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40 lines
1.2 KiB
C
40 lines
1.2 KiB
C
/* Return current rounding mode as correct value for FLT_ROUNDS. e500
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version.
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Copyright (C) 2013-2016 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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#include <fenv_libc.h>
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#include <stdlib.h>
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int
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__flt_rounds (void)
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{
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switch (fegetenv_register () & SPEFSCR_FRMC)
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{
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case FE_TOWARDZERO:
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return 0;
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case FE_TONEAREST:
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return 1;
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case FE_UPWARD:
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return 2;
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case FE_DOWNWARD:
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return 3;
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default:
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abort ();
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}
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}
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