From 3743a74c6e4ae1a1f54f9be1296639f9dab2502b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bor=20Gro=C5=A1elj=20Simi=C4=87?=
 <bor.groseljsimic@telemach.net>
Date: Thu, 13 Jan 2022 01:49:11 +0100
Subject: [PATCH] implement cross product

---
 vector.ha | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/vector.ha b/vector.ha
index cd9e313..6dcc5ba 100644
--- a/vector.ha
+++ b/vector.ha
@@ -26,6 +26,12 @@ export fn sum(v1: vector, v2: vector) vector = vector {
 
 export fn diff(v1: vector, v2: vector) vector = sum(v1, neg(v2));
 
+export fn cross(v1: vector, v2: vector) vector = vector {
+	x = v1.y * v2.z - v1.z * v2.y,
+	y = v1.z * v2.x - v1.x * v2.z,
+	z = v1.x * v2.y - v1.y * v2.x,
+};
+
 export fn dot(v1: vector, v2: vector) f64 = v1.x * v2.x + v1.y * v2.y + v1.z * v2.z;
 
 export fn length(v: vector) f64 = math::sqrtf64(dot(v, v));
-- 
2.45.2