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43 lines
1.4 KiB
C
43 lines
1.4 KiB
C
/* Install given floating-point control modes. IA64 version.
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Copyright (C) 2016-2020 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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#define FPSR_STATUS 0x1f80UL
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#define FPSR_STATUS_ALL ((FPSR_STATUS << 6) | (FPSR_STATUS << 19) \
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| (FPSR_STATUS << 32) | (FPSR_STATUS << 45))
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int
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fesetmode (const femode_t *modep)
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{
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femode_t mode;
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/* As in fesetenv. */
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if (((fenv_t) modep >> 62) == 0x03)
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mode = (femode_t) modep & 0x3fffffffffffffffUL;
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else
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mode = *modep;
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femode_t fpsr;
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__asm__ __volatile__ ("mov.m %0=ar.fpsr" : "=r" (fpsr));
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fpsr = (fpsr & FPSR_STATUS_ALL) | (mode & ~FPSR_STATUS_ALL);
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__asm__ __volatile__ ("mov.m ar.fpsr=%0;;" :: "r" (fpsr));
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return 0;
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}
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