float MathAngle (float angle);
float MathAngle (float x1, float y1, float x2, float y2);
float MathAngleDifference (float a1, float a2);
float MathAverage (float n1, float n2);
float MathInterpolate (float n1, float n2, float delta);
float MathLine_distance (float x1, float y1, float x2, float y2, float px, float py);
float MathDistance (float x1, float y1, float x2, float y2);
float MathDistance2 (float x1, float y1, float x2, float y2);
float MathSmoothStep (float val, float a, float b);
float MathScalarCurve (float val);