Added basic vector functions

1 files changed, 32 insertions, 0 deletions

diff --git a/libc/inc/vec.h b/libc/inc/vec.h
new file mode 100644
index 0000000..9eb706c
--- /dev/null
+++ b/libc/inc/vec.h
@@ -0,0 +1,32 @@
+// MIT License, Copyright (c) 2021 Marvin Borner
+
+#ifndef VEC_H
+#define VEC_H
+
+#include <def.h>
+
+typedef struct vec2 {
+	u32 x, y;
+} vec2;
+
+typedef struct vec3 {
+	u32 x, y, z;
+} vec3;
+
+#define vec2_add(a, b) ((vec2){ a.x + b.x, a.y + b.y })
+#define vec2_sub(a, b) ((vec2){ a.x - b.x, a.y - b.y })
+#define vec2_mul(a, b) ((vec2){ a.x * b, a.y * b })
+#define vec2_div(a, b) ((vec2){ a.x / b, a.y / b })
+#define vec2_dot(a, b) ((u32)(a.x * b.x + a.y * b.y))
+#define vec2_eq(a, b) (a.x == b.x && a.y == b.y)
+
+#define vec3_add(a, b) ((vec3){ a.x + b.x, a.y + b.y, a.z + b.z })
+#define vec3_sub(a, b) ((vec3){ a.x - b.x, a.y - b.y, a.z - b.z })
+#define vec3_mul(a, b) ((vec3){ a.x * b, a.y * b, a.z * b })
+#define vec3_div(a, b) ((vec3){ a.x / b, a.y / b, a.z / b })
+#define vec3_dot(a, b) ((u32)(a.x * b.x + a.y * b.y + a.z * b.z))
+#define vec3_eq(a, b) (a.x == b.x && a.y == b.y && a.z == c.z)
+#define vec3_cross(a, b)                                                                           \
+	((vec3){ a.y * b.z - a.z * b.y, a.z * b.x - a.x * b.z, a.x * b.y - a.y * b.x })
+
+#endif