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- /* Floating point environment, OpenRISC version.
- Copyright (C) 2022-2025 Free Software Foundation, Inc.
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public License as
- published by the Free Software Foundation; either version 2.1 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
- Lesser General Public License for more details.
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, see
- <https://www.gnu.org/licenses/>. */
- #ifndef _FENV_H
- # error "Never use <bits/fenv.h> directly; include <fenv.h> instead."
- #endif
- #ifdef __or1k_hard_float__
- /* Define bits representing exceptions in the FPCSR status word. */
- enum
- {
- FE_OVERFLOW =
- #define FE_OVERFLOW (1 << 3)
- FE_OVERFLOW,
- FE_UNDERFLOW =
- #define FE_UNDERFLOW (1 << 4)
- FE_UNDERFLOW,
- FE_INEXACT =
- #define FE_INEXACT (1 << 8)
- FE_INEXACT,
- FE_INVALID =
- #define FE_INVALID (1 << 9)
- FE_INVALID,
- FE_DIVBYZERO =
- #define FE_DIVBYZERO (1 << 11)
- FE_DIVBYZERO,
- };
- /* All supported exceptions. */
- #define FE_ALL_EXCEPT \
- (FE_INVALID | FE_DIVBYZERO | FE_OVERFLOW | FE_UNDERFLOW | FE_INEXACT)
- /* Define bits representing rounding modes in the FPCSR Rmode field. */
- #define FE_TONEAREST (0x0 << 1)
- #define FE_TOWARDZERO (0x1 << 1)
- #define FE_UPWARD (0x2 << 1)
- #define FE_DOWNWARD (0x3 << 1)
- #else
- /* In the soft-float case only rounding to nearest is supported, with
- no exceptions. */
- enum
- {
- __FE_UNDEFINED = -1,
- FE_TONEAREST =
- # define FE_TONEAREST 0x0
- FE_TONEAREST
- };
- # define FE_ALL_EXCEPT 0
- #endif /* __or1k_hard_float__ */
- /* Type representing exception flags. */
- typedef unsigned int fexcept_t;
- /* Type representing floating-point environment. */
- typedef unsigned int fenv_t;
- /* If the default argument is used we use this value. */
- #define FE_DFL_ENV ((const fenv_t *) -1l)
- /* Type representing floating-point control modes. */
- typedef unsigned int femode_t;
- /* Default floating-point control modes. */
- # define FE_DFL_MODE ((const femode_t *) -1L)
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