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1 /* Fallback FPU-related code (for systems not otherwise supported).
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2 Copyright (C) 2005-2020 Free Software Foundation, Inc.
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3 Contributed by Francois-Xavier Coudert <coudert@clipper.ens.fr>
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4
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5 This file is part of the GNU Fortran runtime library (libgfortran).
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6
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7 Libgfortran is free software; you can redistribute it and/or
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8 modify it under the terms of the GNU General Public
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9 License as published by the Free Software Foundation; either
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10 version 3 of the License, or (at your option) any later version.
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11
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12 Libgfortran is distributed in the hope that it will be useful,
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13 but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 GNU General Public License for more details.
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16
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17 Under Section 7 of GPL version 3, you are granted additional
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18 permissions described in the GCC Runtime Library Exception, version
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19 3.1, as published by the Free Software Foundation.
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20
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21 You should have received a copy of the GNU General Public License and
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22 a copy of the GCC Runtime Library Exception along with this program;
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23 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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24 <http://www.gnu.org/licenses/>. */
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25
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26
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27 /* Fallback FPU-related code for systems not otherwise supported. This
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28 is mainly telling the user that we will not be able to do what he
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29 requested. */
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30
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31 void
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32 set_fpu (void)
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33 {
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34 if (options.fpe & GFC_FPE_INVALID)
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35 estr_write ("Fortran runtime warning: IEEE 'invalid operation' "
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36 "exception not supported.\n");
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37 if (options.fpe & GFC_FPE_DENORMAL)
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38 estr_write ("Fortran runtime warning: Floating point 'denormal operand' "
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39 "exception not supported.\n");
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40 if (options.fpe & GFC_FPE_ZERO)
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41 estr_write ("Fortran runtime warning: IEEE 'division by zero' "
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42 "exception not supported.\n");
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43 if (options.fpe & GFC_FPE_OVERFLOW)
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44 estr_write ("Fortran runtime warning: IEEE 'overflow' "
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45 "exception not supported.\n");
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46 if (options.fpe & GFC_FPE_UNDERFLOW)
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47 estr_write ("Fortran runtime warning: IEEE 'underflow' "
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48 "exception not supported.\n");
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49 if (options.fpe & GFC_FPE_INEXACT)
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50 estr_write ("Fortran runtime warning: IEEE 'inexact' "
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51 "exception not supported.\n");
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52 }
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53
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54 void
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55 set_fpu_trap_exceptions (int trap __attribute__((unused)),
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56 int notrap __attribute__((unused)))
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57 {
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58 }
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59
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60 int
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61 get_fpu_except_flags (void)
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62 {
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63 return 0;
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64 }
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65
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66
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67 int
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68 get_fpu_rounding_mode (void)
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69 {
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70 return 0;
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71 }
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72
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73
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74 void
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75 set_fpu_rounding_mode (int round __attribute__((unused)))
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76 {
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77 }
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78
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79
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80 int
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81 support_fpu_underflow_control (int kind __attribute__((unused)))
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82 {
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83 return 0;
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84 }
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85
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86
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87 int
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88 get_fpu_underflow_mode (void)
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89 {
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90 return 0;
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91 }
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92
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93
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94 void
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95 set_fpu_underflow_mode (int gradual __attribute__((unused)))
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96 {
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97 }
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98
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