From 608a93f403009f25d3ef9deffbf48253808dbcc2 Mon Sep 17 00:00:00 2001
From: kj_sh604
Date: Fri, 5 Jun 2026 16:07:29 -0400
Subject: refactor: src/la.h

---
 src/la.h | 45 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 45 insertions(+)
 create mode 100644 src/la.h

diff --git a/src/la.h b/src/la.h
new file mode 100644
index 0000000..af8a293
--- /dev/null
+++ b/src/la.h
@@ -0,0 +1,45 @@
+#ifndef LA_H
+#define LA_H
+
+#include <math.h>
+
+typedef struct {
+    float x, y;
+} Vec2f;
+
+Vec2f vec2(float x, float y);
+Vec2f vec2_add(Vec2f a, Vec2f b);
+Vec2f vec2_sub(Vec2f a, Vec2f b);
+Vec2f vec2_mul(Vec2f a, float s);
+Vec2f vec2_div(Vec2f a, float s);
+float vec2_length(Vec2f a);
+
+#ifdef LA_IMPL
+
+Vec2f vec2(float x, float y) {
+    return (Vec2f){x, y};
+}
+
+Vec2f vec2_add(Vec2f a, Vec2f b) {
+    return vec2(a.x + b.x, a.y + b.y);
+}
+
+Vec2f vec2_sub(Vec2f a, Vec2f b) {
+    return vec2(a.x - b.x, a.y - b.y);
+}
+
+Vec2f vec2_mul(Vec2f a, float s) {
+    return vec2(a.x * s, a.y * s);
+}
+
+Vec2f vec2_div(Vec2f a, float s) {
+    return vec2(a.x / s, a.y / s);
+}
+
+float vec2_length(Vec2f a) {
+    return sqrtf(a.x * a.x + a.y * a.y);
+}
+
+#endif // LA_IMPL
+
+#endif // LA_H
-- 
cgit v1.2.3