R3tr0BoiDX

float fract(float x) { return x - (int) x; }

float mix(float a, float b, float t) { return a + (b - a) * t; }

float step(float e, float x) { return x < e ? 0.0f : 1.0f; }

float constrain(float x, float low, float high) { return ((x) < (low) ? (low) : ((x) > (high) ? (high) : (x))); }

float min(float a, float b) { return (a > b) ? b : a; }