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89 lines
2.4 KiB
C
89 lines
2.4 KiB
C
/* Floating point environment, OpenRISC version.
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Copyright (C) 2022-2025 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public License as
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published by the Free Software Foundation; either version 2.1 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#ifndef _FENV_H
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# error "Never use <bits/fenv.h> directly; include <fenv.h> instead."
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#endif
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#ifdef __or1k_hard_float__
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/* Define bits representing exceptions in the FPCSR status word. */
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enum
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{
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FE_OVERFLOW =
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#define FE_OVERFLOW (1 << 3)
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FE_OVERFLOW,
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FE_UNDERFLOW =
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#define FE_UNDERFLOW (1 << 4)
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FE_UNDERFLOW,
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FE_INEXACT =
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#define FE_INEXACT (1 << 8)
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FE_INEXACT,
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FE_INVALID =
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#define FE_INVALID (1 << 9)
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FE_INVALID,
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FE_DIVBYZERO =
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#define FE_DIVBYZERO (1 << 11)
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FE_DIVBYZERO,
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};
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/* All supported exceptions. */
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#define FE_ALL_EXCEPT \
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(FE_INVALID | FE_DIVBYZERO | FE_OVERFLOW | FE_UNDERFLOW | FE_INEXACT)
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/* Define bits representing rounding modes in the FPCSR Rmode field. */
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#define FE_TONEAREST (0x0 << 1)
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#define FE_TOWARDZERO (0x1 << 1)
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#define FE_UPWARD (0x2 << 1)
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#define FE_DOWNWARD (0x3 << 1)
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#else
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/* In the soft-float case only rounding to nearest is supported, with
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no exceptions. */
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enum
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{
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__FE_UNDEFINED = -1,
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FE_TONEAREST =
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# define FE_TONEAREST 0x0
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FE_TONEAREST
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};
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# define FE_ALL_EXCEPT 0
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#endif /* __or1k_hard_float__ */
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/* Type representing exception flags. */
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typedef unsigned int fexcept_t;
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/* Type representing floating-point environment. */
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typedef unsigned int fenv_t;
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/* If the default argument is used we use this value. */
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#define FE_DFL_ENV ((const fenv_t *) -1l)
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#if __GLIBC_USE (IEC_60559_BFP_EXT_C23)
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/* Type representing floating-point control modes. */
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typedef unsigned int femode_t;
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/* Default floating-point control modes. */
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# define FE_DFL_MODE ((const femode_t *) -1L)
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#endif
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