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author | Ludovic Courtès <ludo@gnu.org> | 2010-09-08 00:34:27 +0200 |
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committer | Ludovic Courtès <ludo@gnu.org> | 2010-09-08 00:34:27 +0200 |
commit | 2e65b52f8a2e5f82ddc8da471d989f14468f8b90 (patch) | |
tree | c7d6b3a20e87029b46137e6a9bb80642edd3be1c /lib/isinf.c | |
parent | 18f2d5aa4dfe66469d4b109e5b56b931a057a3e0 (diff) | |
download | guile-2e65b52f8a2e5f82ddc8da471d989f14468f8b90.tar.gz |
Use Gnulib's `isnan' and `isinf' modules.
This updates Gnulib to v0.0-4219-g84cdd8b.
* m4/gnulib-cache.m4: Add `isinf' and `isnan'.
* configure.ac: Remove checks for `floatingpoint.h', `ieeefp.h', and
`nan.h'.
* libguile/gen-scmconfig.c (main): Remove definitions of
`SCM_HAVE_FLOATINGPOINT_H', `SCM_HAVE_IEEEFP_H', and
`SCM_HAVE_NAN_H'.
* libguile/numbers.c (isnan)[SCO && !HAVE_ISNAN]: Remove.
(isinf)[SCO && !HAVE_ISINF]: Remove.
(xisinf, xisnan): Remove. Change callers to use `isinf' and `isnan'.
(guile_ieee_init): Remove the `defined HAVE_ISINF' and `define
HAVE_ISNAN' conditions.
* libguile/numbers.h: Remove code conditional on
`SCM_HAVE_FLOATINGPOINT_H', `SCM_HAVE_IEEEFP_H', or `SCM_HAVE_NAN_H'.
Diffstat (limited to 'lib/isinf.c')
-rw-r--r-- | lib/isinf.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/lib/isinf.c b/lib/isinf.c new file mode 100644 index 000000000..a2d6d1085 --- /dev/null +++ b/lib/isinf.c @@ -0,0 +1,37 @@ +/* Test for positive or negative infinity. + Copyright (C) 2007-2010 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 2, 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, write to the Free Software Foundation, + Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ + +/* Written by Ben Pfaff <blp@gnu.org>, 2008. */ + +#include <config.h> + +#include <float.h> + +int gl_isinff (float x) +{ + return x < -FLT_MAX || x > FLT_MAX; +} + +int gl_isinfd (double x) +{ + return x < -DBL_MAX || x > DBL_MAX; +} + +int gl_isinfl (long double x) +{ + return x < -LDBL_MAX || x > LDBL_MAX; +} |