From: Steve Baker <steve@stevebaker.org>
Date: Thu, 25 Apr 2002 19:39:14 +0000 (+0000)
Subject: macros to detect fast float to int casting, lrint and lrintf, thanks to Erik de Castr... 
X-Git-Tag: 1.19.3~509^2~16538
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=5a0d8a9886249059214d38a523623e373512e637;p=platform%2Fupstream%2Fgstreamer.git

macros to detect fast float to int casting, lrint and lrintf, thanks to Erik de Castro Lopo.

Original commit message from CVS:
macros to detect fast float to int casting, lrint and lrintf, thanks to Erik de Castro Lopo.
---

diff --git a/m4/lrint.m4 b/m4/lrint.m4
new file mode 100644
index 0000000..c60665c
--- /dev/null
+++ b/m4/lrint.m4
@@ -0,0 +1,27 @@
+dnl @synopsis AC_C99_FUNC_LRINT
+dnl
+dnl Check whether C99's lrint function is available.
+dnl @version 1.1
+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([AC_C99_FUNC_LRINT],
+[AC_CACHE_CHECK(for lrint,
+  ac_cv_c99_lrint,
+[AC_TRY_COMPILE([
+#define		_ISOC9X_SOURCE	1
+#define 	_ISOC99_SOURCE	1
+#define		__USE_ISOC99	1
+#define 	__USE_ISOC9X	1
+#include	<math.h>],
+[	int value = lrint (0.432) ; ], ac_cv_c99_lrint=yes, ac_cv_c99_lrint=no)])
+if test $ac_cv_c99_lrint = yes; then
+  AC_DEFINE(HAVE_LRINT, 1,
+            [Define if you have C99's lrint function.])
+fi
+])# AC_C99_LRINT
diff --git a/m4/lrintf.m4 b/m4/lrintf.m4
new file mode 100644
index 0000000..4ea74b5
--- /dev/null
+++ b/m4/lrintf.m4
@@ -0,0 +1,27 @@
+dnl @synopsis AC_C99_FUNC_LRINTF
+dnl
+dnl Check whether C99's lrintf function is available.
+dnl @version 1.1
+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([AC_C99_FUNC_LRINTF],
+[AC_CACHE_CHECK(for lrintf,
+  ac_cv_c99_lrintf,
+[AC_TRY_COMPILE([
+#define		_ISOC9X_SOURCE	1
+#define 	_ISOC99_SOURCE	1
+#define		__USE_ISOC99	1
+#define 	__USE_ISOC9X	1
+#include	<math.h>],
+[	int value = lrintf (0.432) ; ], ac_cv_c99_lrintf=yes, ac_cv_c99_lrintf=no)])
+if test $ac_cv_c99_lrintf = yes; then
+  AC_DEFINE(HAVE_LRINTF, 1,
+            [Define if you have C99's lrintf function.])
+fi
+])# AC_C99_LRINTF