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04277e02d7
* All files with FSF copyright notices: Update copyright dates using scripts/update-copyrights. * locale/programs/charmap-kw.h: Regenerated. * locale/programs/locfile-kw.h: Likewise.
44 lines
1.3 KiB
C
44 lines
1.3 KiB
C
/* Install given floating-point control modes. e500 version.
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Copyright (C) 2016-2019 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_libc.h>
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#include <sysdep.h>
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#include <sys/prctl.h>
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#define SPEFSCR_STATUS 0xff3eff00
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int
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fesetmode (const femode_t *modep)
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{
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fenv_union_t u;
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INTERNAL_SYSCALL_DECL (err);
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int r;
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u.fenv = *modep;
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unsigned int spefscr = fegetenv_register ();
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spefscr = (spefscr & SPEFSCR_STATUS) | (u.l[1] & ~SPEFSCR_STATUS);
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fesetenv_register (spefscr);
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r = INTERNAL_SYSCALL (prctl, err, 2, PR_SET_FPEXC,
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u.l[0] | PR_FP_EXC_SW_ENABLE);
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if (INTERNAL_SYSCALL_ERROR_P (r, err))
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return -1;
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return 0;
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}
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