sysdeps/powerpc/powerpc32/e500/nofpu/fclrexcpt.c

   1 /* Clear given exceptions in current floating-point environment.  e500 version.
   2    Copyright (C) 2004-2014 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <http://www.gnu.org/licenses/>.  */
  18
  19 #include <fenv_libc.h>
  20
  21 #undef feclearexcept
  22 int
  23 __feclearexcept (int excepts)
  24 {
  25   unsigned int fpescr;
  26   int excepts_spe = __fexcepts_to_spe (excepts);
  27
  28   /* Get the current state.  */
  29   fpescr = fegetenv_register ();
  30
  31   /* Clear the relevant bits.  */
  32   fpescr &= ~excepts_spe;
  33
  34   /* Put the new state in effect.  */
  35   fesetenv_register (fpescr);
  36
  37   /* Let the kernel know if the "invalid" or "underflow" bit was
  38      cleared.  */
  39   if (excepts & (FE_INVALID | FE_UNDERFLOW))
  40     __fe_note_change ();
  41
  42   /* Success.  */
  43   return 0;
  44 }
  45
  46 #include <shlib-compat.h>
  47 #if SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_2)
  48 strong_alias (__feclearexcept, __old_feclearexcept)
  49 compat_symbol (libm, __old_feclearexcept, feclearexcept, GLIBC_2_1);
  50 #endif
  51
  52 libm_hidden_ver (__feclearexcept, feclearexcept)
  53 versioned_symbol (libm, __feclearexcept, feclearexcept, GLIBC_2_2);