cleanup for mathutils multiplication functions, a little faster in some cases, raise more informative exceptions.

1 files changed, 18 insertions, 0 deletions

diff --git a/source/blender/blenlib/intern/math_vector.c b/source/blender/blenlib/intern/math_vector.c
index 2ff1e948317..539d3fb97f6 100644
--- a/source/blender/blenlib/intern/math_vector.c
+++ b/source/blender/blenlib/intern/math_vector.c
@@ -398,6 +398,24 @@ void add_vn_vn(float *array_tar, const float *array_src, const int size)
 	while(i--) { *(tar--) += *(src--); }
 }
 
+void add_vn_vnvn(float *array_tar, const float *array_src_a, const float *array_src_b, const int size)
+{
+	float *tar= array_tar + (size-1);
+	const float *src_a= array_src_a + (size-1);
+	const float *src_b= array_src_b + (size-1);
+	int i= size;
+	while(i--) { *(tar--) = *(src_a--) + *(src_b--); }
+}
+
+void sub_vn_vnvn(float *array_tar, const float *array_src_a, const float *array_src_b, const int size)
+{
+	float *tar= array_tar + (size-1);
+	const float *src_a= array_src_a + (size-1);
+	const float *src_b= array_src_b + (size-1);
+	int i= size;
+	while(i--) { *(tar--) = *(src_a--) - *(src_b--); }
+}
+
 void fill_vni(int *array_tar, const int size, const int val)
 {
 	int *tar= array_tar + (size-1);