Returns the binomial coefficient of n choose k.
Computes the logarithm of x with base defined by the entropy type.
Returns the error function of x using either the Abramowitz and Stegun approximation or the Taylor series approximation.
Returns the error function of x using the Abramowitz and Stegun approximation with 6 terms.
Returns the complementary error function of x using either the Abramowitz and Stegun approximation or the Taylor series approximation.
Returns the factorial of n.