[patches] Fix ARM bits/mathdef.h

["Joseph S. Myers" <joseph@xxxxxxxxxxxxxxxx>]

No version of ARM hard or soft float has excess precision; all operate
on float values with float arithmetic, and on double values with
double arithmetic.  Thus glibc's default <bits/mathdef.h>, which
defines float_t to be double (so describing a generic system with
excess precision), is incorrect for ARM; in fact
sysdeps/arm/fpu/bits/mathdef.h is correct for all ARM cases, minus a
comment about FPA.

Applied to EGLIBC trunk and 2.5 branch.  Will be submitted for FSF
glibc.

2006-11-09  Joseph Myers  <joseph@xxxxxxxxxxxxxxxx>

	* sysdeps/arm/fpu/bits/mathdef.h: Move to
	sysdeps/arm/bits/mathdef.h.  Remove comment about FPA.

Index: sysdeps/arm/fpu/bits/mathdef.h
===================================================================
--- sysdeps/arm/fpu/bits/mathdef.h	(revision 636)
+++ sysdeps/arm/fpu/bits/mathdef.h	(working copy)
@@ -1,44 +0,0 @@
-/* Copyright (C) 1999, 2000, 2004 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, write to the Free
-   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
-   02111-1307 USA.  */
-
-#if !defined _MATH_H && !defined _COMPLEX_H
-# error "Never use <bits/mathdef.h> directly; include <math.h> instead"
-#endif
-
-#if defined  __USE_ISOC99 && defined _MATH_H && !defined _MATH_H_MATHDEF
-# define _MATH_H_MATHDEF	1
-
-/* GCC does not promote `float' values to `double'.  */
-typedef float float_t;		/* `float' expressions are evaluated as
-				   `float'.  */
-typedef double double_t;	/* `double' expressions are evaluated as
-				   `double'.  */
-
-/* The values returned by `ilogb' for 0 and NaN respectively.  */
-# define FP_ILOGB0	(-2147483647)
-# define FP_ILOGBNAN	(2147483647)
-
-#endif	/* ISO C99 */
-
-#ifndef __NO_LONG_DOUBLE_MATH
-/* Signal that we do not really have a `long double'.  This disables the
-   declaration of all the `long double' function variants.  */
-/* XXX The FPA does support this but the patterns in GCC are currently
-   turned off.  */
-# define __NO_LONG_DOUBLE_MATH	1
-#endif
Index: sysdeps/arm/bits/mathdef.h
===================================================================
--- sysdeps/arm/bits/mathdef.h	(revision 636)
+++ sysdeps/arm/bits/mathdef.h	(working copy)
@@ -1,4 +1,4 @@
-/* Copyright (C) 1999, 2000, 2004 Free Software Foundation, Inc.
+/* Copyright (C) 1999, 2000, 2004, 2006 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -38,7 +38,5 @@
 #ifndef __NO_LONG_DOUBLE_MATH
 /* Signal that we do not really have a `long double'.  This disables the
    declaration of all the `long double' function variants.  */
-/* XXX The FPA does support this but the patterns in GCC are currently
-   turned off.  */
 # define __NO_LONG_DOUBLE_MATH	1
 #endif

-- 
Joseph S. Myers
joseph@xxxxxxxxxxxxxxxx