finish refactor

zephr_math.c

@@ -2,26 +2,8 @@
 
 #include "zephr_math.h"
 
-int max(int a, int b) {
-    return a > b ? a : b;
-}
-
-float maxf(float a, float b) {
-    return a > b ? a : b;
-}
-
-float clampf(float value, float min, float max) {
-    if (value < min) {
-        return min;
-    } else if (value > max) {
-        return max;
-    }
-
-    return value;
-}
-
 float to_radians(float degrees) {
-  return degrees * (M_PI / 180.f);
+  return degrees * ((float)M_PI / 180.f);
 }
 
 Matrix4x4 orthographic_projection_2d(float left, float right, float bottom, float top) {
@@ -75,10 +57,10 @@ void apply_scale(Matrix4x4 *matrix, Sizef scale) {
 void apply_rotation(Matrix4x4 *model, float angle) {
   Matrix4x4 temp = identity();
 
-  temp.m[0][0] = cos(angle);
-  temp.m[0][1] = sin(angle);
-  temp.m[1][0] = -sin(angle);
-  temp.m[1][1] = cos(angle);
+  temp.m[0][0] = (float)cos(angle);
+  temp.m[0][1] = (float)sin(angle);
+  temp.m[1][0] = -(float)sin(angle);
+  temp.m[1][1] = (float)cos(angle);
 
   mult_4x4(model, &temp);
 }