/* FPU-related code for systems with GNU libc. Copyright 2005 Free Software Foundation, Inc. Contributed by Francois-Xavier Coudert <coudert@clipper.ens.fr> This file is part of the GNU Fortran 95 runtime library (libgfortran). Libgfortran is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. In addition to the permissions in the GNU General Public License, the Free Software Foundation gives you unlimited permission to link the compiled version of this file into combinations with other programs, and to distribute those combinations without any restriction coming from the use of this file. (The General Public License restrictions do apply in other respects; for example, they cover modification of the file, and distribution when not linked into a combine executable.) Libgfortran is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with libgfortran; see the file COPYING. If not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ /* FPU-related code for systems with the GNU libc, providing the feenableexcept function in fenv.h to set individual exceptions (there's nothing to do that in C99). */ #ifdef HAVE_FENV_H #include <fenv.h> #endif void set_fpu (void) { if (FE_ALL_EXCEPT != 0) fedisableexcept (FE_ALL_EXCEPT); if (options.fpe & GFC_FPE_INVALID) #ifdef FE_INVALID feenableexcept (FE_INVALID); #else st_printf ("Fortran runtime warning: IEEE 'invalid operation' " "exception not supported.\n"); #endif /* glibc does never have a FE_DENORMAL. */ if (options.fpe & GFC_FPE_DENORMAL) #ifdef FE_DENORMAL feenableexcept (FE_DENORMAL); #else st_printf ("Fortran runtime warning: IEEE 'denormal number' " "exception not supported.\n"); #endif if (options.fpe & GFC_FPE_ZERO) #ifdef FE_DIVBYZERO feenableexcept (FE_DIVBYZERO); #else st_printf ("Fortran runtime warning: IEEE 'division by zero' " "exception not supported.\n"); #endif if (options.fpe & GFC_FPE_OVERFLOW) #ifdef FE_OVERFLOW feenableexcept (FE_OVERFLOW); #else st_printf ("Fortran runtime warning: IEEE 'overflow' " "exception not supported.\n"); #endif if (options.fpe & GFC_FPE_UNDERFLOW) #ifdef FE_UNDERFLOW feenableexcept (FE_UNDERFLOW); #else st_printf ("Fortran runtime warning: IEEE 'underflow' " "exception not supported.\n"); #endif if (options.fpe & GFC_FPE_PRECISION) #ifdef FE_INEXACT feenableexcept (FE_INEXACT); #else st_printf ("Fortran runtime warning: IEEE 'loss of precision' " "exception not supported.\n"); #endif }