sysdeps/unix/sysv/linux/powerpc/powerpc64/fpu/fe_nomask.c

   1 /* Procedure definition for FE_NOMASK_ENV for Linux/ppc64.
   2    Copyright (C) 2003-2014 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 #include <errno.h>
  21 #include <sysdep.h>
  22 #include <sys/syscall.h>
  23 #include <sys/prctl.h>
  24 #include <kernel-features.h>
  25 #include <shlib-compat.h>
  26
  27 const fenv_t *
  28 __fe_nomask_env_priv (void)
  29 {
  30 #if defined PR_SET_FPEXC && defined PR_FP_EXC_PRECISE
  31   INTERNAL_SYSCALL_DECL (err);
  32   INTERNAL_SYSCALL (prctl, err, 2, PR_SET_FPEXC, PR_FP_EXC_PRECISE);
  33 #else
  34   __set_errno (ENOSYS);
  35 #endif
  36   return FE_ENABLED_ENV;
  37 }
  38 #if SHLIB_COMPAT (libm, GLIBC_2_3, GLIBC_2_19)
  39 compat_symbol (libm, __fe_nomask_env_priv, __fe_nomask_env, GLIBC_2_3);
  40 #endif