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author | H.J. Lu <hjl.tools@gmail.com> | 2012-06-06 10:13:19 -0700 |
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committer | H.J. Lu <hjl.tools@gmail.com> | 2012-06-06 10:13:19 -0700 |
commit | c08010c7cdea229bc3b27ecf42855d32daffd71e (patch) | |
tree | d72c9b4e9d966679ced05a0b2e922b3b3fbcc2a5 /sysdeps/i386/fpu/bits/fenv.h | |
parent | a728a38fb658f8b2f0acbea8a586db8bd054f3fe (diff) | |
download | glibc-c08010c7cdea229bc3b27ecf42855d32daffd71e.tar.gz glibc-c08010c7cdea229bc3b27ecf42855d32daffd71e.tar.xz glibc-c08010c7cdea229bc3b27ecf42855d32daffd71e.zip |
Use x86_64 fpu/bits/fenv.h for i386 and x86_64
Diffstat (limited to 'sysdeps/i386/fpu/bits/fenv.h')
-rw-r--r-- | sysdeps/i386/fpu/bits/fenv.h | 137 |
1 files changed, 0 insertions, 137 deletions
diff --git a/sysdeps/i386/fpu/bits/fenv.h b/sysdeps/i386/fpu/bits/fenv.h deleted file mode 100644 index e71ceb7b3d..0000000000 --- a/sysdeps/i386/fpu/bits/fenv.h +++ /dev/null @@ -1,137 +0,0 @@ -/* Copyright (C) 1997-2012 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, see - <http://www.gnu.org/licenses/>. */ - -#ifndef _FENV_H -# error "Never use <bits/fenv.h> directly; include <fenv.h> instead." -#endif - - -/* Define bits representing the exception. We use the bit positions - of the appropriate bits in the FPU control word. */ -enum - { - FE_INVALID = 0x01, -#define FE_INVALID FE_INVALID - __FE_DENORM = 0x02, - FE_DIVBYZERO = 0x04, -#define FE_DIVBYZERO FE_DIVBYZERO - FE_OVERFLOW = 0x08, -#define FE_OVERFLOW FE_OVERFLOW - FE_UNDERFLOW = 0x10, -#define FE_UNDERFLOW FE_UNDERFLOW - FE_INEXACT = 0x20 -#define FE_INEXACT FE_INEXACT - }; - -#define FE_ALL_EXCEPT \ - (FE_INEXACT | FE_DIVBYZERO | FE_UNDERFLOW | FE_OVERFLOW | FE_INVALID) - -/* The ix87 FPU supports all of the four defined rounding modes. We - use again the bit positions in the FPU control word as the values - for the appropriate macros. */ -enum - { - FE_TONEAREST = 0, -#define FE_TONEAREST FE_TONEAREST - FE_DOWNWARD = 0x400, -#define FE_DOWNWARD FE_DOWNWARD - FE_UPWARD = 0x800, -#define FE_UPWARD FE_UPWARD - FE_TOWARDZERO = 0xc00 -#define FE_TOWARDZERO FE_TOWARDZERO - }; - - -/* Type representing exception flags. */ -typedef unsigned short int fexcept_t; - - -/* Type representing floating-point environment. This function corresponds - to the layout of the block written by the `fstenv'. */ -typedef struct - { - unsigned short int __control_word; - unsigned short int __unused1; - unsigned short int __status_word; - unsigned short int __unused2; - unsigned short int __tags; - unsigned short int __unused3; - unsigned int __eip; - unsigned short int __cs_selector; - unsigned int __opcode:11; - unsigned int __unused4:5; - unsigned int __data_offset; - unsigned short int __data_selector; - unsigned short int __unused5; - } -fenv_t; - -/* If the default argument is used we use this value. */ -#define FE_DFL_ENV ((const fenv_t *) -1) - -#ifdef __USE_GNU -/* Floating-point environment where none of the exception is masked. */ -# define FE_NOMASK_ENV ((const fenv_t *) -2) -#endif - - -#ifdef __USE_EXTERN_INLINES -__BEGIN_DECLS - -/* Optimized versions. */ -extern int __REDIRECT_NTH (__feraiseexcept_renamed, (int), feraiseexcept); -__extern_inline int -__NTH (feraiseexcept (int __excepts)) -{ - if (__builtin_constant_p (__excepts) - && (__excepts & ~(FE_INVALID | FE_DIVBYZERO)) == 0) - { - if ((FE_INVALID & __excepts) != 0) - { - /* One example of a invalid operation is 0.0 / 0.0. */ - float __f = 0.0; - -# ifdef __SSE_MATH__ - __asm__ __volatile__ ("divss %0, %0 " : : "x" (__f)); -# else - __asm__ __volatile__ ("fdiv %%st, %%st(0); fwait" - : "=t" (__f) : "0" (__f)); -# endif - (void) &__f; - } - if ((FE_DIVBYZERO & __excepts) != 0) - { - float __f = 1.0; - float __g = 0.0; - -# ifdef __SSE_MATH__ - __asm__ __volatile__ ("divss %1, %0" : : "x" (__f), "x" (__g)); -# else - __asm__ __volatile__ ("fdivp %%st, %%st(1); fwait" - : "=t" (__f) : "0" (__f), "u" (__g) : "st(1)"); -# endif - (void) &__f; - } - - return 0; - } - - return __feraiseexcept_renamed (__excepts); -} - -__END_DECLS -#endif |