2012-03-27 23:13:14 +00:00
|
|
|
`/* Implementation of the RRSPACING intrinsic
|
2015-08-28 15:33:40 +00:00
|
|
|
Copyright (C) 2006-2015 Free Software Foundation, Inc.
|
2012-03-27 23:13:14 +00:00
|
|
|
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 3 of the License, or (at your option) any later version.
|
|
|
|
|
|
|
|
|
|
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.
|
|
|
|
|
|
|
|
|
|
Under Section 7 of GPL version 3, you are granted additional
|
|
|
|
|
permissions described in the GCC Runtime Library Exception, version
|
|
|
|
|
3.1, as published by the Free Software Foundation.
|
|
|
|
|
|
|
|
|
|
You should have received a copy of the GNU General Public License and
|
|
|
|
|
a copy of the GCC Runtime Library Exception along with this program;
|
|
|
|
|
see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
|
|
|
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
|
|
|
|
|
|
#include "libgfortran.h"'
|
|
|
|
|
|
|
|
|
|
include(`mtype.m4')dnl
|
|
|
|
|
|
|
|
|
|
mathfunc_macro
|
|
|
|
|
|
|
|
|
|
`#if defined (HAVE_'real_type`) && 'hasmathfunc(fabs) && hasmathfunc(frexp)`
|
|
|
|
|
|
|
|
|
|
extern 'real_type` rrspacing_r'kind` ('real_type` s, int p);
|
|
|
|
|
export_proto(rrspacing_r'kind`);
|
|
|
|
|
|
|
|
|
|
'real_type`
|
|
|
|
|
rrspacing_r'kind` ('real_type` s, int p)
|
|
|
|
|
{
|
|
|
|
|
int e;
|
|
|
|
|
'real_type` x;
|
|
|
|
|
x = MATHFUNC(fabs) (s);
|
|
|
|
|
if (x == 0.)
|
|
|
|
|
return 0.;
|
|
|
|
|
MATHFUNC(frexp) (s, &e);
|
|
|
|
|
#if 'hasmathfunc(ldexp)`
|
|
|
|
|
return MATHFUNC(ldexp) (x, p - e);
|
|
|
|
|
#else
|
|
|
|
|
return MATHFUNC(scalbn) (x, p - e);
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
#endif'
|
