sysdeps/mips/fpu/fraiseexcpt.c

   1 /* Raise given exceptions.
   2    Copyright (C) 2000, 2002 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, write to the Free
  18    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  19    02111-1307 USA.  */
  20
  21 #include <fenv.h>
  22 #include <fenv_libc.h>
  23 #include <fpu_control.h>
  24
  25 int
  26 feraiseexcept (int excepts)
  27 {
  28   fpu_control_t cw;
  29
  30   /* Get current state.  */
  31   _FPU_GETCW (cw);
  32
  33   /* Set flag bits (which are accumulative), and *also* set the
  34      cause bits. The setting of the cause bits is what actually causes
  35      the hardware to generate the exception, if the corresponding enable
  36      bit is set as well.  */
  37
  38   excepts &= FE_ALL_EXCEPT;
  39   cw |= excepts | (excepts << CAUSE_SHIFT);
  40
  41   /* Set new state.  */
  42   _FPU_SETCW (cw);
  43
  44   return 0;
  45 }
  46
  47 libm_hidden_def (feraiseexcept)