mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-17 02:20:10 +00:00
33d1a2c5b8
1999-05-23 Ulrich Drepper <drepper@cygnus.com> * sysdeps/alpha/fpu/bits/fenv.h: Pretty print. * sysdeps/sparc/sparc64/fpu/bits/fenv.h: Remove unneeded #if. 1999-05-22 Andreas Schwab <schwab@issan.cs.uni-dortmund.de> * sysdeps/m68k/fpu/bits/fenv.h (fenv_t): Prepend __ to member names to protect from user's macro namespace. * sysdeps/arm/fpu/bits/fenv.h (fenv_t): Likewise. * sysdeps/generic/bits/fenv.h (fexcept_t, fenv_t): Likewise. * sysdeps/i386/fpu/bits/fenv.h (fenv_t): Likewise. * sysdeps/mips/bits/fenv.h (fenv_t): Likewise. * sysdeps/m68k/fpu/feholdexcpt.c, sysdeps/m68k/fpu/fesetenv.c: Adapted. * sysdeps/arm/fpu/fegetenv.c, sysdeps/arm/fpu/feholdexcpt.c, sysdeps/arm/fpu/fesetenv.c: Likewise. * sysdeps/i386/fpu/fclrexcpt.c, sysdeps/i386/fpu/feholdexcpt.c, sysdeps/i386/fpu/fesetenv.c, sysdeps/i386/fpu/fraiseexcpt.c, sysdeps/i386/fpu/fsetexcptflg.c: Likewise. * sysdeps/mips/fesetenv.c: Likewise.
41 lines
1.5 KiB
C
41 lines
1.5 KiB
C
/* Clear given exceptions in current floating-point environment.
|
|
Copyright (C) 1997, 1999 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Library General Public License as
|
|
published by the Free Software Foundation; either version 2 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
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with the GNU C Library; see the file COPYING.LIB. If not,
|
|
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
Boston, MA 02111-1307, USA. */
|
|
|
|
#include <fenv.h>
|
|
|
|
void
|
|
feclearexcept (int excepts)
|
|
{
|
|
fenv_t temp;
|
|
|
|
/* Mask out unsupported bits/exceptions. */
|
|
excepts &= FE_ALL_EXCEPT;
|
|
|
|
/* Bah, we have to clear selected exceptions. Since there is no
|
|
`fldsw' instruction we have to do it the hard way. */
|
|
__asm__ ("fnstenv %0" : "=m" (*&temp));
|
|
|
|
/* Clear the relevant bits. */
|
|
temp.__status_word &= excepts ^ FE_ALL_EXCEPT;
|
|
|
|
/* Put the new data in effect. */
|
|
__asm__ ("fldenv %0" : : "m" (*&temp));
|
|
}
|