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
1.6 KiB
C
41 lines
1.6 KiB
C
/* Set floating-point environment exception handling.
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Copyright (C) 1997, 1999 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include <fenv.h>
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#include <math.h>
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void
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fesetexceptflag (const fexcept_t *flagp, int excepts)
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{
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fenv_t temp;
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/* Get the current environment. We have to do this since we cannot
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separately set the status word. */
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__asm__ ("fnstenv %0" : "=m" (*&temp));
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temp.__status_word &= ~(excepts & FE_ALL_EXCEPT);
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temp.__status_word |= *flagp & excepts & FE_ALL_EXCEPT;
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/* Store the new status word (along with the rest of the environment.
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Possibly new exceptions are set but they won't get executed unless
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the next floating-point instruction. */
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__asm__ ("fldenv %0" : : "m" (*&temp));
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}
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