1 /* Fallback FPU-related code (for systems not otherwise supported). 2 Copyright (C) 2005-2020 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 set_fpu(void)32set_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 set_fpu_trap_exceptions(int trap,int notrap)55set_fpu_trap_exceptions (int trap __attribute__((unused)), 56 int notrap __attribute__((unused))) 57 { 58 } 59 60 int get_fpu_except_flags(void)61get_fpu_except_flags (void) 62 { 63 return 0; 64 } 65 66 67 int get_fpu_rounding_mode(void)68get_fpu_rounding_mode (void) 69 { 70 return 0; 71 } 72 73 74 void set_fpu_rounding_mode(int round)75set_fpu_rounding_mode (int round __attribute__((unused))) 76 { 77 } 78 79 80 int support_fpu_underflow_control(int kind)81support_fpu_underflow_control (int kind __attribute__((unused))) 82 { 83 return 0; 84 } 85 86 87 int get_fpu_underflow_mode(void)88get_fpu_underflow_mode (void) 89 { 90 return 0; 91 } 92 93 94 void set_fpu_underflow_mode(int gradual)95set_fpu_underflow_mode (int gradual __attribute__((unused))) 96 { 97 } 98 99