sysdeps/s390/fpu/fesetenv.c

   1 /* Install given floating-point environment.
   2    Copyright (C) 2000, 2008 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4    Contributed by Denis Joseph Barrow (djbarrow@de.ibm.com).
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2.1 of the License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library; if not, write to the Free
  18    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  19    02111-1307 USA.  */
  20
  21 #include <fenv_libc.h>
  22 #include <fpu_control.h>
  23 #include <stddef.h>
  24 #include <asm/ptrace.h>
  25 #include <sys/ptrace.h>
  26 #include <unistd.h>
  27
  28 int
  29 fesetenv (const fenv_t *envp)
  30 {
  31   fenv_t env;
  32
  33   if (envp == FE_DFL_ENV)
  34     {
  35       env.fpc = _FPU_DEFAULT;
  36       env.ieee_instruction_pointer = 0;
  37     }
  38   else if (envp == FE_NOMASK_ENV)
  39     {
  40       env.fpc = FPC_EXCEPTION_MASK;
  41       env.ieee_instruction_pointer = 0;
  42     }
  43   else
  44     env = (*envp);
  45
  46   _FPU_SETCW (env.fpc);
  47
  48   /* Success.  */
  49   return 0;
  50 }
  51 libm_hidden_def (fesetenv)