1 /* Copyright (C) 1999-2013 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <http://www.gnu.org/licenses/>. */
19 # error "Never use <bits/fenv.h> directly; include <fenv.h> instead."
23 /* Define bits representing the exception. We use the bit positions of
24 the appropriate bits in the FPSR... (Tahoe EAS 2.4 5-4)*/
29 #define FE_INEXACT (1 << 5)
33 #define FE_UNDERFLOW (1 << 4)
37 #define FE_OVERFLOW (1 << 3)
41 #define FE_DIVBYZERO (1 << 2)
45 #define FE_UNNORMAL (1 << 1)
49 #define FE_INVALID (1 << 0)
53 #define FE_ALL_EXCEPT (FE_INEXACT | FE_UNDERFLOW | FE_OVERFLOW | FE_DIVBYZERO | FE_UNNORMAL | FE_INVALID)
61 #define FE_TOWARDZERO 3
73 #define FE_TONEAREST 0
78 /* Type representing exception flags. */
79 typedef unsigned long int fexcept_t
;
81 /* Type representing floating-point environment. */
82 typedef unsigned long int fenv_t
;
84 /* If the default argument is used we use this value. */
85 #define FE_DFL_ENV ((const fenv_t *) 0xc009804c0270033fUL)
88 /* Floating-point environment where only FE_UNNORMAL is masked since this
89 exception is not generally supported by glibc. */
90 # define FE_NOMASK_ENV ((const fenv_t *) 0xc009804c02700302UL)
92 /* Floating-point environment with (processor-dependent) non-IEEE
93 floating point. In this case, turning on flush-to-zero mode for
95 # define FE_NONIEEE_ENV ((const fenv_t *) 0xc009a04d0270037fUL)