cc6d3bde5a
2006-10-06 Steven G. Kargl <kargl@gcc.gnu.org> * gfortran.h: Define GFC_MPFR_TOO_OLD via mpfr version info. * arith.c (arctangent, gfc_check_real_range): Use it. * simplify.c (gfc_simplify_atan2, gfc_simplify_exponent, gfc_simplify_log, gfc_simplify_nearest): Use it. PR fortran/15441 PR fortran/29312 * iresolve.c (gfc_resolve_rrspacing): Give rrspacing library routine hidden precision argument. (gfc_resolve_spacing): Give spacing library routine hidden precision, emin - 1, and tiny(x) arguments. * simplify.c (gfc_simplify_nearest): Remove explicit subnormalization. (gfc_simplify_rrspacing): Implement formula from Fortran 95 standard. (gfc_simplify_spacing): Implement formula from Fortran 2003 standard. * trans-intrinsic.c (gfc_intrinsic_map_t) Declare rrspacing and spacing via LIBF_FUNCTION (prepare_arg_info, call_builtin_clz, gfc_conv_intrinsic_spacing, gfc_conv_intrinsic_rrspacing): Remove functions. (gfc_conv_intrinsic_function): Remove calls to gfc_conv_intrinsic_spacing and gfc_conv_intrinsic_rrspacing. * f95-lang.c (gfc_init_builtin_functions): Remove __builtin_clz, __builtin_clzl and __builtin_clzll 2006-10-06 Steven G. Kargl <kargl@gcc.gnu.org> PR fortran/15441 PR fortran/29312 * configure.ac: Add HAVE_LDEXPF, HAVE_LDEXP, and HAVE_LDEXPL * m4/spacing.m4: New file. Use new HAVE_* defines. * m4/rrspacing.m4: Ditto. * Makefile.am: Handle new files. * configure: Regenerated. * Makefile.in: Ditto. * config.h.in: Ditto. * generated/spacing_r4.c: Generated. * generated/spacing_r8.c: Ditto. * generated/spacing_r10.c: Ditto. * generated/spacing_r16.c: Ditto. * generated/rrspacing_r4.c: Ditto. * generated/rrspacing_r8.c: Ditto. * generated/rrspacing_r10.c: Ditto. * generated/rrspacing_r16.c: Ditto. From-SVN: r117584
54 lines
1.8 KiB
C
54 lines
1.8 KiB
C
/* Implementation of the SPACING intrinsic
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Copyright 2006 Free Software Foundation, Inc.
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Contributed by Steven G. Kargl <kargl@gcc.gnu.org>
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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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#include "config.h"
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#include <math.h>
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#include "libgfortran.h"
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#if defined (HAVE_GFC_REAL_16) && defined (HAVE_FREXPL) && defined (HAVE_LDEXPL)
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extern GFC_REAL_16 spacing_r16 (GFC_REAL_16 s, int p, int emin, GFC_REAL_16 tiny);
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export_proto(spacing_r16);
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GFC_REAL_16
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spacing_r16 (GFC_REAL_16 s, int p, int emin, GFC_REAL_16 tiny)
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{
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int e;
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if (s == 0.)
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return tiny;
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frexpl (s, &e);
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e = e - p;
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e = e > emin ? e : emin;
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return ldexpl (1., e);
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}
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#endif
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