glibc/sysdeps/m68k/fpu/fraiseexcpt.c
Ulrich Drepper 5649a1d60d Update.
1997-06-04 20:57  Ulrich Drepper  <drepper@cygnus.com>

	* manual/string.texi: Add comments to discourage use of index and
	rindex.
	(strtok, strsep): Apply function on copy of the strings in example.
	(l64a): Add example.

	* posix/unistd.h: Correct value for _POSIX_VERSION.

	* sunrpc/Makefile (defines): Remove definition.

	* sysdeps/ieee754/nan.h: Correct typo.

1997-06-04 10:50  Fila Kolodny  <fila@ibi.com>

	* posix/unistd.h: Add definition of __fchdir corresponding to fchdir.

	* login/utmp_daemon.c: Correct location of utmpd.h.

1997-06-03 19:16  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* Makerules: Rename $(common-objpfx)distinfo-$(subdir) to
	$(objpfx)distinfo.
	* rpm/Makefile (distinfo): Adapted.

1997-06-03 18:32  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* rpm/Makefile (install-slib): Collect shared libraries here
	instead of in install-lib, including libc.
	(instvars): Add slib.

1997-06-03 18:23  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* login/Makefile (libutil-routines): Add updwtmp.

1997-06-03 16:16  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* monetary.h: New file, needed for localedata/tst-fmon.c.

1997-06-02 20:31  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* math/libm-test.c (cpow_test): Add epsilon for long double in
	test for 2^10.
	(identities): Add epsilon for float in second identity test.

	* sysdeps/m68k/huge_val.h: Change GCC's HUGE_VAL{,F,L} to use
	DI and SI mode integers instead of bytes.  Fix value of HUGE_VALL.

	* sysdeps/m68k/nan.h: New file.

	* sysdeps/m68k/fpu/__math.h (isgreater, isgreaterequal, isless,
	islessequal, islessgreater, isunordered): Fix assembler syntax.

	* sysdeps/m68k/fpu/fraiseexcpt.c: Do it right so that gcc doesn't
	optimize out the operations.

	* sysdeps/libm-ieee754/s_nan.c: Use NaN macro instead of static
	constant.
	* sysdeps/libm-ieee754/s_nanf.c: Likewise.
	* sysdeps/libm-ieee754/s_nanl.c: Likewise.

	* math/carg.c [NO_LONG_DOUBLE]: Add alias for long double
	function.
	* sysdeps/libm-ieee754/s_erf.c: Likewise.
	* sysdeps/libm-ieee754/s_fdim.c: Likewise.
	* sysdeps/libm-ieee754/s_fmax.c: Likewise.
	* sysdeps/libm-ieee754/s_fmin.c: Likewise.
	* sysdeps/libm-ieee754/s_log2.c: Likewise.
	* sysdeps/libm-ieee754/s_nan.c: Likewise.
	* sysdeps/libm-ieee754/s_remquo.c: Likewise.
1997-06-04 19:05:38 +00:00

69 lines
2.2 KiB
C

/* Raise given exceptions.
Copyright (C) 1997 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>
#include <math.h>
void
feraiseexcept (int excepts)
{
/* Raise exceptions represented by EXCEPTS. But we must raise only one
signal at a time. It is important that if the overflow/underflow
exception and the divide by zero exception are given at the same
time, the overflow/underflow exception follows the divide by zero
exception. */
/* First: invalid exception. */
if (excepts & FE_INVALID)
{
/* One example of a invalid operation is 0 * Infinity. */
double d = HUGE_VAL;
__asm__ __volatile__ ("fmul%.s %#0r0,%0; fnop" : "=f" (d) : "0" (d));
}
/* Next: division by zero. */
if (excepts & FE_DIVBYZERO)
{
double d = 1.0;
__asm__ __volatile__ ("fdiv%.s %#0r0,%0; fnop" : "=f" (d) : "0" (d));
}
/* Next: overflow. */
if (excepts & FE_OVERFLOW)
{
long double d = LDBL_MAX;
__asm__ __volatile__ ("fmul%.x %0,%0; fnop" : "=f" (d) : "0" (d));
}
/* Next: underflow. */
if (excepts & FE_UNDERFLOW)
{
long double d = LDBL_MIN;
__asm__ __volatile__ ("fdiv%.s %#0r16,%0; fnop" : "=f" (d) : "0" (d));
}
/* Last: inexact. */
if (excepts & FE_INEXACT)
{
long double d = 1.0;
__asm__ __volatile__ ("fdiv%.s %#0r3,%0; fnop" : "=f" (d) : "0" (d));
}
}