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[BZ #3451]

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* sysdeps/i386/fpu/bits/mathinline.h (floor): Make rounding mode
	change atomic.
	(ceil): Likewise.
This commit is contained in:
Jakub Jelinek 2007-01-12 15:31:04 +00:00
parent eef3503f0c
commit 54f6949314
2 changed files with 36 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.
2006-11-09 Ulrich Drepper <drepper@redhat.com>
* sysdeps/unix/sysv/linux/x86_64/sysconf.c (intel_check_word): Add

44
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 +529,38 @@ __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 %3\n\t" \
"movzwl %3, %1\n\t" \
"andl $0xf3ff, %1\n\t" \
"orl $0x0400, %1\n\t" /* rounding down */ \
"movw %w1, %2\n\t" \
"fldcw %2\n\t" \
"frndint\n\t" \
"fldcw %3" \
: "=t" (__value), "=&q" (__ignore), "=m" (__cwtmp), \
"=m" (__cw) \
: "0" (__x)); \
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 %3\n\t" \
"movzwl %3, %1\n\t" \
"andl $0xf3ff, %1\n\t" \
"orl $0x0800, %1\n\t" /* rounding up */ \
"movw %w1, %2\n\t" \
"fldcw %2\n\t" \
"frndint\n\t" \
"fldcw %3" \
: "=t" (__value), "=&q" (__ignore), "=m" (__cwtmp), \
"=m" (__cw) \
: "0" (__x)); \
return __value)
#ifdef __FAST_MATH__