sysdeps/alpha/fpu/fsetexcptflg.c

   1 /* Set floating-point environment exception handling.
   2    Copyright (C) 1997-2015 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4    Contributed by Richard Henderson <rth@tamu.edu>, 1997.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2.1 of the License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library.  If not, see
  18    <http://www.gnu.org/licenses/>.  */
  19
  20 #include <fenv_libc.h>
  21
  22 int
  23 __fesetexceptflag (const fexcept_t *flagp, int excepts)
  24 {
  25   unsigned long int tmp;
  26
  27   /* Get the current exception state.  */
  28   tmp = __ieee_get_fp_control ();
  29
  30   /* Set all the bits that were called for.  */
  31   tmp = (tmp & ~SWCR_STATUS_MASK) | (*flagp & excepts & SWCR_STATUS_MASK);
  32
  33   /* And store it back.  */
  34   __ieee_set_fp_control (tmp);
  35
  36   /* Success.  */
  37   return 0;
  38 }
  39
  40 #include <shlib-compat.h>
  41 #if SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_2)
  42 strong_alias (__fesetexceptflag, __old_fesetexceptflag)
  43 compat_symbol (libm, __old_fesetexceptflag, fesetexceptflag, GLIBC_2_1);
  44 #endif
  45
  46 versioned_symbol (libm, __fesetexceptflag, fesetexceptflag, GLIBC_2_2);