072128349671657362289548938458e-309L, UNDERFLOW_EXCEPTION_DOUBLE),
+#endif
+    TEST_c_c (cacos, 0.0L, 0x1p-52L, 1.570796326794896619231321691639751442099L, -2.220446049250313080847263336181622378926e-16L),
+    TEST_c_c (cacos, 0.0L, -0x1p-52L, 1.570796326794896619231321691639751442099L, 2.220446049250313080847263336181622378926e-16L),
+    TEST_c_c (cacos, -0.0L, 0x1p-52L, 1.570796326794896619231321691639751442099L, -2.220446049250313080847263336181622378926e-16L),
+    TEST_c_c (cacos, -0.0L, -0x1p-52L, 1.570796326794896619231321691639751442099L, 2.220446049250313080847263336181622378926e-16L),
+    TEST_c_c (cacos, 0x1p-52L, 0.0L, 1.570796326794896397186716766608443357372L, -0.0L),
+    TEST_c_c (cacos, -0x1p-52L, 0.0L, 1.570796326794896841275926616671059526825L, -0.0L),
+    TEST_c_c (cacos, 0x1p-52L, -0.0L, 1.570796326794896397186716766608443357372L, 0.0L),
+    TEST_c_c (cacos, -0x1p-52L, -0.0L, 1.570796326794896841275926616671059526825L, 0.0L),
+#ifndef TEST_FLOAT
+    TEST_c_c (cacos, 0x1.fp-1025L, 0x1.fp-1025L, 1.570796326794896619231321691639751442099L, -5.388850751072128349671657362289416093031e-309L, UNDERFLOW_EXCEPTION_DOUBLE),
+    TEST_c_c (cacos, 0x1.fp-1025L, -0x1.fp-1025L, 1.570796326794896619231321691639751442099L, 5.388850751072128349671657362289416093031e-309L, UNDERFLOW_EXCEPTION_DOUBLE),
+    TEST_c_c (cacos, -0x1.fp-1025L, 0x1.fp-1025L, 1.570796326794896619231321691639751442099L, -5.388850751072128349671657362289416093031e-309L, UNDERFLOW_EXCEPTION_DOUBLE),
+    TEST_c_c (cacos, -0x1.fp-1025L, -0x1.fp-1025L, 1.570796326794896619231321691639751442099L, 5.388850751072128349671657362289416093031e-309L, UNDERFLOW_EXCEPTION_DOUBLE),
+#endif
+#if defined TEST_LDOUBLE && LDBL_MANT_DIG >= 64
+    TEST_c_c (cacos, 0x1p-63L, 0x0.ffffffffffffffffp0L, 1.570796326794896619154657020805582738025L, -8.813735870195430251942769895627079569937e-1L),
+    TEST_c_c (cacos, 0x1p-63L, -0x0.ffffffffffffffffp0L, 1.570796326794896619154657020805582738025L, 8.813735870195430251942769895627079569937e-1L),
+    TEST_c_c (cacos, -0x1p-63L, 0x0.ffffffffffffffffp0L, 1.570796326794896619307986362473920146173L, -8.813735870195430251942769895627079569937e-1L),
+    TEST_c_c (cacos, -0x1p-63L, -0x0.ffffffffffffffffp0L, 1.570796326794896619307986362473920146173L, 8.813735870195430251942769895627079569937e-1L),
+    TEST_c_c (cacos, 0x0.ffffffffffffffffp0L, 0x1p-63L, 4.188407771167967636741951941902992986043e-10L, -2.588578361325995866221775673638805081337e-10L),
+    TEST_c_c (cacos, -0x0.ffffffffffffffffp0L, 0x1p-63L, 3.141592653170952461345846619605307690007L, -2.588578361325995866221775673638805081337e-10L),
+    TEST_c_c (cacos, 0x0.ffffffffffffffffp0L, -0x1p-63L, 4.188407771167967636741951941902992986043e-10L, 2.588578361325995866221775673638805081337e-10L),
+    TEST_c_c (cacos, -0x0.ffffffffffffffffp0L, -0x1p-63L, 3.141592653170952461345846619605307690007L, 2.588578361325995866221775673638805081337e-10L),
+# if LDBL_MIN_EXP <= -16381
+    TEST_c_c (cacos, 0x1.fp-16385L, 0x0.ffffffffffffffffp0L, 1.570796326794896619231321691639751442099L, -8.813735870195430251942769895627079569917e-1L),
+    TEST_c_c (cacos, 0x1.fp-16385L, -0x0.ffffffffffffffffp0L, 1.570796326794896619231321691639751442099L, 8.813735870195430251942769895627079569917e-1L),
