2 files changed, 25 insertions, 0 deletions
diff --git a/source/blender/blenlib/BLI_math_matrix.h b/source/blender/blenlib/BLI_math_matrix.h
index 8e35b197e14..49e05f5401e 100644
--- a/source/blender/blenlib/BLI_math_matrix.h
+++ b/source/blender/blenlib/BLI_math_matrix.h
@@ -59,6 +59,9 @@ void swap_m4m4(float A[4][4], float B[4][4]);
 void add_m3_m3m3(float R[3][3], const float A[3][3], const float B[3][3]);
 void add_m4_m4m4(float R[4][4], const float A[4][4], const float B[4][4]);
 
+void madd_m3_m3m3fl(float R[3][3], const float A[3][3], const float B[3][3], const float f);
+void madd_m4_m4m4fl(float R[4][4], const float A[4][4], const float B[4][4], const float f);
+
 void sub_m3_m3m3(float R[3][3], const float A[3][3], const float B[3][3]);
 void sub_m4_m4m4(float R[4][4], const float A[4][4], const float B[4][4]);
 
diff --git a/source/blender/blenlib/intern/math_matrix.c b/source/blender/blenlib/intern/math_matrix.c
index a98b65d0330..f21d883252c 100644
--- a/source/blender/blenlib/intern/math_matrix.c
+++ b/source/blender/blenlib/intern/math_matrix.c
@@ -813,6 +813,28 @@ void add_m4_m4m4(float m1[4][4], const float m2[4][4], const float m3[4][4])
 	}
 }
 
+void madd_m3_m3m3fl(float m1[3][3], const float m2[3][3], const float m3[3][3], const float f)
+{
+	int i, j;
+
+	for (i = 0; i < 3; i++) {
+		for (j = 0; j < 3; j++) {
+			m1[i][j] = m2[i][j] + m3[i][j] * f;
+		}
+	}
+}
+
+void madd_m4_m4m4fl(float m1[4][4], const float m2[4][4], const float m3[4][4], const float f)
+{
+	int i, j;
+
+	for (i = 0; i < 4; i++) {
+		for (j = 0; j < 4; j++) {
+			m1[i][j] = m2[i][j] + m3[i][j] * f;
+		}
+	}
+}
+
 void sub_m3_m3m3(float m1[3][3], const float m2[3][3], const float m3[3][3])
 {
 	int i, j;