1 /* Copyright (C) 1998-2024 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 <https://www.gnu.org/licenses/>. */
19 # error "Never use <bits/fenv.h> directly; include <fenv.h> instead."
23 #ifdef __mips_hard_float
25 /* Define bits representing the exception. We use the bit positions
26 of the appropriate bits in the FPU control word. */
30 # define FE_INEXACT 0x04
33 # define FE_UNDERFLOW 0x08
36 # define FE_OVERFLOW 0x10
39 # define FE_DIVBYZERO 0x20
42 # define FE_INVALID 0x40
46 # define FE_ALL_EXCEPT \
47 (FE_INEXACT | FE_DIVBYZERO | FE_UNDERFLOW | FE_OVERFLOW | FE_INVALID)
49 /* The MIPS FPU supports all of the four defined rounding modes. We
50 use again the bit positions in the FPU control word as the values
51 for the appropriate macros. */
55 # define FE_TONEAREST 0x0
58 # define FE_TOWARDZERO 0x1
61 # define FE_UPWARD 0x2
64 # define FE_DOWNWARD 0x3
70 /* In the soft-float case, only rounding to nearest is supported, with
78 # define FE_TONEAREST 0x0
82 # define FE_ALL_EXCEPT 0
87 /* Type representing exception flags. */
88 typedef unsigned short int fexcept_t
;
91 /* Type representing floating-point environment. This function corresponds
92 to the layout of the block written by the `fstenv'. */
95 unsigned int __fp_control_register
;
99 /* If the default argument is used we use this value. */
100 #define FE_DFL_ENV ((const fenv_t *) -1)
102 #if defined __USE_GNU && defined __mips_hard_float
103 /* Floating-point environment where none of the exception is masked. */
104 # define FE_NOMASK_ENV ((const fenv_t *) -2)
107 #if __GLIBC_USE (IEC_60559_BFP_EXT_C23)
108 /* Type representing floating-point control modes. */
109 typedef unsigned int femode_t
;
111 /* Default floating-point control modes. */
112 # define FE_DFL_MODE ((const femode_t *) -1L)