Added temporary compiling fix for MSVC after Campbell's rounding commit.

Copied (in if-defs - for msvc win32/64) the python math functions used for dealing with the lack of a 'round()' function.  

1 files changed, 29 insertions, 0 deletions

diff --git a/source/blender/blenlib/intern/math_base.c b/source/blender/blenlib/intern/math_base.c
index e1a53a09d40..c5d0a1090b3 100644
--- a/source/blender/blenlib/intern/math_base.c
+++ b/source/blender/blenlib/intern/math_base.c
@@ -109,6 +109,35 @@ float power_of_2(float val)
 	return (float)pow(2, ceil(log(val) / log(2)));
 }
 
+
+/* WARNING: MSVC compiling hack for double_round() */
+#if (WIN32 || WIN64) && !(FREE_WINDOWS)
+
+/* from python 3.1 pymath.c */
+double copysign(double x, double y)
+{
+	/* use atan2 to distinguish -0. from 0. */
+	if (y > 0. || (y == 0. && atan2(y, -1.) > 0.)) {
+		return fabs(x);
+	} else {
+		return -fabs(x);
+	}
+}
+
+/* from python 3.1 pymath.c */
+double round(double x)
+{
+    double absx, y;
+    absx = fabs(x);
+    y = floor(absx);
+    if (absx - y >= 0.5)
+        y += 1.0;
+    return copysign(y, x);
+}
+
+#endif
+
+
 /* from python 3.1 floatobject.c
  * ndigits must be between 0 and 21 */
 double double_round(double x, int ndigits) {