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37 lines
1.2 KiB
C
37 lines
1.2 KiB
C
/* Store current floating-point environment.
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Copyright (C) 2000-2023 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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<https://www.gnu.org/licenses/>. */
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#include <fenv.h>
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#include <string.h>
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int
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__fegetenv (fenv_t *envp)
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{
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unsigned long long buf[4], *bufptr = buf;
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__asm__ (
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"fstd,ma %%fr0,8(%1) \n\t"
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"fldd -8(%1),%%fr0 \n\t"
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: "=m" (buf), "+r" (bufptr) : : "%r0");
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memcpy(envp, buf, sizeof (*envp));
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return 0;
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}
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libm_hidden_def (__fegetenv)
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weak_alias (__fegetenv, fegetenv)
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libm_hidden_weak (fegetenv)
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