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| author | Lorry <lorry@roadtrain.codethink.co.uk> | 2012-07-18 20:35:05 +0100 |
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| committer | Lorry <lorry@roadtrain.codethink.co.uk> | 2012-07-18 20:35:05 +0100 |
| commit | aceb1f30497619786f1827e4c65992b890a07410 (patch) | |
| tree | ce33ac9d0d076a8ec4f993e614cf71a4d5daa7e7 /M4/lrint.m4 | |
| download | libsndfile-aceb1f30497619786f1827e4c65992b890a07410.tar.gz | |
Tarball conversion
Diffstat (limited to 'M4/lrint.m4')
| -rw-r--r-- | M4/lrint.m4 | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/M4/lrint.m4 b/M4/lrint.m4 new file mode 100644 index 0000000..c2c21d6 --- /dev/null +++ b/M4/lrint.m4 @@ -0,0 +1,37 @@ +dnl @synopsis MN_C99_FUNC_LRINT +dnl +dnl Check whether C99's lrint function is available. +dnl @version 1.3 Feb 12 2002 +dnl @author Erik de Castro Lopo <erikd AT mega-nerd DOT com> +dnl +dnl Permission to use, copy, modify, distribute, and sell this file for any +dnl purpose is hereby granted without fee, provided that the above copyright +dnl and this permission notice appear in all copies. No representations are +dnl made about the suitability of this software for any purpose. It is +dnl provided "as is" without express or implied warranty. +dnl +AC_DEFUN([MN_C99_FUNC_LRINT], +[AC_CACHE_CHECK(for lrint, + ac_cv_c99_lrint, +[ +lrint_save_CFLAGS=$CFLAGS +CFLAGS="-lm" +AC_TRY_LINK([ +#define _ISOC9X_SOURCE 1 +#define _ISOC99_SOURCE 1 +#define __USE_ISOC99 1 +#define __USE_ISOC9X 1 + +#include <math.h> +], if (!lrint(3.14159)) lrint(2.7183);, ac_cv_c99_lrint=yes, ac_cv_c99_lrint=no) + +CFLAGS=$lrint_save_CFLAGS + +]) + +if test "$ac_cv_c99_lrint" = yes; then + AC_DEFINE(HAVE_LRINT, 1, + [Define if you have C99's lrint function.]) +fi +])# MN_C99_FUNC_LRINT + |