fallback to floor function when rint function is not available.

2008-05-21  Jan Heller  <jheller@svn.gnome.org>

        * babl/babl-internal.h:
        * babl/base/type-u16.c:
        * babl/base/type-u32.c:
        * babl/base/type-u8.c:
        * extensions/CIE-Lab.c:
        * extensions/gegl-fixups.c:
        * extensions/gggl-lies.c:
        * extensions/gggl.c:
        * extensions/gimp-8bit.c:
        * extensions/util.h: fallback to floor function when rint function
        is not available.

        * configure.ac: added check for rint function.

svn path=/trunk/; revision=313

1 files changed, 10 insertions, 0 deletions

diff --git a/babl/babl-internal.h b/babl/babl-internal.h
index 6d20b2b..c7d6110 100644
--- a/babl/babl-internal.h
+++ b/babl/babl-internal.h
@@ -30,12 +30,15 @@
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>
+#include <math.h>
 #include "assert.h"
 
 #undef  _BABL_INTERNAL_H
 #include "babl.h"
 #define _BABL_INTERNAL_H
 
+#include "config.h"
+
 #include "babl-list.h"
 #include "babl-hash-table.h"
 #include "babl-db.h"
@@ -49,6 +52,13 @@
 #define random  rand
 #endif
 
+/* fallback to floor function when rint is not around */
+#ifndef HAVE_RINT
+# define rint(f)  ((long) floor (((double) f) + 0.5))
+#endif
+
+
+
 Babl * babl_conversion_find       (const void     *source,
                                          const void     *destination);
 double   babl_conversion_error          (BablConversion *conversion);