Smith, David M. Algorithm 911: Multiple-precision exponential integral and related functions. (English) Zbl 1365.65050 ACM Trans. Math. Softw. 37, No. 4, Article No. 46, 16 p. (2011). MSC: 65D20 Computation of special functions and constants, construction of tables 33-04 Software, source code, etc. for problems pertaining to special functions 33F05 Numerical approximation and evaluation of special functions 65Y15 Packaged methods for numerical algorithms Keywords:accuracy; Fortran; exponential integral function; floating point; function evaluation; mathematical library; multiple precision; portable software Software:Algorithm 911; Algorithm 814; Algorithm 719; Algorithm 786; Algorithm 693; gmp; MPFR PDFBibTeX XMLCite \textit{D. M. Smith}, ACM Trans. Math. Softw. 37, No. 4, Article No. 46, 16 p. (2011; Zbl 1365.65050) Full Text: DOI