This is documentation for Mathematica 8, which was
based on an earlier version of the Wolfram Language.
View current documentation (Version 11.1)
Error and Exponential Integral Functions
Using original algorithms developed at Wolfram Research, Mathematica evaluates error and exponential integral functions anywhere in the complex plane, to arbitrary precision—as well as supporting series expansions with careful attention to branch cuts, and an extensive web of symbolic transformations.
Error Functions
Erf  ▪ Erfc  ▪ Erfi  ▪ InverseErf  ▪ InverseErfc  ▪ DawsonF
Exponential Integrals
Fresnel Functions
Trigonometric & Hyperbolic Integrals