Distance between two points in 3D

/*
    @info: retrieves the distance between point 1 and point 2 (third dimension).
    @author: the creator of the third dimension.
*/
float distance3d(float px, float py, float pz, float dx, float dy, float dz)
{
    return sqrtf(powf(dx - px, 2.0f) + powf(dy - py, 2.0f) + powf(dz - pz, 2.0f));
}