+    TEST_c_c (cacos, -0x1.fp-16385L, 0x0.ffffffffffffffffp0L, 1.570796326794896619231321691639751442099L, -8.813735870195430251942769895627079569917e-1L),
+    TEST_c_c (cacos, -0x1.fp-16385L, -0x0.ffffffffffffffffp0L, 1.570796326794896619231321691639751442099L, 8.813735870195430251942769895627079569917e-1L),
+    TEST_c_c (cacos, 0x0.ffffffffffffffffp0L, 0x1.fp-16385L, 3.292722539913596233371825532007990724506e-10L, -2.472906068161537187835415298076415423459e-4923L),
+    TEST_c_c (cacos, -0x0.ffffffffffffffffp0L, 0x1.fp-16385L, 3.141592653260520984471283759942320330996L, -2.472906068161537187835415298076415423459e-4923L),
+    TEST_c_c (cacos, 0x0.ffffffffffffffffp0L, -0x1.fp-16385L, 3.292722539913596233371825532007990724506e-10L, 2.472906068161537187835415298076415423459e-4923L),
+    TEST_c_c (cacos, -0x0.ffffffffffffffffp0L, -0x1.fp-16385L, 3.141592653260520984471283759942320330996L, 2.472906068161537187835415298076415423459e-4923L),
+# endif
+    TEST_c_c (cacos, 0.0L, 0x0.ffffffffffffffffp0L, 1.570796326794896619231321691639751442099L, -8.813735870195430251942769895627079569917e-1L),
+    TEST_c_c (cacos, 0.0L, -0x0.ffffffffffffffffp0L, 1.570796326794896619231321691639751442099L, 8.813735870195430251942769895627079569917e-1L),
+    TEST_c_c (cacos, -0.0L, 0x0.ffffffffffffffffp0L, 1.570796326794896619231321691639751442099L, -8.813735870195430251942769895627079569917e-1L),
+    TEST_c_c (cacos, -0.0L, -0x0.ffffffffffffffffp0L, 1.570796326794896619231321691639751442099L, 8.813735870195430251942769895627079569917e-1L),
+    TEST_c_c (cacos, 0x0.ffffffffffffffffp0L, 0.0L, 3.292722539913596233371825532007990724506e-10L, -0.0L),
+    TEST_c_c (cacos, -0x0.ffffffffffffffffp0L, 0.0L, 3.141592653260520984471283759942320330996L, -0.0L),
+    TEST_c_c (cacos, 0x0.ffffffffffffffffp0L, -0.0L, 3.292722539913596233371825532007990724506e-10L, 0.0L),
+    TEST_c_c (cacos, -0x0.ffffffffffffffffp0L, -0.0L, 3.141592653260520984471283759942320330996L, 0.0L),
+#endif
+    TEST_c_c (cacos, 0x1p-63L, 0.5L, 1.570796326794896619134347701278529840650L, -4.812118250596034474977589134243684231373e-1L),
+    TEST_c_c (cacos, 0x1p-63L, -0.5L, 1.570796326794896619134347701278529840650L, 4.812118250596034474977589134243684231373e-1L),
+    TEST_c_c (cacos, -0x1p-63L, 0.5L, 1.570796326794896619328295682000973043547L, -4.812118250596034474977589134243684231373e-1L),
+    TEST_c_c (cacos, -0x1p-63L, -0.5L, 1.570796326794896619328295682000973043547L, 4.812118250596034474977589134243684231373e-1L),
+    TEST_c_c (cacos, 0.5L, 0x1p-63L, 1.047197551196597746154214461093167628070L, -1.251928832280966098829878787499365228659e-19L),
+    TEST_c_c (cacos, -0.5L, 0x1p-63L, 2.094395102393195492308428922186335256127L, -1.251928832280966098829878787499365228659e-19L),
+    TEST_c_c (cacos, 0.5L, -0x1p-63L, 1.047197551196597746154214461093167628070L, 1.251928832280966098829878787499365228659e-19L),
+    TEST_c_c (cacos, -0.5L, -0x1p-63L, 2.094395102393195492308428922186335256127L, 1.251928832280966098829878787499365228659e-19L),
+#if defined TEST_LDOUBLE && LDBL_MIN_EXP <= -16381
+    TEST_c_c (cacos, 0x1.fp-16385L, 0.5L, 1.570796326794896619231321691639751442099L, -4.812118250596034474977589134243684231352e-1L),
+    TEST_c_c (cacos, 0x1.fp-16385L, -0.5L, 1.570796326794896619231321691639751442099L, 4.812118250596034474977589134243684231352e-1L),
