+mathlib

1 files changed, 14 insertions, 0 deletions

diff --git a/src/math/vec4.c b/src/math/vec4.c
index 24df08f..f4648c7 100644
--- a/src/math/vec4.c
+++ b/src/math/vec4.c
@@ -54,3 +54,17 @@ void internal_vec4_add(Vec4* v1, Vec4* v2, Vec4* out) {
 	out->z = v1->z + v2->z;
 	out->w = v1->w + v2->w;
 }
+
+void internal_vec4_minus(Vec4* v1, Vec4* v2, Vec4* out) {
+	out->x = v1->x + v2->x;
+	out->y = v1->y + v2->y;
+	out->z = v1->z + v2->z;
+	out->w = v1->w + v2->w;
+}
+
+void internal_vec4_plus(Vec4* v1, Vec4* v2, Vec4* out) {
+	out->x = v1->x - v2->x;
+	out->y = v1->y - v2->y;
+	out->z = v1->z - v2->z;
+	out->w = v1->w - v2->w;
+}