Interpolation/Cubic/Float

Cubic interpolation between four floating point values.
Returns a float

float fCub(float a, float b, float c, float d,float t) {
    float P = (d-c)-(a-b);
    return P*llPow(t,3) + ((a-b)-P)*llPow(t,2) + (c-a)*t + b;
}
// Released into public domain. By Nexii Malthus.