+    TEST_c_c (cacos, -0x1.fp-16385L, 0.5L, 1.570796326794896619231321691639751442099L, -4.812118250596034474977589134243684231352e-1L),
+    TEST_c_c (cacos, -0x1.fp-16385L, -0.5L, 1.570796326794896619231321691639751442099L, 4.812118250596034474977589134243684231352e-1L),
+    TEST_c_c (cacos, 0.5L, 0x1.fp-16385L, 1.047197551196597746154214461093167628066L, -9.402257155670418112159334875199821342890e-4933L, UNDERFLOW_EXCEPTION),
+    TEST_c_c (cacos, -0.5L, 0x1.fp-16385L, 2.094395102393195492308428922186335256131L, -9.402257155670418112159334875199821342890e-4933L, UNDERFLOW_EXCEPTION),
+    TEST_c_c (cacos, 0.5L, -0x1.fp-16385L, 1.047197551196597746154214461093167628066L, 9.402257155670418112159334875199821342890e-4933L, UNDERFLOW_EXCEPTION),
+    TEST_c_c (cacos, -0.5L, -0x1.fp-16385L, 2.094395102393195492308428922186335256131L, 9.402257155670418112159334875199821342890e-4933L, UNDERFLOW_EXCEPTION),
+#endif
+    TEST_c_c (cacos, 0x1p-63L, 0x1p-63L, 1.570796326794896619122901474391200998698L, -1.084202172485504434007452800869941711430e-19L),
+    TEST_c_c (cacos, 0x1p-63L, -0x1p-63L, 1.570796326794896619122901474391200998698L, 1.084202172485504434007452800869941711430e-19L),
+    TEST_c_c (cacos, -0x1p-63L, 0x1p-63L, 1.570796326794896619339741908888301885499L, -1.084202172485504434007452800869941711430e-19L),
+    TEST_c_c (cacos, -0x1p-63L, -0x1p-63L, 1.570796326794896619339741908888301885499L, 1.084202172485504434007452800869941711430e-19L),
+#if defined TEST_LDOUBLE && LDBL_MIN_EXP <= -16381
+    TEST_c_c (cacos, 0x1.fp-16385L, 0x1p-63L, 1.570796326794896619231321691639751442099L, -1.084202172485504434007452800869941711424e-19L),
+    TEST_c_c (cacos, 0x1.fp-16385L, -0x1p-63L, 1.570796326794896619231321691639751442099L, 1.084202172485504434007452800869941711424e-19L),
+    TEST_c_c (cacos, -0x1.fp-16385L, 0x1p-63L, 1.570796326794896619231321691639751442099L, -1.084202172485504434007452800869941711424e-19L),
+    TEST_c_c (cacos, -0x1.fp-16385L, -0x1p-63L, 1.570796326794896619231321691639751442099L, 1.084202172485504434007452800869941711424e-19L),
+    TEST_c_c (cacos, 0x1p-63L, 0x1.fp-16385L, 1.570796326794896619122901474391200998698L, -8.142593549724601460479922838826119584465e-4933L, UNDERFLOW_EXCEPTION),
+    TEST_c_c (cacos, -0x1p-63L, 0x1.fp-16385L, 1.570796326794896619339741908888301885499L, -8.142593549724601460479922838826119584465e-4933L, UNDERFLOW_EXCEPTION),
+    TEST_c_c (cacos, 0x1p-63L, -0x1.fp-16385L, 1.570796326794896619122901474391200998698L, 8.142593549724601460479922838826119584465e-4933L, UNDERFLOW_EXCEPTION),
+    TEST_c_c (cacos, -0x1p-63L, -0x1.fp-16385L, 1.570796326794896619339741908888301885499L, 8.142593549724601460479922838826119584465e-4933L, UNDERFLOW_EXCEPTION),
+#endif
+    TEST_c_c (cacos, 0.0L, 0x1p-63L, 1.570796326794896619231321691639751442099L, -1.084202172485504434007452800869941711424e-19L),
+    TEST_c_c (cacos, 0.0L, -0x1p-63L, 1.570796326794896619231321691639751442099L, 1.084202172485504434007452800869941711424e-19L),
+    TEST_c_c (cacos, -0.0L, 0x1p-63L, 1.570796326794896619231321691639751442099L, -1.084202172485504434007452800869941711424e-19L),
+    TEST_c_c (cacos, -0.0L, -0x1p-63L, 1.570796326794896619231321691639751442099L, 1.084202172485504434007452800869941711424e-19L),
+    TEST_c_c (cacos, 0x1p-63L, 0.0L, 1.570796326794896619122901474391200998698L, -0.0L),
