libgfortran/config/fpu-generic.h

   1 /* Fallback FPU-related code (for systems not otherwise supported).
   2    Copyright (C) 2005-2018 Free Software Foundation, Inc.
   3    Contributed by Francois-Xavier Coudert <coudert@clipper.ens.fr>
   4
   5 This file is part of the GNU Fortran 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
  27 /* Fallback FPU-related code for systems not otherwise supported. This
  28    is mainly telling the user that we will not be able to do what he
  29    requested.  */
  30
  31 void
  32 set_fpu (void)
  33 {
  34   if (options.fpe & GFC_FPE_INVALID)
  35     estr_write ("Fortran runtime warning: IEEE 'invalid operation' "
  36                 "exception not supported.\n");
  37   if (options.fpe & GFC_FPE_DENORMAL)
  38     estr_write ("Fortran runtime warning: Floating point 'denormal operand' "
  39                 "exception not supported.\n");
  40   if (options.fpe & GFC_FPE_ZERO)
  41     estr_write ("Fortran runtime warning: IEEE 'division by zero' "
  42                 "exception not supported.\n");
  43   if (options.fpe & GFC_FPE_OVERFLOW)
  44     estr_write ("Fortran runtime warning: IEEE 'overflow' "
  45                 "exception not supported.\n");
  46   if (options.fpe & GFC_FPE_UNDERFLOW)
  47     estr_write ("Fortran runtime warning: IEEE 'underflow' "
  48                 "exception not supported.\n");
  49   if (options.fpe & GFC_FPE_INEXACT)
  50     estr_write ("Fortran runtime warning: IEEE 'inexact' "
  51                 "exception not supported.\n");
  52 }
  53
  54 void
  55 set_fpu_trap_exceptions (int trap __attribute__((unused)),
  56                          int notrap __attribute__((unused)))
  57 {
  58 }
  59
  60 int
  61 get_fpu_except_flags (void)
  62 {
  63   return 0;
  64 }
  65
  66
  67 int
  68 get_fpu_rounding_mode (void)
  69 {
  70   return 0;
  71 }
  72
  73
  74 void
  75 set_fpu_rounding_mode (int round __attribute__((unused)))
  76 {
  77 }
  78
  79
  80 int
  81 support_fpu_underflow_control (int kind __attribute__((unused)))
  82 {
  83   return 0;
  84 }
  85
  86
  87 int
  88 get_fpu_underflow_mode (void)
  89 {
  90   return 0;
  91 }
  92
  93
  94 void
  95 set_fpu_underflow_mode (int gradual __attribute__((unused)))
  96 {
  97 }
  98