82a4f54cc5
2013-07-21 Tobias Burnus <burnus@net-b.de>
PR fortran/35862
* libgfortran.h (GFC_FPE_DOWNWARD, GFC_FPE_TONEAREST,
GFC_FPE_TOWARDZERO, GFC_FPE_UPWARD): New defines.
2013-07-21 Tobias Burnus <burnus@net-b.de>
PR fortran/35862
* libgfortran.h (set_fpu_rounding_mode,
get_fpu_rounding_mode): New prototypes.
* config/fpu-387.h (set_fpu_rounding_mode,
get_fpu_rounding_mode): New functions.
* config/fpu-aix.h (set_fpu_rounding_mode,
get_fpu_rounding_mode): Ditto.
* config/fpu-generic.h (set_fpu_rounding_mode,
get_fpu_rounding_mode): Ditto.
* config/fpu-glibc.h (set_fpu_rounding_mode,
get_fpu_rounding_mode): Ditto.
* config/fpu-sysv.h (set_fpu_rounding_mode,
get_fpu_rounding_mode): Ditto.
* configure.ac: Check for fp_rnd and fp_rnd_t.
* io/io.h (enum unit_round): Use GFC_FPE_* for the value.
* io/read.c (convert_real): Set FP ronding mode.
* Makefile.in: Regenerate.
* aclocal.m4: Regenerate.
* config.h.in: Regenerate.
* configure: Regenerate.
2013-07-21 Tobias Burnus <burnus@net-b.de>
PR fortran/35862
* gfortran.dg/round_4.f90: New.
Co-Authored-By: Uros Bizjak <ubizjak@gmail.com>
From-SVN: r201093
191 lines
3.8 KiB
C
191 lines
3.8 KiB
C
/* AIX FPU-related code.
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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 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_FPXCP_H
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#include <fpxcp.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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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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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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#ifdef TRP_DIV_BY_ZERO
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mode |= TRP_DIV_BY_ZERO;
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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 TRP_OVERFLOW
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mode |= TRP_OVERFLOW;
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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 TRP_UNDERFLOW
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mode |= TRP_UNDERFLOW;
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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 TRP_INEXACT
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mode |= TRP_INEXACT;
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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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fp_trap(FP_TRAP_SYNC);
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fp_enable(mode);
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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, set_excepts;
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result = 0;
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#ifdef HAVE_FPXCP_H
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if (!fp_any_xcp ())
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return 0;
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if (fp_invalid_op ())
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result |= GFC_FPE_INVALID;
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if (fp_divbyzero ())
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result |= GFC_FPE_ZERO;
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if (fp_overflow ())
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result |= GFC_FPE_OVERFLOW;
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if (fp_underflow ())
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result |= GFC_FPE_UNDERFLOW;
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if (fp_inexact ())
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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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int
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get_fpu_rounding_mode (void)
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{
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int rnd_mode;
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rnd_mode = fegetround ();
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switch (rnd_mode)
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{
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#ifdef FE_TONEAREST
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case FE_TONEAREST:
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return GFC_FPE_TONEAREST;
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#endif
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#ifdef FE_UPWARD
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case FE_UPWARD:
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return GFC_FPE_UPWARD;
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#endif
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#ifdef FE_DOWNWARD
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case FE_DOWNWARD:
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return GFC_FPE_DOWNWARD;
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#endif
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#ifdef FE_TOWARDZERO
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case FE_TOWARDZERO:
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return GFC_FPE_TOWARDZERO;
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#endif
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default:
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return GFC_FPE_INVALID;
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}
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}
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void
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set_fpu_rounding_mode (int mode)
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{
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int rnd_mode;
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switch (mode)
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{
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#ifdef FE_TONEAREST
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case GFC_FPE_TONEAREST:
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rnd_mode = FE_TONEAREST;
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break;
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#endif
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#ifdef FE_UPWARD
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case GFC_FPE_UPWARD:
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rnd_mode = FE_UPWARD;
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break;
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#endif
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#ifdef FE_DOWNWARD
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case GFC_FPE_DOWNWARD:
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rnd_mode = FE_DOWNWARD;
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break;
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#endif
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#ifdef FE_TOWARDZERO
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case GFC_FPE_TOWARDZERO:
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rnd_mode = FE_TOWARDZERO;
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break;
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#endif
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default:
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return;
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}
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fesetround (rnd_mode);
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}
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