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* gfortran.h: Add bitmasks for different FPE traps. Add fpe member to options_t. * invoke.texi: Document the new -ffpe-trap option. * lang.opt: Add -ffpe-trap option. * options.c (gfc_init_options): Initialize the FPE option. (gfc_handle_fpe_trap_option): New function to parse the argument of the -ffpe-trap option. (gfc_handle_option): Add case for -ffpe-trap. * trans-decl.c: Declare a tree for the set_fpe library function. (gfc_build_builtin_function_decls): Build this tree. (gfc_generate_function_code): Generate a call to set_fpe at the beginning of the main program. * trans.h: New tree for the set_fpe library function. * Makefile.am: Add fpu.c to the build process, and target-dependent code as fpu-target.h. * Makefile.in: Regenerate. * configure.ac: Add call to configure.host to set FPU_HOST_HEADER. * configure: Regenerate. * config.h.in: Regenerate. * aclocal.m4: Regenerate. * configure.host: New script to determine which host-dependent code should go in. * libgfortran.h: Add fpe option, remove previous fpu_ options. Add bitmasks for different FPE traps. Add prototype for set_fpu. * runtime/environ.c: Remove environment variables to control fpu behaviour. * runtime/fpu.c (set_fpe): New function for the front-end. * runtime/main.c (init): Set FPU state. * config: New directory to store host-dependent code. * config/fpu-387.h: New file with code handling the i387 FPU. * config/fpu-glibc.h: New file with code for glibc systems. * config/fpu-generic.h: Fallback for the most generic host. Issue warnings. From-SVN: r105328
58 lines
2.4 KiB
C
58 lines
2.4 KiB
C
/* Fallback FPU-related code (for systems not otherwise supported).
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Copyright 2005 Free Software Foundation, Inc.
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Contributed by Francois-Xavier Coudert <coudert@clipper.ens.fr>
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This file is part of the GNU Fortran 95 runtime library (libgfortran).
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Libgfortran is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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In addition to the permissions in the GNU General Public License, the
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Free Software Foundation gives you unlimited permission to link the
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compiled version of this file into combinations with other programs,
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and to distribute those combinations without any restriction coming
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from the use of this file. (The General Public License restrictions
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do apply in other respects; for example, they cover modification of
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the file, and distribution when not linked into a combine
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executable.)
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Libgfortran is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public
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License along with libgfortran; see the file COPYING. If not,
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write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA. */
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/* Fallback FPU-related code for systems not otherwise supported. This
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is mainly telling the user that we will not be able to do what he
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requested. */
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void
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set_fpu (void)
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{
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if (options.fpe & GFC_FPE_INVALID)
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st_printf ("Fortran runtime warning: IEEE 'invalid operation' "
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"exception not supported.\n");
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if (options.fpe & GFC_FPE_DENORMAL)
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st_printf ("Fortran runtime warning: IEEE 'denormal number' "
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"exception not supported.\n");
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if (options.fpe & GFC_FPE_ZERO)
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st_printf ("Fortran runtime warning: IEEE 'division by zero' "
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"exception not supported.\n");
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if (options.fpe & GFC_FPE_OVERFLOW)
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st_printf ("Fortran runtime warning: IEEE 'overflow' "
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"exception not supported.\n");
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if (options.fpe & GFC_FPE_UNDERFLOW)
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st_printf ("Fortran runtime warning: IEEE 'underflow' "
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"exception not supported.\n");
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if (options.fpe & GFC_FPE_PRECISION)
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st_printf ("Fortran runtime warning: IEEE 'loss of precision' "
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"exception not supported.\n");
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}
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