ports/sysdeps/mips/fpu/fraiseexcpt.c

   1 /* Raise given exceptions.
   2    Copyright (C) 2000-2014 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4    Contributed by Andreas Jaeger <aj@suse.de>, 2000.
   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, see
  18    <http://www.gnu.org/licenses/>.  */
  19
  20 #include <fenv.h>
  21 #include <fenv_libc.h>
  22 #include <fpu_control.h>
  23
  24 int
  25 feraiseexcept (int excepts)
  26 {
  27   fpu_control_t cw;
  28
  29   /* Get current state.  */
  30   _FPU_GETCW (cw);
  31
  32   /* Set flag bits (which are accumulative), and *also* set the
  33      cause bits. The setting of the cause bits is what actually causes
  34      the hardware to generate the exception, if the corresponding enable
  35      bit is set as well.  */
  36
  37   excepts &= FE_ALL_EXCEPT;
  38   cw |= excepts | (excepts << CAUSE_SHIFT);
  39
  40   /* Set new state.  */
  41   _FPU_SETCW (cw);
  42
  43   return 0;
  44 }
  45
  46 libm_hidden_def (feraiseexcept)