131 lines
3.1 KiB
C
131 lines
3.1 KiB
C
/* SysV FPU-related code (for systems not otherwise supported).
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Copyright (C) 2005-2013 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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/* FPU-related code for SysV platforms with fpsetmask(). */
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void
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set_fpu (void)
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{
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int cw = 0;
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if (options.fpe & GFC_FPE_INVALID)
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#ifdef FP_X_INV
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cw |= FP_X_INV;
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#else
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estr_write ("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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#ifdef FP_X_DNML
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cw |= FP_X_DNML;
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#else
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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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#endif
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if (options.fpe & GFC_FPE_ZERO)
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#ifdef FP_X_DZ
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cw |= FP_X_DZ;
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#else
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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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#endif
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if (options.fpe & GFC_FPE_OVERFLOW)
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#ifdef FP_X_OFL
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cw |= FP_X_OFL;
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#else
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estr_write ("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 FP_X_UFL
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cw |= FP_X_UFL;
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#else
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estr_write ("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_INEXACT)
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#ifdef FP_X_IMP
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cw |= FP_X_IMP;
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#else
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estr_write ("Fortran runtime warning: IEEE 'inexact' "
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"exception not supported.\n");
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#endif
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fpsetmask(cw);
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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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int result;
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#if HAVE_FP_EXCEPT
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fp_except set_excepts;
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#elif HAVE_FP_EXCEPT_T
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fp_except_t set_excepts;
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#else
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choke me
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#endif
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result = 0;
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set_excepts = fpgetsticky ();
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#ifdef FP_X_INV
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if (set_excepts & FP_X_INV)
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result |= GFC_FPE_INVALID;
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#endif
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#ifdef FP_X_DZ
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if (set_excepts & FP_X_DZ)
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result |= GFC_FPE_ZERO;
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#endif
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#ifdef FP_X_OFL
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if (set_excepts & FP_X_OFL)
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result |= GFC_FPE_OVERFLOW;
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#endif
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#ifdef FP_X_UFL
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if (set_excepts & FP_X_UFL)
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result |= GFC_FPE_UNDERFLOW;
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#endif
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#ifdef FP_X_DNML
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if (set_excepts & FP_X_DNML)
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result |= GFC_FPE_DENORMAL;
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#endif
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#ifdef FP_X_IMP
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if (set_excepts & FP_X_IMP)
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result |= GFC_FPE_INEXACT;
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#endif
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return result;
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}
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