ports/sysdeps/arm/fegetenv.c

   1 /* Store current floating-point environment.
   2    Copyright (C) 1997-2014 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.h>
  20 #include <fpu_control.h>
  21 #include <arm-features.h>
  22
  23
  24 int
  25 __fegetenv (fenv_t *envp)
  26 {
  27   if (ARM_HAVE_VFP)
  28     {
  29       unsigned long int temp;
  30       _FPU_GETCW (temp);
  31       envp->__cw = temp;
  32
  33       /* Success.  */
  34       return 0;
  35     }
  36
  37   /* Unsupported, so fail.  */
  38   return 1;
  39 }
  40
  41 #include <shlib-compat.h>
  42 #if SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_2)
  43 strong_alias (__fegetenv, __old_fegetenv)
  44 compat_symbol (libm, __old_fegetenv, fegetenv, GLIBC_2_1);
  45 #endif
  46
  47 libm_hidden_ver (__fegetenv, fegetenv)
  48 versioned_symbol (libm, __fegetenv, fegetenv, GLIBC_2_2);