libgfortran/config/fpu-sysv.h

   1 /* SysV FPU-related code (for systems not otherwise supported).
   2    Copyright 2005, 2007 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 2 of the License, or (at your option) any later version.
  11
  12 In addition to the permissions in the GNU General Public License, the
  13 Free Software Foundation gives you unlimited permission to link the
  14 compiled version of this file into combinations with other programs,
  15 and to distribute those combinations without any restriction coming
  16 from the use of this file.  (The General Public License restrictions
  17 do apply in other respects; for example, they cover modification of
  18 the file, and distribution when not linked into a combine
  19 executable.)
  20
  21 Libgfortran is distributed in the hope that it will be useful,
  22 but WITHOUT ANY WARRANTY; without even the implied warranty of
  23 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  24 GNU General Public License for more details.
  25
  26 You should have received a copy of the GNU General Public
  27 License along with libgfortran; see the file COPYING.  If not,
  28 write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  29 Boston, MA 02110-1301, USA.  */
  30
  31
  32 /* FPU-related code for SysV platforms with fpsetmask().  */
  33
  34 void
  35 set_fpu (void)
  36 {
  37   int cw = 0;
  38
  39   if (options.fpe & GFC_FPE_INVALID)
  40 #ifdef FP_X_INV
  41     cw |= FP_X_INV;
  42 #else
  43     st_printf ("Fortran runtime warning: IEEE 'invalid operation' "
  44                "exception not supported.\n");
  45 #endif
  46
  47   if (options.fpe & GFC_FPE_DENORMAL)
  48 #ifdef FP_X_DNML
  49     cw |= FP_X_DNML;
  50 #else
  51     st_printf ("Fortran runtime warning: IEEE 'denormal number' "
  52                "exception not supported.\n");
  53 #endif
  54
  55   if (options.fpe & GFC_FPE_ZERO)
  56 #ifdef FP_X_DZ
  57     cw |= FP_X_DZ;
  58 #else
  59     st_printf ("Fortran runtime warning: IEEE 'division by zero' "
  60                "exception not supported.\n");
  61 #endif
  62
  63   if (options.fpe & GFC_FPE_OVERFLOW)
  64 #ifdef FP_X_OFL
  65     cw |= FP_X_OFL;
  66 #else
  67     st_printf ("Fortran runtime warning: IEEE 'overflow' "
  68                "exception not supported.\n");
  69 #endif
  70
  71   if (options.fpe & GFC_FPE_UNDERFLOW)
  72 #ifdef FP_X_UFL
  73     cw |= FP_X_UFL;
  74 #else
  75     st_printf ("Fortran runtime warning: IEEE 'underflow' "
  76                "exception not supported.\n");
  77 #endif
  78
  79   if (options.fpe & GFC_FPE_PRECISION)
  80 #ifdef FP_X_IMP
  81     cw |= FP_X_IMP;
  82 #else
  83     st_printf ("Fortran runtime warning: IEEE 'loss of precision' "
  84                "exception not supported.\n");
  85 #endif
  86
  87   fpsetmask(cw);
  88 }