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author | Mark H Weaver <mhw@netris.org> | 2011-03-07 06:27:42 -0500 |
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committer | Mark H Weaver <mhw@netris.org> | 2011-03-09 17:06:05 -0500 |
commit | dd36ce77cd899c7b179026603e751e3bb47b2943 (patch) | |
tree | d2f26243f1b6bbb025dea3919ce47f7bc29993cc /lib/isnand-nolibm.h | |
parent | df1297956211b7353155c9b54d7e9c22d05ce493 (diff) | |
download | guile-dd36ce77cd899c7b179026603e751e3bb47b2943.tar.gz |
Update Gnulib; add new modules; remove `round' module.
This updates Gnulib to v0.0-4951-g6ff7b70.
* m4/gnulib-cache.m4: Add floor, ceil, frexp, and ldexp. Add wchar as
an explicit dependency; it had been present as an indirect dependency
before, but no longer. Remove round, which I had requested earlier,
but turned out to be unnecessary.
Diffstat (limited to 'lib/isnand-nolibm.h')
-rw-r--r-- | lib/isnand-nolibm.h | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/lib/isnand-nolibm.h b/lib/isnand-nolibm.h new file mode 100644 index 000000000..e434a7bd0 --- /dev/null +++ b/lib/isnand-nolibm.h @@ -0,0 +1,33 @@ +/* Test for NaN that does not need libm. + Copyright (C) 2007-2011 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 <http://www.gnu.org/licenses/>. */ + +#if HAVE_ISNAND_IN_LIBC +/* Get declaration of isnan macro. */ +# include <math.h> +# if __GNUC__ >= 4 + /* GCC 4.0 and newer provides three built-ins for isnan. */ +# undef isnand +# define isnand(x) __builtin_isnan ((double)(x)) +# else +# undef isnand +# define isnand(x) isnan ((double)(x)) +# endif +#else +/* Test whether X is a NaN. */ +# undef isnand +# define isnand rpl_isnand +extern int isnand (double x); +#endif |