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44 lines
1.3 KiB
C
44 lines
1.3 KiB
C
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/* Set floating-point environment exception handling.
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Copyright (C) 2024 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 <fpu_control.h>
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int
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fesetexceptflag (const fexcept_t *flagp, int excepts)
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{
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fpu_control_t cw;
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fpu_control_t cw_new;
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/* Get the current exceptions. */
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_FPU_GETCW (cw);
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/* Make sure the flags we want restored are legal. */
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excepts &= FE_ALL_EXCEPT;
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/* Now set selected bits from flagp. Note that we ignore all non-flag
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bits from *flagp, so they don't matter. */
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cw_new = (cw & ~excepts) | (*flagp & excepts);
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if (cw != cw_new)
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_FPU_SETCW (cw_new);
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/* Success. */
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return 0;
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}
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