+    TEST_c_c (cacos, -0x1p-63L, 0.0L, 1.570796326794896619339741908888301885499L, -0.0L),
+    TEST_c_c (cacos, 0x1p-63L, -0.0L, 1.570796326794896619122901474391200998698L, 0.0L),
+    TEST_c_c (cacos, -0x1p-63L, -0.0L, 1.570796326794896619339741908888301885499L, 0.0L),
+#if defined TEST_LDOUBLE && LDBL_MIN_EXP <= -16381
+    TEST_c_c (cacos, 0x1.fp-16385L, 0x1.fp-16385L, 1.570796326794896619231321691639751442099L, -8.142593549724601460479922838826119584417e-4933L, UNDERFLOW_EXCEPTION),
+    TEST_c_c (cacos, 0x1.fp-16385L, -0x1.fp-16385L, 1.570796326794896619231321691639751442099L, 8.142593549724601460479922838826119584417e-4933L, UNDERFLOW_EXCEPTION),
+    TEST_c_c (cacos, -0x1.fp-16385L, 0x1.fp-16385L, 1.570796326794896619231321691639751442099L, -8.142593549724601460479922838826119584417e-4933L, UNDERFLOW_EXCEPTION),
+    TEST_c_c (cacos, -0x1.fp-16385L, -0x1.fp-16385L, 1.570796326794896619231321691639751442099L, 8.142593549724601460479922838826119584417e-4933L, UNDERFLOW_EXCEPTION),
+#endif
+#if defined TEST_LDOUBLE && LDBL_MANT_DIG >= 106
+    TEST_c_c (cacos, 0x1p-105L, 0x0.ffffffffffffffffffffffffffcp0L, 1.570796326794896619231321691639734010571L, -8.813735870195430252326093249797835932642e-1L),
+    TEST_c_c (cacos, 0x1p-105L, -0x0.ffffffffffffffffffffffffffcp0L, 1.570796326794896619231321691639734010571L, 8.813735870195430252326093249797835932642e-1L),
+    TEST_c_c (cacos, -0x1p-105L, 0x0.ffffffffffffffffffffffffffcp0L, 1.570796326794896619231321691639768873627L, -8.813735870195430252326093249797835932642e-1L),
+    TEST_c_c (cacos, -0x1p-105L, -0x0.ffffffffffffffffffffffffffcp0L, 1.570796326794896619231321691639768873627L, 8.813735870195430252326093249797835932642e-1L),
+    TEST_c_c (cacos, 0x0.ffffffffffffffffffffffffffcp0L, 0x1p-105L, 1.997188458999618357060632049675702684031e-16L, -1.234330349600789959989661887846005659983e-16L),
+    TEST_c_c (cacos, -0x0.ffffffffffffffffffffffffffcp0L, 0x1p-105L, 3.141592653589793038743797483317667178134L, -1.234330349600789959989661887846005659983e-16L),
+    TEST_c_c (cacos, 0x0.ffffffffffffffffffffffffffcp0L, -0x1p-105L, 1.997188458999618357060632049675702684031e-16L, 1.234330349600789959989661887846005659983e-16L),
+    TEST_c_c (cacos, -0x0.ffffffffffffffffffffffffffcp0L, -0x1p-105L, 3.141592653589793038743797483317667178134L, 1.234330349600789959989661887846005659983e-16L),
+    TEST_c_c (cacos, 0x1.fp-1025L, 0x0.ffffffffffffffffffffffffffcp0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249797835932642e-1L),
+    TEST_c_c (cacos, 0x1.fp-1025L, -0x0.ffffffffffffffffffffffffffcp0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249797835932642e-1L),
+    TEST_c_c (cacos, -0x1.fp-1025L, 0x0.ffffffffffffffffffffffffffcp0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249797835932642e-1L),
+    TEST_c_c (cacos, -0x1.fp-1025L, -0x0.ffffffffffffffffffffffffffcp0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249797835932642e-1L),
+    TEST_c_c (cacos, 0x0.ffffffffffffffffffffffffffcp0L, 0x1.fp-1025L, 1.570092458683775059393382371963565104164e-16L, -3.432186888910770473784103112009399360940e-293L, UNDERFLOW_EXCEPTION_LDOUBLE_IBM),
+    TEST_c_c (cacos, -0x0.ffffffffffffffffffffffffffcp0L, 0x1.fp-1025L, 3.141592653589793081453397514901996944859L, -3.432186888910770473784103112009399360940e-293L, UNDERFLOW_EXCEPTION_LDOUBLE_IBM),
