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04277e02d7
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60 lines
1.5 KiB
C
60 lines
1.5 KiB
C
/* Install given floating-point environment.
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Copyright (C) 2018-2019 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
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License as published by the Free Software Foundation; either
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version 2.1 of the 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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<http://www.gnu.org/licenses/>. */
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#include <fenv.h>
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#include <fpu_control.h>
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int
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__fesetenv (const fenv_t *envp)
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{
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unsigned int fpcr;
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unsigned int fpsr;
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_FPU_GETCW (fpcr);
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_FPU_GETFPSR (fpsr);
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fpcr &= _FPU_RESERVED;
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fpsr &= _FPU_FPSR_RESERVED;
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if (envp == FE_DFL_ENV)
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{
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fpcr |= _FPU_DEFAULT;
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fpsr |= _FPU_FPSR_DEFAULT;
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}
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else if (envp == FE_NOMASK_ENV)
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{
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fpcr |= _FPU_FPCR_IEEE;
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fpsr |= _FPU_FPSR_IEEE;
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}
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else
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{
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fpcr |= envp->__fpcr & ~_FPU_RESERVED;
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fpsr |= envp->__fpsr & ~_FPU_FPSR_RESERVED;
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}
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_FPU_SETFPSR (fpsr);
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_FPU_SETCW (fpcr);
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/* Success. */
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return 0;
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}
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libm_hidden_def (__fesetenv)
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weak_alias (__fesetenv, fesetenv)
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libm_hidden_weak (fesetenv)
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