Special Functions

• bessel Bessel functions of the third kind (aka Hankel functions)
• beta beta function
• calerf computes error functions.
• dlgamma derivative of gammaln function, psi function
• erf The error function.
• erfc The complementary error function.
• erfcx scaled complementary error function.
• erfinv inverse error function
• gamma The gamma function.
• gammaln The logarithm of gamma function.
• legendre associated Legendre functions