+    TEST_c_c (cacos, 0x0.ffffffffffffffffffffffffffcp0L, -0x1.fp-1025L, 1.570092458683775059393382371963565104164e-16L, 3.432186888910770473784103112009399360940e-293L, UNDERFLOW_EXCEPTION_LDOUBLE_IBM),
+    TEST_c_c (cacos, -0x0.ffffffffffffffffffffffffffcp0L, -0x1.fp-1025L, 3.141592653589793081453397514901996944859L, 3.432186888910770473784103112009399360940e-293L, UNDERFLOW_EXCEPTION_LDOUBLE_IBM),
+    TEST_c_c (cacos, 0.0L, 0x0.ffffffffffffffffffffffffffcp0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249797835932642e-1L),
+    TEST_c_c (cacos, 0.0L, -0x0.ffffffffffffffffffffffffffcp0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249797835932642e-1L),
+    TEST_c_c (cacos, -0.0L, 0x0.ffffffffffffffffffffffffffcp0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249797835932642e-1L),
+    TEST_c_c (cacos, -0.0L, -0x0.ffffffffffffffffffffffffffcp0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249797835932642e-1L),
+    TEST_c_c (cacos, 0x0.ffffffffffffffffffffffffffcp0L, 0.0L, 1.570092458683775059393382371963565104164e-16L, -0.0L),
+    TEST_c_c (cacos, -0x0.ffffffffffffffffffffffffffcp0L, 0.0L, 3.141592653589793081453397514901996944859L, -0.0L),
+    TEST_c_c (cacos, 0x0.ffffffffffffffffffffffffffcp0L, -0.0L, 1.570092458683775059393382371963565104164e-16L, 0.0L),
+    TEST_c_c (cacos, -0x0.ffffffffffffffffffffffffffcp0L, -0.0L, 3.141592653589793081453397514901996944859L, 0.0L),
+#endif
+    TEST_c_c (cacos, 0x1p-105L, 0.5L, 1.570796326794896619231321691639729392766L, -4.812118250596034474977589134243684231352e-1L),
+    TEST_c_c (cacos, 0x1p-105L, -0.5L, 1.570796326794896619231321691639729392766L, 4.812118250596034474977589134243684231352e-1L),
+    TEST_c_c (cacos, -0x1p-105L, 0.5L, 1.570796326794896619231321691639773491431L, -4.812118250596034474977589134243684231352e-1L),
+    TEST_c_c (cacos, -0x1p-105L, -0.5L, 1.570796326794896619231321691639773491431L, 4.812118250596034474977589134243684231352e-1L),
+    TEST_c_c (cacos, 0.5L, 0x1p-105L, 1.047197551196597746154214461093167628066L, -2.846556599890768890940941645338546615370e-32L),
+    TEST_c_c (cacos, -0.5L, 0x1p-105L, 2.094395102393195492308428922186335256131L, -2.846556599890768890940941645338546615370e-32L),
+    TEST_c_c (cacos, 0.5L, -0x1p-105L, 1.047197551196597746154214461093167628066L, 2.846556599890768890940941645338546615370e-32L),
+    TEST_c_c (cacos, -0.5L, -0x1p-105L, 2.094395102393195492308428922186335256131L, 2.846556599890768890940941645338546615370e-32L),
+    TEST_c_c (cacos, 0x1p-105L, 0x1p-105L, 1.570796326794896619231321691639726790195L, -2.465190328815661891911651766508706967729e-32L),
+    TEST_c_c (cacos, 0x1p-105L, -0x1p-105L, 1.570796326794896619231321691639726790195L, 2.465190328815661891911651766508706967729e-32L),
+    TEST_c_c (cacos, -0x1p-105L, 0x1p-105L, 1.570796326794896619231321691639776094002L, -2.465190328815661891911651766508706967729e-32L),
+    TEST_c_c (cacos, -0x1p-105L, -0x1p-105L, 1.570796326794896619231321691639776094002L, 2.465190328815661891911651766508706967729e-32L),
+#ifndef TEST_FLOAT
+    TEST_c_c (cacos, 0x1.fp-1025L, 0x1p-105L, 1.570796326794896619231321691639751442099L, -2.465190328815661891911651766508706967729e-32L),
+    TEST_c_c (cacos, 0x1.fp-1025L, -0x1p-105L, 1.570796326794896619231321691639751442099L, 2.465190328815661891911651766508706967729e-32L),
