[commits] r8884 - in /fsf/trunk/libc: ChangeLog sysdeps/ieee754/dbl-64/wordsize-64/s_isinf.c sysdeps/ieee754/dbl-64/wordsize-64/s_isnan.c

[eglibc@xxxxxxxxxx]

Author: eglibc
Date: Thu Aug 27 00:04:45 2009
New Revision: 8884

Log:
Import glibc-mainline for 2009-08-27

Added:
    fsf/trunk/libc/sysdeps/ieee754/dbl-64/wordsize-64/s_isinf.c
    fsf/trunk/libc/sysdeps/ieee754/dbl-64/wordsize-64/s_isnan.c
Modified:
    fsf/trunk/libc/ChangeLog

Modified: fsf/trunk/libc/ChangeLog
==============================================================================
--- fsf/trunk/libc/ChangeLog (original)
+++ fsf/trunk/libc/ChangeLog Thu Aug 27 00:04:45 2009
@@ -1,3 +1,9 @@
+2009-08-26  Ulrich Drepper  <drepper@xxxxxxxxxx>
+
+	* sysdeps/ieee754/dbl-64/wordsize-64/s_isinf.c: New file.
+
+	* sysdeps/ieee754/dbl-64/wordsize-64/s_isnan.c: New file.
+
 2009-08-25  Ulrich Drepper  <drepper@xxxxxxxxxx>
 
 	* sysdeps/ieee754/dbl-64/wordsize-64/s_lround.c: Add llround aliases.

Added: fsf/trunk/libc/sysdeps/ieee754/dbl-64/wordsize-64/s_isinf.c
==============================================================================
--- fsf/trunk/libc/sysdeps/ieee754/dbl-64/wordsize-64/s_isinf.c (added)
+++ fsf/trunk/libc/sysdeps/ieee754/dbl-64/wordsize-64/s_isinf.c Thu Aug 27 00:04:45 2009
@@ -1,0 +1,30 @@
+/*
+ * Written by J.T. Conklin <jtc@xxxxxxxxxx>.
+ * Changed to return -1 for -Inf by Ulrich Drepper <drepper@xxxxxxxxxx>.
+ * Public domain.
+ */
+
+/*
+ * isinf(x) returns 1 is x is inf, -1 if x is -inf, else 0;
+ * no branching!
+ */
+
+#include "math.h"
+#include "math_private.h"
+
+int
+__isinf (double x)
+{
+	int64_t ix;
+	EXTRACT_WORDS64(ix,x);
+	int64_t t = ix & UINT64_C(0x7fffffffffffffff);
+	t ^= UINT64_C(0x7ff0000000000000);
+	t |= -t;
+	return ~(t >> 63) & (ix >> 62);
+}
+hidden_def (__isinf)
+weak_alias (__isinf, isinf)
+#ifdef NO_LONG_DOUBLE
+strong_alias (__isinf, __isinfl)
+weak_alias (__isinf, isinfl)
+#endif

Added: fsf/trunk/libc/sysdeps/ieee754/dbl-64/wordsize-64/s_isnan.c
==============================================================================
--- fsf/trunk/libc/sysdeps/ieee754/dbl-64/wordsize-64/s_isnan.c (added)
+++ fsf/trunk/libc/sysdeps/ieee754/dbl-64/wordsize-64/s_isnan.c Thu Aug 27 00:04:45 2009
@@ -1,0 +1,39 @@
+/* @(#)s_isnan.c 5.1 93/09/24 */
+/*
+ * ====================================================
+ * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
+ *
+ * Developed at SunPro, a Sun Microsystems, Inc. business.
+ * Permission to use, copy, modify, and distribute this
+ * software is freely granted, provided that this notice
+ * is preserved.
+ * ====================================================
+ */
+
+/*
+ * isnan(x) returns 1 is x is nan, else 0;
+ * no branching!
+ */
+
+#include "math.h"
+#include "math_private.h"
+
+#ifdef __STDC__
+	int __isnan(double x)
+#else
+	int __isnan(x)
+	double x;
+#endif
+{
+	int64_t hx;
+	EXTRACT_WORDS64(hx,x);
+	hx &= UINT64_C(0x7fffffffffffffff);
+	hx = UINT64_C(0x7ff0000000000000) - hx;
+	return (int)(((uint64_t)hx)>>63);
+}
+hidden_def (__isnan)
+weak_alias (__isnan, isnan)
+#ifdef NO_LONG_DOUBLE
+strong_alias (__isnan, __isnanl)
+weak_alias (__isnan, isnanl)
+#endif