From 0bd7c5dc0725a4882cb33c5d8f1a3b101d4025cd Mon Sep 17 00:00:00 2001
From: pryazha <pryadeiniv@mail.ru>
Date: Thu, 20 Feb 2025 15:08:47 +0500
Subject: initial

---
 prb_math.h | 64 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 64 insertions(+)
 create mode 100644 prb_math.h

(limited to 'prb_math.h')

diff --git a/prb_math.h b/prb_math.h
new file mode 100644
index 0000000..efa0fab
--- /dev/null
+++ b/prb_math.h
@@ -0,0 +1,64 @@
+#ifndef PRB_MATH_H
+#define PRB_MATH_H
+
+/* NOTE(pryazha): Numeric */
+#define F32_PI 3.14159265359f
+
+#define DEG2RAD F32_PI/180.0f
+#define RAD2DEG 182.0f/F32_PI
+
+F32 f32sin(F32 a);
+F32 f32cos(F32 a);
+F32 f32sqrt(F32 a);
+
+/* NOTE(pryazha): Vectors */
+V2 v2(F32 x, F32 y);
+V2 v2a(F32 x);
+V2 v2neg(V2 a);
+V2 v2add(V2 a, V2 b);
+V2 v2sub(V2 a, V2 b);
+V2 v2scalef(V2 a, F32 s);
+V2 v2scale(V2 a, V2 s);
+F32 v2dot(V2 a, V2 b);
+F32 v2len2(V2 a);
+F32 v2len(V2 a);
+void v2print(V2 a);
+
+V3 v3(F32 x, F32 y, F32 z);
+V3 v3a(F32 x);
+V3 v3neg(V3 a);
+V3 v3add(V3 a, V3 b);
+V3 v3sub(V3 a, V3 b);
+V3 v3scalef(V3 a, F32 s);
+V3 v3scale(V3 a, V3 s);
+F32 v3dot(V3 a, V3 b);
+V3 v3cross(V3 l, V3 r);
+F32 v3len2(V3 a);
+F32 v3len(V3 a);
+void v3print(V3 a);
+
+V4 v4(F32 x, F32 y, F32 z, F32 w);
+V4 v4a(F32 x);
+V4 v4fromv3(V3 a);
+V4 v4neg(V4 a);
+V4 v4add(V4 a, V4 b);
+V4 v4sub(V4 a, V4 b);
+V4 v4scalef(V4 a, F32 s);
+V4 v4scale(V4 a, V4 s);
+F32 v4dot(V4 a, V4 b);
+F32 v4len2(V4 a);
+F32 v4len(V4 a);
+void v4print(V4 a);
+
+/* NOTE(pryazha): Matrices */
+F32 mat4det(Mat4 m);
+Mat4 mat4transpose(Mat4 m);
+Mat4 mat4mul(Mat4 left, Mat4 right);
+Mat4 mat4translate(Mat4 m, V3 v);
+Mat4 mat4scale(Mat4 m, V3 v);
+Mat4 mat4_change_basis(V3 x, V3 y, V3 z);
+Mat4 mat4rotate(Mat4 m, V3 angles); /* NOTE(pryazha): Angles in degrees */
+V4 mat4v4mul(Mat4 m, V4 v);
+void mat4print(Mat4 m);
+
+#endif /* PRB_MATH_H */
-- 
cgit v1.2.3-70-g09d2