+    TEST_c_c (cacos, -0x1.fp-1025L, 0x1p-105L, 1.570796326794896619231321691639751442099L, -2.465190328815661891911651766508706967729e-32L),
+    TEST_c_c (cacos, -0x1.fp-1025L, -0x1p-105L, 1.570796326794896619231321691639751442099L, 2.465190328815661891911651766508706967729e-32L),
+    TEST_c_c (cacos, 0x1p-105L, 0x1.fp-1025L, 1.570796326794896619231321691639726790195L, -5.388850751072128349671657362289416093031e-309L, UNDERFLOW_EXCEPTION_DOUBLE),
+    TEST_c_c (cacos, -0x1p-105L, 0x1.fp-1025L, 1.570796326794896619231321691639776094002L, -5.388850751072128349671657362289416093031e-309L, UNDERFLOW_EXCEPTION_DOUBLE),
+    TEST_c_c (cacos, 0x1p-105L, -0x1.fp-1025L, 1.570796326794896619231321691639726790195L, 5.388850751072128349671657362289416093031e-309L, UNDERFLOW_EXCEPTION_DOUBLE),
+    TEST_c_c (cacos, -0x1p-105L, -0x1.fp-1025L, 1.570796326794896619231321691639776094002L, 5.388850751072128349671657362289416093031e-309L, UNDERFLOW_EXCEPTION_DOUBLE),
+#endif
+    TEST_c_c (cacos, 0.0L, 0x1p-105L, 1.570796326794896619231321691639751442099L, -2.465190328815661891911651766508706967729e-32L),
+    TEST_c_c (cacos, 0.0L, -0x1p-105L, 1.570796326794896619231321691639751442099L, 2.465190328815661891911651766508706967729e-32L),
+    TEST_c_c (cacos, -0.0L, 0x1p-105L, 1.570796326794896619231321691639751442099L, -2.465190328815661891911651766508706967729e-32L),
+    TEST_c_c (cacos, -0.0L, -0x1p-105L, 1.570796326794896619231321691639751442099L, 2.465190328815661891911651766508706967729e-32L),
+    TEST_c_c (cacos, 0x1p-105L, 0.0L, 1.570796326794896619231321691639726790195L, -0.0L),
+    TEST_c_c (cacos, -0x1p-105L, 0.0L, 1.570796326794896619231321691639776094002L, -0.0L),
+    TEST_c_c (cacos, 0x1p-105L, -0.0L, 1.570796326794896619231321691639726790195L, 0.0L),
+    TEST_c_c (cacos, -0x1p-105L, -0.0L, 1.570796326794896619231321691639776094002L, 0.0L),
+#if defined TEST_LDOUBLE && LDBL_MANT_DIG >= 113
+    TEST_c_c (cacos, 0x1p-112L, 0x0.ffffffffffffffffffffffffffff8p0L, 1.570796326794896619231321691639751305915L, -8.813735870195430252326093249797922409363e-1L),
+    TEST_c_c (cacos, 0x1p-112L, -0x0.ffffffffffffffffffffffffffff8p0L, 1.570796326794896619231321691639751305915L, 8.813735870195430252326093249797922409363e-1L),
+    TEST_c_c (cacos, -0x1p-112L, 0x0.ffffffffffffffffffffffffffff8p0L, 1.570796326794896619231321691639751578282L, -8.813735870195430252326093249797922409363e-1L),
+    TEST_c_c (cacos, -0x1p-112L, -0x0.ffffffffffffffffffffffffffff8p0L, 1.570796326794896619231321691639751578282L, 8.813735870195430252326093249797922409363e-1L),
+    TEST_c_c (cacos, 0x0.ffffffffffffffffffffffffffff8p0L, 0x1p-112L, 1.765281878332676474347460257221369818872e-17L, -1.091004200533850618345330909857103457781e-17L),
+    TEST_c_c (cacos, -0x0.ffffffffffffffffffffffffffff8p0L, 0x1p-112L, 3.141592653589793220809824599952738140723L, -1.091004200533850618345330909857103457781e-17L),
+    TEST_c_c (cacos, 0x0.ffffffffffffffffffffffffffff8p0L, -0x1p-112L, 1.765281878332676474347460257221369818872e-17L, 1.091004200533850618345330909857103457781e-17L),
+    TEST_c_c (cacos, -0x0.ffffffffffffffffffffffffffff8p0L, -0x1p-112L, 3.141592653589793220809824599952738140723L, 1.091004200533850618345330909857103457781e-17L),
+    TEST_c_c (cacos, 0x1.fp-16385L, 0x0.ffffffffffffffffffffffffffff8p0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249797922409363e-1L),
