93 lines
2.7 KiB
C
93 lines
2.7 KiB
C
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/* AIX FPU-related code.
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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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/* FPU-related code for AIX. */
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#ifdef HAVE_FPTRAP_H
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#include <fptrap.h>
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#endif
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#ifdef HAVE_FLOAT_H
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#include <float.h>
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#endif
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void
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set_fpu (void)
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{
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fptrap_t mode = 0;
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if (options.fpe & GFC_FPE_INVALID)
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#ifdef TRP_INVALID
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mode |= TRP_INVALID;
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#else
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st_printf ("Fortran runtime warning: IEEE 'invalid operation' "
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"exception not supported.\n");
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#endif
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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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#ifdef TRP_DIV_BY_ZERO
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mode |= TRP_DIV_BY_ZERO;
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#else
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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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#endif
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if (options.fpe & GFC_FPE_OVERFLOW)
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#ifdef TRP_OVERFLOW
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mode |= TRP_OVERFLOW;
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#else
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st_printf ("Fortran runtime warning: IEEE 'overflow' "
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"exception not supported.\n");
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#endif
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if (options.fpe & GFC_FPE_UNDERFLOW)
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#ifdef TRP_UNDERFLOW
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mode |= TRP_UNDERFLOW;
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#else
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st_printf ("Fortran runtime warning: IEEE 'underflow' "
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"exception not supported.\n");
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#endif
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if (options.fpe & GFC_FPE_PRECISION)
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#ifdef TRP_UNDERFLOW
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mode |= TRP_UNDERFLOW;
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#else
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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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#endif
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fp_trap(FP_TRAP_SYNC);
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fp_enable(mode);
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}
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