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

   1 /* Procedure definition for FE_MASK_ENV for Linux/ppc64.
   2    Copyright (C) 2007-2019 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    <https://www.gnu.org/licenses/>.  */
  18
  19 #include <fenv.h>
  20 #include <errno.h>
  21 #include <sysdep.h>
  22 #include <sys/syscall.h>
  23 #include <sys/prctl.h>
  24
  25 const fenv_t *
  26 __fe_mask_env (void)
  27 {
  28 #if defined PR_SET_FPEXC && defined PR_FP_EXC_DISABLED
  29   INTERNAL_SYSCALL_DECL (err);
  30   INTERNAL_SYSCALL (prctl, err, 2, PR_SET_FPEXC, PR_FP_EXC_DISABLED);
  31 #else
  32   __set_errno (ENOSYS);
  33 #endif
  34   return FE_DFL_ENV;
  35 }