+    TEST_c_c (cacos, 0x1.fp-16385L, -0x0.ffffffffffffffffffffffffffff8p0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249797922409363e-1L),
+    TEST_c_c (cacos, -0x1.fp-16385L, 0x0.ffffffffffffffffffffffffffff8p0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249797922409363e-1L),
+    TEST_c_c (cacos, -0x1.fp-16385L, -0x0.ffffffffffffffffffffffffffff8p0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249797922409363e-1L),
+    TEST_c_c (cacos, 0x0.ffffffffffffffffffffffffffff8p0L, 0x1.fp-16385L, 1.387778780781445675529539585113525401762e-17L, -5.867357004219059108790368268900490184505e-4916L),
+    TEST_c_c (cacos, -0x0.ffffffffffffffffffffffffffff8p0L, 0x1.fp-16385L, 3.141592653589793224584855575465046128902L, -5.867357004219059108790368268900490184505e-4916L),
+    TEST_c_c (cacos, 0x0.ffffffffffffffffffffffffffff8p0L, -0x1.fp-16385L, 1.387778780781445675529539585113525401762e-17L, 5.867357004219059108790368268900490184505e-4916L),
+    TEST_c_c (cacos, -0x0.ffffffffffffffffffffffffffff8p0L, -0x1.fp-16385L, 3.141592653589793224584855575465046128902L, 5.867357004219059108790368268900490184505e-4916L),
+    TEST_c_c (cacos, 0.0L, 0x0.ffffffffffffffffffffffffffff8p0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249797922409363e-1L),
+    TEST_c_c (cacos, 0.0L, -0x0.ffffffffffffffffffffffffffff8p0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249797922409363e-1L),
+    TEST_c_c (cacos, -0.0L, 0x0.ffffffffffffffffffffffffffff8p0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249797922409363e-1L),
+    TEST_c_c (cacos, -0.0L, -0x0.ffffffffffffffffffffffffffff8p0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249797922409363e-1L),
+    TEST_c_c (cacos, 0x0.ffffffffffffffffffffffffffff8p0L, 0.0L, 1.387778780781445675529539585113525401762e-17L, -0.0L),
+    TEST_c_c (cacos, -0x0.ffffffffffffffffffffffffffff8p0L, 0.0L, 3.141592653589793224584855575465046128902L, -0.0L),
+    TEST_c_c (cacos, 0x0.ffffffffffffffffffffffffffff8p0L, -0.0L, 1.387778780781445675529539585113525401762e-17L, 0.0L),
+    TEST_c_c (cacos, -0x0.ffffffffffffffffffffffffffff8p0L, -0.0L, 3.141592653589793224584855575465046128902L, 0.0L),
+#endif
+    TEST_c_c (cacos, 0x1p-112L, 0.5L, 1.570796326794896619231321691639751269838L, -4.812118250596034474977589134243684231352e-1L),
+    TEST_c_c (cacos, 0x1p-112L, -0.5L, 1.570796326794896619231321691639751269838L, 4.812118250596034474977589134243684231352e-1L),
+    TEST_c_c (cacos, -0x1p-112L, 0.5L, 1.570796326794896619231321691639751614359L, -4.812118250596034474977589134243684231352e-1L),
+    TEST_c_c (cacos, -0x1p-112L, -0.5L, 1.570796326794896619231321691639751614359L, 4.812118250596034474977589134243684231352e-1L),
+    TEST_c_c (cacos, 0.5L, 0x1p-112L, 1.047197551196597746154214461093167628066L, -2.223872343664663196047610660420739543258e-34L),
+    TEST_c_c (cacos, -0.5L, 0x1p-112L, 2.094395102393195492308428922186335256131L, -2.223872343664663196047610660420739543258e-34L),
+    TEST_c_c (cacos, 0.5L, -0x1p-112L, 1.047197551196597746154214461093167628066L, 2.223872343664663196047610660420739543258e-34L),
+    TEST_c_c (cacos, -0.5L, -0x1p-112L, 2.094395102393195492308428922186335256131L, 2.223872343664663196047610660420739543258e-34L),
