sysdeps/powerpc/nofpu/feholdexcpt.c

   1 /* Store current floating-point environment and clear exceptions
   2    (soft-float edition).
   3    Copyright (C) 2002, 2007, 2008 Free Software Foundation, Inc.
   4    Contributed by Aldy Hernandez <aldyh@redhat.com>, 2002.
   5    This file is part of the GNU C Library.
   6
   7    The GNU C Library is free software; you can redistribute it and/or
   8    modify it under the terms of the GNU Lesser General Public
   9    License as published by the Free Software Foundation; either
  10    version 2.1 of the License, or (at your option) any later version.
  11
  12    The GNU C Library is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15    Lesser General Public License for more details.
  16
  17    You should have received a copy of the GNU Lesser General Public
  18    License along with the GNU C Library.  If not, see
  19    <http://www.gnu.org/licenses/>.  */
  20
  21 #include "soft-fp.h"
  22 #include "soft-supp.h"
  23
  24 int
  25 feholdexcept (fenv_t *envp)
  26 {
  27   fenv_union_t u;
  28
  29   /* Get the current state.  */
  30   __fegetenv (envp);
  31
  32   u.fenv = *envp;
  33   /* Clear everything except the rounding mode.  */
  34   u.l[0] &= 0x3;
  35   /* Disable exceptions */
  36   u.l[1] = FE_ALL_EXCEPT;
  37
  38   /* Put the new state in effect.  */
  39   fesetenv (&u.fenv);
  40
  41   return 0;
  42 }
  43 libm_hidden_def (feholdexcept)