pS0
p = z * (pS0 + z * (pS1 + z * (pS2 + z * (pS3 +
p = z * (pS0 + z * (pS1 + z * (pS2 + z * (pS3 +
p = z * (pS0 + z * (pS1 + z * (pS2 + z * (pS3 +
p = t * (pS0 + t * (pS1 + t * (pS2 + t * (pS3 +
p = t * (pS0 + t * (pS1 + t * (pS2 + t * (pS3 + t * (pS4 + t * pS5)))));