+    TEST_c_c (cacos, 0x1p-112L, 0x1p-112L, 1.570796326794896619231321691639751249506L, -1.925929944387235853055977942584927318538e-34L),
+    TEST_c_c (cacos, 0x1p-112L, -0x1p-112L, 1.570796326794896619231321691639751249506L, 1.925929944387235853055977942584927318538e-34L),
+    TEST_c_c (cacos, -0x1p-112L, 0x1p-112L, 1.570796326794896619231321691639751634692L, -1.925929944387235853055977942584927318538e-34L),
+    TEST_c_c (cacos, -0x1p-112L, -0x1p-112L, 1.570796326794896619231321691639751634692L, 1.925929944387235853055977942584927318538e-34L),
+#if defined TEST_LDOUBLE && LDBL_MIN_EXP <= -16381
+    TEST_c_c (cacos, 0x1.fp-16385L, 0x1p-112L, 1.570796326794896619231321691639751442099L, -1.925929944387235853055977942584927318538e-34L),
+    TEST_c_c (cacos, 0x1.fp-16385L, -0x1p-112L, 1.570796326794896619231321691639751442099L, 1.925929944387235853055977942584927318538e-34L),
+    TEST_c_c (cacos, -0x1.fp-16385L, 0x1p-112L, 1.570796326794896619231321691639751442099L, -1.925929944387235853055977942584927318538e-34L),
+    TEST_c_c (cacos, -0x1.fp-16385L, -0x1p-112L, 1.570796326794896619231321691639751442099L, 1.925929944387235853055977942584927318538e-34L),
+    TEST_c_c (cacos, 0x1p-112L, 0x1.fp-16385L, 1.570796326794896619231321691639751249506L, -8.142593549724601460479922838826119584417e-4933L, UNDERFLOW_EXCEPTION),
+    TEST_c_c (cacos, -0x1p-112L, 0x1.fp-16385L, 1.570796326794896619231321691639751634692L, -8.142593549724601460479922838826119584417e-4933L, UNDERFLOW_EXCEPTION),
+    TEST_c_c (cacos, 0x1p-112L, -0x1.fp-16385L, 1.570796326794896619231321691639751249506L, 8.142593549724601460479922838826119584417e-4933L, UNDERFLOW_EXCEPTION),
+    TEST_c_c (cacos, -0x1p-112L, -0x1.fp-16385L, 1.570796326794896619231321691639751634692L, 8.142593549724601460479922838826119584417e-4933L, UNDERFLOW_EXCEPTION),
+#endif
+    TEST_c_c (cacos, 0.0L, 0x1p-112L, 1.570796326794896619231321691639751442099L, -1.925929944387235853055977942584927318538e-34L),
+    TEST_c_c (cacos, 0.0L, -0x1p-112L, 1.570796326794896619231321691639751442099L, 1.925929944387235853055977942584927318538e-34L),
+    TEST_c_c (cacos, -0.0L, 0x1p-112L, 1.570796326794896619231321691639751442099L, -1.925929944387235853055977942584927318538e-34L),
+    TEST_c_c (cacos, -0.0L, -0x1p-112L, 1.570796326794896619231321691639751442099L, 1.925929944387235853055977942584927318538e-34L),
+    TEST_c_c (cacos, 0x1p-112L, 0.0L, 1.570796326794896619231321691639751249506L, -0.0L),
+    TEST_c_c (cacos, -0x1p-112L, 0.0L, 1.570796326794896619231321691639751634692L, -0.0L),
+    TEST_c_c (cacos, 0x1p-112L, -0.0L, 1.570796326794896619231321691639751249506L, 0.0L),
+    TEST_c_c (cacos, -0x1p-112L, -0.0L, 1.570796326794896619231321691639751634692L, 0.0L),
+
+    TEST_c_c (cacos, 0.75L, 1.25L, 1.11752014915610270578240049553777969L, -1.13239363160530819522266333696834467L),
+    TEST_c_c (cacos, -2, -3, 2.1414491111159960199416055713254211L, 1.9833870299165354323470769028940395L),
+    END_DATA (cacos)
+  };
+
 static void
 cacos_test (void)
 {
@@ -1646,689 +2391,687 @@
     return;
 
   START (cacos);
-
-
-  TEST_c_c (cacos, 0, 0, M_PI_2l, minus_zero);
-  TEST_c_c (cacos, minus_zero, 0, M_PI_2l, minus_zero);
-  TEST_c_c (cacos, minus_zero, minus_zero, M_PI_2l, 0.0);
-  TEST_c_c (cacos, 0, minus_zero, M_PI_2l, 0.0);
-

[... 13910 lines stripped ...]
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