libgfortran/config/fpu-sysv.h

   1 /* SysV FPU-related code (for systems not otherwise supported).
   2    Copyright 2005, 2007, 2009 Free Software Foundation, Inc.
   3    Contributed by Francois-Xavier Coudert <coudert@clipper.ens.fr>
   4
   5 This file is part of the GNU Fortran 95 runtime library (libgfortran).
   6
   7 Libgfortran is free software; you can redistribute it and/or
   8 modify it under the terms of the GNU General Public
   9 License as published by the Free Software Foundation; either
  10 version 3 of the License, or (at your option) any later version.
  11
  12 Libgfortran is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 Under Section 7 of GPL version 3, you are granted additional
  18 permissions described in the GCC Runtime Library Exception, version
  19 3.1, as published by the Free Software Foundation.
  20
  21 You should have received a copy of the GNU General Public License and
  22 a copy of the GCC Runtime Library Exception along with this program;
  23 see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  24 <http://www.gnu.org/licenses/>.  */
  25
  26 /* FPU-related code for SysV platforms with fpsetmask().  */
  27
  28 void
  29 set_fpu (void)
  30 {
  31   int cw = 0;
  32
  33   if (options.fpe & GFC_FPE_INVALID)
  34 #ifdef FP_X_INV
  35     cw |= FP_X_INV;
  36 #else
  37     st_printf ("Fortran runtime warning: IEEE 'invalid operation' "
  38                "exception not supported.\n");
  39 #endif
  40
  41   if (options.fpe & GFC_FPE_DENORMAL)
  42 #ifdef FP_X_DNML
  43     cw |= FP_X_DNML;
  44 #else
  45     st_printf ("Fortran runtime warning: IEEE 'denormal number' "
  46                "exception not supported.\n");
  47 #endif
  48
  49   if (options.fpe & GFC_FPE_ZERO)
  50 #ifdef FP_X_DZ
  51     cw |= FP_X_DZ;
  52 #else
  53     st_printf ("Fortran runtime warning: IEEE 'division by zero' "
  54                "exception not supported.\n");
  55 #endif
  56
  57   if (options.fpe & GFC_FPE_OVERFLOW)
  58 #ifdef FP_X_OFL
  59     cw |= FP_X_OFL;
  60 #else
  61     st_printf ("Fortran runtime warning: IEEE 'overflow' "
  62                "exception not supported.\n");
  63 #endif
  64
  65   if (options.fpe & GFC_FPE_UNDERFLOW)
  66 #ifdef FP_X_UFL
  67     cw |= FP_X_UFL;
  68 #else
  69     st_printf ("Fortran runtime warning: IEEE 'underflow' "
  70                "exception not supported.\n");
  71 #endif
  72
  73   if (options.fpe & GFC_FPE_PRECISION)
  74 #ifdef FP_X_IMP
  75     cw |= FP_X_IMP;
  76 #else
  77     st_printf ("Fortran runtime warning: IEEE 'loss of precision' "
  78                "exception not supported.\n");
  79 #endif
  80
  81   fpsetmask(cw);
  82 }