airy	Airy functions
besselh	Bessel functions of the third kind (Hankel functions)
besseli, besselk	Modified Bessel functions
besselj, bessely	Bessel functions
beta, betainc, betaln	Beta functions
ellipj	Jacobi elliptic functions
ellipke	Complete elliptic integrals of the first and second kind
erf, erfc, erfcx, erfinv	Error functions
expint	Exponential integral
gamma, gammainc, gammaln	Gamma functions
legendre	Associated Legendre functions
pow2	Base 2 power and scale floating-point numbers
rat, rats	Rational fraction approximation