glibc/sysdeps/m68k/fpu/feholdexcpt.c
Ulrich Drepper 8a94dfe44e Update.
* sysdeps/alpha/fpu/feholdexcpt.c: Correct return value according to
	the standard.
	* sysdeps/alpha/fpu/fesetround.c: Likewise.
	* sysdeps/arm/fpu/feholdexcpt.c: Likewise.
	* sysdeps/arm/fpu/fesetround.c: Likewise.
	* sysdeps/generic/feholdexcpt.c: Likewise.
	* sysdeps/generic/fesetround.c: Likewise.
	* sysdeps/i386/fpu/feholdexcpt.c: Likewise.
	* sysdeps/i386/fpu/fesetround.c: Likewise.
	* sysdeps/m68k/fpu/feholdexcpt.c: Likewise.
	* sysdeps/m68k/fpu/fesetround.c: Likewise.
	* sysdeps/mips/fpu/fesetround.c: Likewise.
	* sysdeps/powerpc/fpu/feholdexcpt.c: Likewise.
	* sysdeps/powerpc/fpu/fesetround.c: Likewise.
	* sysdeps/sparc/fpu/feholdexcpt.c: Likewise.
	* sysdeps/sparc/fpu/fesetround.c: Likewise.
	Patch by Miloslav Trmac <mitr@volny.cz>.
2000-01-31 08:11:53 +00:00

40 lines
1.5 KiB
C

/* Store current floating-point environment and clear exceptions.
Copyright (C) 1997, 1999 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
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>
int
feholdexcept (fenv_t *envp)
{
fexcept_t fpcr, fpsr;
/* Store the environment. */
__asm__ ("fmovem%.l %/fpcr/%/fpsr/%/fpiar,%0" : "=m" (*envp));
/* Now clear all exceptions. */
fpsr = envp->__status_register & ~FE_ALL_EXCEPT;
__asm__ __volatile__ ("fmove%.l %0,%/fpsr" : : "dm" (fpsr));
/* And set all exceptions to non-stop. */
fpcr = envp->__control_register & ~(FE_ALL_EXCEPT << 6);
__asm__ __volatile__ ("fmove%.l %0,%!" : : "dm" (fpcr));
return 0;
}