From fa095a4504cbe668e4244547e2c141597bea4ecf Mon Sep 17 00:00:00 2001 From: Andreas Rottmann Date: Mon, 14 Sep 2009 12:32:44 +0200 Subject: Imported Upstream version 0.9.1 --- lib/isnanl-nolibm.h | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) create mode 100644 lib/isnanl-nolibm.h (limited to 'lib/isnanl-nolibm.h') diff --git a/lib/isnanl-nolibm.h b/lib/isnanl-nolibm.h new file mode 100644 index 0000000..7fd46f8 --- /dev/null +++ b/lib/isnanl-nolibm.h @@ -0,0 +1,33 @@ +/* Test for NaN that does not need libm. + Copyright (C) 2007-2008 Free Software Foundation, Inc. + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU Lesser General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + This program 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 Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public License + along with this program. If not, see . */ + +#if HAVE_ISNANL_IN_LIBC +/* Get declaration of isnan macro or (older) isnanl function. */ +# include +# if __GNUC__ >= 4 + /* GCC 4.0 and newer provides three built-ins for isnan. */ +# undef isnanl +# define isnanl(x) __builtin_isnanl ((long double)(x)) +# elif defined isnan +# undef isnanl +# define isnanl(x) isnan ((long double)(x)) +# endif +#else +/* Test whether X is a NaN. */ +# undef isnanl +# define isnanl rpl_isnanl +extern int isnanl (long double x); +#endif -- cgit v1.2.3