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47 lines
1.1 KiB
C
47 lines
1.1 KiB
C
/*
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* Copyright (c) 2021, Mițca Dumitru <dumitru0mitca@gmail.com>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <arch/fenv.h>
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#include <stdint.h>
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#include <sys/cdefs.h>
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__BEGIN_DECLS
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#define FE_DFL_ENV ((fenv_t const*)-1)
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int fegetenv(fenv_t*);
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int fesetenv(fenv_t const*);
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int feholdexcept(fenv_t*);
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int feupdateenv(fenv_t const*);
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#define FE_INVALID 1u << 0
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#define FE_DIVBYZERO 1u << 2
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#define FE_OVERFLOW 1u << 3
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#define FE_UNDERFLOW 1u << 4
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#define FE_INEXACT 1u << 5
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#define FE_ALL_EXCEPT (FE_DIVBYZERO | FE_INEXACT | FE_INVALID | FE_OVERFLOW | FE_UNDERFLOW)
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typedef uint16_t fexcept_t;
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int fegetexceptflag(fexcept_t*, int exceptions);
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int fesetexceptflag(fexcept_t const*, int exceptions);
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int feclearexcept(int exceptions);
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int fetestexcept(int exceptions);
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int feraiseexcept(int exceptions);
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#define FE_TONEAREST 0
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#define FE_DOWNWARD 1
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#define FE_UPWARD 2
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#define FE_TOWARDZERO 3
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// Only exists in RISC-V at the moment; on other architectures this is replaced with FE_TONEAREST.
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#define FE_TOMAXMAGNITUDE 4
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int fesetround(int round);
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int fegetround(void);
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__END_DECLS
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