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Use lrint() for fctiw on x86-64. This is because some glibc use AMD optimized

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math library where floor(), ceil() et al. don't set the inexact flag correctly
This commit is contained in:
gbeauche 2006-07-04 06:59:28 +00:00
parent dc3df920c5
commit dc88ee271d
1 changed files with 33 additions and 0 deletions
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33
SheepShaver/src/kpx_cpu/src/mathlib/mathlib-x86_64.hpp Normal file
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/*
* mathlib-x86_64.hpp - Math library wrapper, x86-64 specific code
* Code largely derived from GNU libc
*
* Kheperix (C) 2003-2005 Gwenole Beauchesne
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef MATHLIB_X86_64_H
#define MATHLIB_X86_64_H
// 7.12.9.5 The lrint and llrint functions
#if defined(__GNUC__)
#define mathlib_lrint(x) \
({ long int __result; \
__asm__ __volatile__ ("cvtsd2si %1, %0" : "=r" (__result) : "x" (x)); \
__result; })
#endif
#endif /* MATHLIB_X86_64_H */