f5168e47a8
* libgfortran.h (support_fpu_underflow_control,
get_fpu_underflow_mode, set_fpu_underflow_mode): New prototypes.
* config/fpu-*.h (support_fpu_underflow_control,
get_fpu_underflow_mode, set_fpu_underflow_mode):
New functions.
* ieee/ieee_arithmetic.F90: Support underflow control.
* gfortran.dg/ieee/underflow_1.f90: New file.
From-SVN: r212407
99 lines
2.7 KiB
C
99 lines
2.7 KiB
C
/* Fallback FPU-related code (for systems not otherwise supported).
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Copyright (C) 2005-2014 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 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 3 of the License, or (at your option) any later version.
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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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Under Section 7 of GPL version 3, you are granted additional
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permissions described in the GCC Runtime Library Exception, version
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3.1, as published by the Free Software Foundation.
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You should have received a copy of the GNU General Public License and
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a copy of the GCC Runtime Library Exception along with this program;
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see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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<http://www.gnu.org/licenses/>. */
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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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estr_write ("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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estr_write ("Fortran runtime warning: Floating point 'denormal operand' "
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"exception not supported.\n");
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if (options.fpe & GFC_FPE_ZERO)
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estr_write ("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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estr_write ("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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estr_write ("Fortran runtime warning: IEEE 'underflow' "
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"exception not supported.\n");
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if (options.fpe & GFC_FPE_INEXACT)
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estr_write ("Fortran runtime warning: IEEE 'inexact' "
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"exception not supported.\n");
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}
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void
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set_fpu_trap_exceptions (int trap __attribute__((unused)),
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int notrap __attribute__((unused)))
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{
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}
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int
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get_fpu_except_flags (void)
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{
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return 0;
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}
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int
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get_fpu_rounding_mode (void)
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{
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return 0;
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}
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void
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set_fpu_rounding_mode (int round __attribute__((unused)))
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{
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}
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int
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support_fpu_underflow_control (int kind __attribute__((unused)))
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{
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return 0;
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}
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int
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get_fpu_underflow_mode (void)
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{
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return 0;
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}
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void
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set_fpu_underflow_mode (int gradual __attribute__((unused)))
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{
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}
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