1 /* Copyright (C) 1999-2015 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
24 of the appropriate bits in the FPU control word. */
28 #define FE_INEXACT 0x04
31 #define FE_UNDERFLOW 0x08
34 #define FE_OVERFLOW 0x10
37 #define FE_DIVBYZERO 0x20
40 #define FE_INVALID 0x40
44 #define FE_ALL_EXCEPT \
45 (FE_INEXACT | FE_DIVBYZERO | FE_UNDERFLOW | FE_OVERFLOW | FE_INVALID)
47 /* The SH FPU supports two of the four defined rounding modes: round to nearest
48 and round to zero. We use again the bit positions in the FPU control word
49 as the values for the appropriate macros. */
55 #define FE_TONEAREST 0x0
58 #define FE_TOWARDZERO 0x1
63 /* Type representing exception flags. */
64 typedef unsigned short int fexcept_t
;
67 /* Type representing floating-point environment. This function corresponds
68 to the layout of the block written by the `fstenv'. */
75 /* If the default argument is used we use this value. */
76 #define FE_DFL_ENV ((const fenv_t *) -1)