2007-01-18 Tomas Frydrych <tf@openedhand.com>

* clutter/clutter-fixed.h:
	* clutter/clutter-fixed.c:
	Added CLUTTER_QDIV() for 64-bit division (bug 564, patch by
	Gwenole Beauchesne).

ChangeLog

@@ -1,3 +1,10 @@
+2007-01-18  Tomas Frydrych  <tf@openedhand.com>
+
+	* clutter/clutter-fixed.h:
+	* clutter/clutter-fixed.c:
+	Added CLUTTER_QDIV() for 64-bit division (bug 564, patch by
+	Gwenole Beauchesne).
+
 2008-01-18  Emmanuele Bassi  <ebassi@openedhand.com>
 
 	* clutter/clutter-event.h: Add a gunichar field for the Unicode

clutter/clutter-fixed.c

@@ -741,6 +741,24 @@ clutter_qmulx (ClutterFixed op1, ClutterFixed op2)
 #endif
 }
 
+/**
+ * clutter_fixed_qdivx:
+ * @op1: #ClutterFixed
+ * @op2: #ClutterFixed
+ *
+ * Return value: #ClutterFixed.
+ *
+ * Divides two fixed values using 64bit arithmetic; this provides
+ * significantly better precission than the #CLUTTER_FIXED_DIV macro,
+ * but at performance cost.
+ *
+ * Since: 0.4
+ */
+ClutterFixed
+clutter_qdivx (ClutterFixed op1, ClutterFixed op2)
+{
+  return (ClutterFixed)((((gint64)op1) << CFX_Q) / op2);
+}
 
 /*
  * The log2x() and pow2x() functions

clutter/clutter-fixed.h

@@ -274,6 +274,7 @@ typedef gint32 ClutterAngle;    /* angle such that 1024 == 2*PI */
 #define CFX_MUL         CLUTTER_FIXED_MUL
 #define CFX_DIV         CLUTTER_FIXED_DIV
 #define CFX_QMUL(x,y)   clutter_qmulx (x,y)
+#define CFX_QDIV(x,y)   clutter_qdivx (x,y)
 
 /*< public >*/
 /* Fixed point math routines */