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Diffstat (limited to 'sysdeps/generic/bits/fenv.h')
-rw-r--r-- | sysdeps/generic/bits/fenv.h | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/sysdeps/generic/bits/fenv.h b/sysdeps/generic/bits/fenv.h new file mode 100644 index 0000000..f45deb0 --- /dev/null +++ b/sysdeps/generic/bits/fenv.h @@ -0,0 +1,61 @@ +/* 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. */ + +#ifndef _FENV_H +#error "Never use <bits/fenv.h> directly; include <fenv.h> instead." +#endif + + +/* Here should be the exception be defined: + FE_INVALID + FE_DIVBYZERO + FE_OVERFLOW + FE_UNDERFLOW + FE_INEXACT + We define no macro which signals no exception is supported. */ + +#define FE_ALL_EXCEPT 0 + + +/* Here should the rounding modes be defined: + FE_TONEAREST + FE_DOWNWARD + FE_UPWARD + FE_TOWARDSZERO + We define no macro which signals no rounding mode is selectable. */ + + +/* Type representing exception flags. + XXX Probably we should also include the signal handler here. */ +typedef struct + { + unsigned int flags; + } +fexcept_t; + + +/* Type representing floating-point environment. */ +typedef struct + { + fexcept_t excepts; + /* XXX I don't know what else we should save. */ + } +fenv_t; + +/* If the default argument is used we use this value. */ +#define FE_DFL_ENV ((fenv_t *) -1l) |