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author | Ulrich Drepper <drepper@redhat.com> | 1997-04-17 15:10:04 +0000 |
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committer | Ulrich Drepper <drepper@redhat.com> | 1997-04-17 15:10:04 +0000 |
commit | dd33e89fb2693e88ba64e6b947184c5abf70ff00 (patch) | |
tree | 3a621cf04df476aa6dd7905c41e77e8133baae3e /sysdeps/m68k/fpu/fraiseexcpt.c | |
parent | 7799b7b3350fdcadc6dfb8821fb49b7772c96701 (diff) | |
download | glibc-dd33e89fb2693e88ba64e6b947184c5abf70ff00.tar.gz glibc-dd33e89fb2693e88ba64e6b947184c5abf70ff00.tar.xz glibc-dd33e89fb2693e88ba64e6b947184c5abf70ff00.zip |
Update.
1997-04-17 16:55 Ulrich Drepper <drepper@cygnus.com> * misc/libgen.h: Change prototype for of basename to XPG variant. * stdlib/Makefile (routines): Add xpg_basename. * stdlib/basename.c: New file. * string/string.h: Don't declare basename function if basename macro is available. 1997-04-16 17:33 Miles Bader <miles@gnu.ai.mit.edu> * login/utmp_file.c (proc_utmp_eq): Only use ut_id field if valid. 1997-04-15 12:47 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * sysdeps/m68k/fpu/fclrexcpt.c: New file. * sysdeps/m68k/fpu/fenvbits.h: New file. * sysdeps/m68k/fpu/fegetenv.c: New file. * sysdeps/m68k/fpu/fegetround.c: New file. * sysdeps/m68k/fpu/fesetenv.c: New file. * sysdeps/m68k/fpu/fesetround.c: New file. * sysdeps/m68k/fpu/feupdateenv.c: New file. * sysdeps/m68k/fpu/fgetexcptflg.c: New file. * sysdeps/m68k/fpu/fraiseexcpt.c: New file. * sysdeps/m68k/fpu/fsetexcptflg.c: New file. * sysdeps/m68k/fpu/ftestexcept.c: New file. * sysdeps/m68k/fpu/mathbits.h: New file. * sysdeps/m68k/fpu/s_remquo.c: New file. * sysdeps/m68k/fpu/s_remquol.c: New file. * sysdeps/m68k/fpu/s_remquof.c: New file. * sysdeps/libm-ieee754/s_roundl.c: Restore integer bit when mantissa overflows into exponent. Fix priority of >> vs +. * math/libm-test.c (basic_tests): Use the appropriate isnan and isinf function to test the value of the nan function. 1997-04-15 13:40 Ulrich Drepper <drepper@cygnus.com> * sysdeps/libm-i387/s_finite.S: Fix typo. * sysdeps/i386/fpu/__math.h: Add optimized versions of isgreater, isgreaterequal, isless, islessequal, islessgreater, and isunordered.
Diffstat (limited to 'sysdeps/m68k/fpu/fraiseexcpt.c')
-rw-r--r-- | sysdeps/m68k/fpu/fraiseexcpt.c | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/sysdeps/m68k/fpu/fraiseexcpt.c b/sysdeps/m68k/fpu/fraiseexcpt.c new file mode 100644 index 0000000000..b6ff82760d --- /dev/null +++ b/sysdeps/m68k/fpu/fraiseexcpt.c @@ -0,0 +1,74 @@ +/* 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 = 0.0 * HUGE_VAL; + /* Now force the exception. */ + __asm__ __volatile__ ("fnop" : : "f" (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 * LDBL_MAX; + /* Now force the exception. */ + __asm__ __volatile__ ("fnop" : : "f" (d)); + } + + /* Next: underflow. */ + if (excepts & FE_UNDERFLOW) + { + long double d = LDBL_MIN / 16.0; + /* Now force the exception. */ + __asm__ __volatile__ ("fnop" : : "f" (d)); + } + + /* Last: inexact. */ + if (excepts & FE_INEXACT) + { + long double d1, d2 = 1.0; + __asm__ __volatile__ ("fmovecr %#0,%0\n\t" + "fdiv%.x %1,%0\n\t" + "fnop" + : "=&f" (d1) : "f" (d2)); + } +} |