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[BZ #3451]

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2006-11-10  Ulrich Drepper  <drepper@redhat.com>
	[BZ #3451]
	* sysdeps/i386/fpu/bits/mathinline.h (floor): Make rounding mode
	change atomic.
	(ceil): Likewise.
This commit is contained in:
Ulrich Drepper 2006-11-10 17:04:58 +00:00
parent 52a33795d3
commit 5c2af13445
2 changed files with 34 additions and 15 deletions
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7
ChangeLog
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@ -1,3 +1,10 @@
2006-11-10 Ulrich Drepper <drepper@redhat.com>
[BZ #3451]
* sysdeps/i386/fpu/bits/mathinline.h (floor): Make rounding mode
change atomic.
(ceil): Likewise.
2006-11-10 Jakub Jelinek <jakub@redhat.com>
* string/strxfrm_l.c (STRXFRM): Fix trailing \1 optimization

42
sysdeps/i386/fpu/bits/mathinline.h
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@ -1,5 +1,5 @@
/* Inline math functions for i387.
Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004
Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004, 2006
Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by John C. Bowman <bowman@math.ualberta.ca>, 1995.
@ -529,24 +529,36 @@ __inline_mathcodeNP (tanh, __x, \
__inline_mathcodeNP (floor, __x, \
register long double __value; \
__volatile unsigned short int __cw; \
__volatile unsigned short int __cwtmp; \
__asm __volatile ("fnstcw %0" : "=m" (__cw)); \
__cwtmp = (__cw & 0xf3ff) | 0x0400; /* rounding down */ \
__asm __volatile ("fldcw %0" : : "m" (__cwtmp)); \
__asm __volatile ("frndint" : "=t" (__value) : "0" (__x)); \
__asm __volatile ("fldcw %0" : : "m" (__cw)); \
register int __ignore; \
unsigned short int __cw; \
unsigned short int __cwtmp; \
__asm __volatile ("fnstcw %4\n\t" \
"movzwl %4, %1\n\t" \
"andl $0xf3ff, %1\n\t" \
"orl $0x0400, %1\n\t" /* rounding down */ \
"movw %1, %3\n\t" \
"fldcw %3\n\t" \
"frndint\n\t" \
"fldcw %4" \
: "=t" (__value), "=&q" (__ignore) \
: "0" (__x), "m" (__cwtmp), "m" (__cw)); \
return __value)
__inline_mathcodeNP (ceil, __x, \
register long double __value; \
__volatile unsigned short int __cw; \
__volatile unsigned short int __cwtmp; \
__asm __volatile ("fnstcw %0" : "=m" (__cw)); \
__cwtmp = (__cw & 0xf3ff) | 0x0800; /* rounding up */ \
__asm __volatile ("fldcw %0" : : "m" (__cwtmp)); \
__asm __volatile ("frndint" : "=t" (__value) : "0" (__x)); \
__asm __volatile ("fldcw %0" : : "m" (__cw)); \
register int __ignore; \
unsigned short int __cw; \
unsigned short int __cwtmp; \
__asm __volatile ("fnstcw %4\n\t" \
"movzwl %4, %1\n\t" \
"andl $0xf3ff, %1\n\t" \
"orl $0x0800, %1\n\t" /* rounding up */ \
"movw %1, %3\n\t" \
"fldcw %3\n\t" \
"frndint\n\t" \
"fldcw %4" \
: "=t" (__value), "=&q" (__ignore) \
: "0" (__x), "m" (__cwtmp), "m" (__cw)); \
return __value)
#ifdef __FAST_MATH__