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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/fenvbits.h | |
parent | 7799b7b3350fdcadc6dfb8821fb49b7772c96701 (diff) | |
download | glibc-dd33e89fb2693e88ba64e6b947184c5abf70ff00.tar glibc-dd33e89fb2693e88ba64e6b947184c5abf70ff00.tar.gz glibc-dd33e89fb2693e88ba64e6b947184c5abf70ff00.tar.bz2 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/fenvbits.h')
-rw-r--r-- | sysdeps/m68k/fpu/fenvbits.h | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/sysdeps/m68k/fpu/fenvbits.h b/sysdeps/m68k/fpu/fenvbits.h new file mode 100644 index 0000000000..b653b1aafd --- /dev/null +++ b/sysdeps/m68k/fpu/fenvbits.h @@ -0,0 +1,80 @@ +/* Copyright (C) 1997 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + 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. */ + +/* This file should never be included directly. */ + +#ifndef _FENVBITS_H +#define _FENVBITS_H 1 + +/* Define bits representing the exception. We use the bit positions of + the appropriate bits in the FPSR Accrued Exception Byte. */ +enum + { + FE_INEXACT = 1 << 3, +#define FE_INEXACT FE_INEXACT + FE_DIVBYZERO = 1 << 4, +#define FE_DIVBYZERO FE_DIVBYZERO + FE_UNDERFLOW = 1 << 5, +#define FE_UNDERFLOW FE_UNDERFLOW + FE_OVERFLOW = 1 << 6, +#define FE_OVERFLOW FE_OVERFLOW + FE_INVALID = 1 << 7 +#define FE_INVALID FE_INVALID + }; + +#define FE_ALL_EXCEPT \ + (FE_INEXACT | FE_DIVBYZERO | FE_UNDERFLOW | FE_OVERFLOW | FE_INVALID) + +/* The m68k FPU supports all of the four defined rounding modes. We use + the bit positions in the FPCR Mode Control Byte as the values for the + appropriate macros. */ +enum + { + FE_TONEAREST = 0, +#define FE_TONEAREST FE_TONEAREST + FE_TOWARDSZERO = 1 << 4, +#define FE_TOWARDSZERO FE_TOWARDSZERO + FE_DOWNWARD = 2 << 4, +#define FE_DOWNWARD FE_DOWNWARD + FE_UPWARD = 3 << 4 +#define FE_UPWARD FE_UPWARD + }; + + +/* Type representing exception flags. */ +typedef unsigned int fexcept_t; + + +/* Type representing floating-point environment. This structure + corresponds to the layout of the block written by `fmovem'. */ +typedef struct + { + fexcept_t control_register; + fexcept_t status_register; + } +fenv_t; + +/* If the default argument is used we use this value. */ +#define FE_DFL_ENV ((fenv_t *) -1) + +#ifdef __USE_GNU +/* Floating-point environment where none of the exceptions are masked. */ +# define FE_NOMASK_ENV ((fenv_t *) -2) +#endif + +#endif /* fenvbits.h */ |