/* Implementation of the SPACING intrinsic Copyright 2006 Free Software Foundation, Inc. Contributed by Steven G. Kargl <kargl@gcc.gnu.org> This file is part of the GNU Fortran 95 runtime library (libgfortran). Libgfortran is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. In addition to the permissions in the GNU General Public License, the Free Software Foundation gives you unlimited permission to link the compiled version of this file into combinations with other programs, and to distribute those combinations without any restriction coming from the use of this file. (The General Public License restrictions do apply in other respects; for example, they cover modification of the file, and distribution when not linked into a combine executable.) Libgfortran is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with libgfortran; see the file COPYING. If not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ #include "config.h" #include <math.h> #include "libgfortran.h" #if defined (HAVE_GFC_REAL_16) && defined (HAVE_FREXPL) extern GFC_REAL_16 spacing_r16 (GFC_REAL_16 s, int p, int emin, GFC_REAL_16 tiny); export_proto(spacing_r16); GFC_REAL_16 spacing_r16 (GFC_REAL_16 s, int p, int emin, GFC_REAL_16 tiny) { int e; if (s == 0.) return tiny; frexpl (s, &e); e = e - p; e = e > emin ? e : emin; #if defined (HAVE_LDEXPL) return ldexpl (1., e); #else return scalbnl (1., e); #endif } #endif