# An effective algorithm for calculating the Chandrasekhar function

## Description

Abstract Numerical values of the Chandrasekhar function are needed with high accuracy in evaluations of theoretical models describing electron transport in condensed matter. An algorithm for such calculations should be possibly fast and also accurate, e.g. an accuracy of 10 decimal digits is needed for some applications. Two of the integral representations of the Chandrasekhar function are prospective for constructing such an algorithm, but suitable transformations are needed to obtain a rapidly conve... Title of program: CHANDRAS Catalogue Id: AEMC_v1_0 Nature of problem An attempt has been made to develop a subroutine that calculates the Chandrasekhar function with high accuracy, of at least 10 decimal places. Simultaneously, this subroutine should be very fast. Both requirements stem from the theory of electron transport in condensed matter. Versions of this program held in the CPC repository in Mendeley Data AEMC_v1_0; CHANDRAS; 10.1016/j.cpc.2012.02.022 AEMC_v2_0; CHANDRAS_v2; 10.1016/j.cpc.2012.08.020 This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2018)