diff options
author | Ulrich Drepper <drepper@redhat.com> | 2000-10-15 03:37:33 +0000 |
---|---|---|
committer | Ulrich Drepper <drepper@redhat.com> | 2000-10-15 03:37:33 +0000 |
commit | fb0f005337cb31a747875bbca3006810d09ef25f (patch) | |
tree | d85759e889d1ef4911286e342680f17a780b5ebe | |
parent | 2db1ce26dac360a878ce00879916ef52d3ab3e91 (diff) | |
download | glibc-fb0f005337cb31a747875bbca3006810d09ef25f.tar glibc-fb0f005337cb31a747875bbca3006810d09ef25f.tar.gz glibc-fb0f005337cb31a747875bbca3006810d09ef25f.tar.bz2 glibc-fb0f005337cb31a747875bbca3006810d09ef25f.zip |
Linux/HPPA specific fenv definitions.
-rw-r--r-- | sysdeps/hppa/fpu/bits/fenv.h | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/sysdeps/hppa/fpu/bits/fenv.h b/sysdeps/hppa/fpu/bits/fenv.h new file mode 100644 index 0000000000..7d25b9947c --- /dev/null +++ b/sysdeps/hppa/fpu/bits/fenv.h @@ -0,0 +1,78 @@ +/* Copyright (C) 2000 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by David Huggins-Daines <dhd@debian.org> + + 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. */ + +#ifndef _FENV_H +# error "Never use <bits/fenv.h> directly; include <fenv.h> instead." +#endif + +/* Define bits representing the exception. We use the values of the + appropriate enable bits in the FPU status word (which, + coincidentally, are the same as the flag bits, but shifted right by + 27 bits). */ +enum +{ + FE_INVALID = 1<<4, /* V */ +#define FE_INVALID FE_INVALID + FE_DIVBYZERO = 1<<3, /* Z */ +#define FE_DIVBYZERO FE_DIVBYZERO + FE_OVERFLOW = 1<<2, /* O */ +#define FE_OVERFLOW FE_OVERFLOW + FE_UNDERFLOW = 1<<1, /* U */ +#define FE_UNDERFLOW FE_UNDERFLOW + FE_INEXACT = 1<<0, /* I */ +#define FE_INEXACT FE_INEXACT +}; + +#define FE_ALL_EXCEPT \ + (FE_INEXACT | FE_DIVBYZERO | FE_UNDERFLOW | FE_OVERFLOW | FE_INVALID) + +/* The PA-RISC FPU supports all of the four defined rounding modes. + We use the values of the RM field in the floating point status + register for the appropriate macros. */ +enum + { + FE_TONEAREST = 0 << 9, +#define FE_TONEAREST FE_TONEAREST + FE_TOWARDZERO = 1 << 9, +#define FE_TOWARDZERO FE_TOWARDZERO + FE_UPWARD = 2 << 9, +#define FE_UPWARD FE_UPWARD + FE_DOWNWARD = 3 << 9, +#define FE_DOWNWARD FE_DOWNWARD + }; + +/* Type representing exception flags. */ +typedef unsigned int fexcept_t; + +/* Type representing floating-point environment. This structure + corresponds to the layout of the status and exception words in the + register file. */ +typedef struct +{ + unsigned int __status_word; + unsigned int __exception[7]; +} 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 |