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