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36 lines
1.2 KiB
C
36 lines
1.2 KiB
C
/* Determine floating-point rounding mode within libc. Alpha version.
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Copyright (C) 2012-2016 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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#ifndef ALPHA_GET_ROUNDING_MODE_H
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#define ALPHA_GET_ROUNDING_MODE_H 1
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#include <fenv.h>
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#include <fenv_libc.h>
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/* Return the floating-point rounding mode. */
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static inline int
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get_rounding_mode (void)
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{
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unsigned long fpcr;
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__asm__ __volatile__("excb; mf_fpcr %0" : "=f"(fpcr));
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return (fpcr >> FPCR_ROUND_SHIFT) & 3;
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}
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#endif /* get-rounding-mode.h */
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