Algorithm 421: complex gamma function with error control [S14]
- 1 April 1972
- journal article
- Published by Association for Computing Machinery (ACM) in Communications of the ACM
- Vol. 15 (4), 271-272
- https://doi.org/10.1145/361284.361298
Abstract
This Fortran program computes either the gamma function or the loggamma function of a complex variable in double precision. In addition, it provides an error estimate of the computed answer. The calling sequences are: CALL CDLGAM ( Z, W, E , 0) for the loggamma, and CALL CDLGAM ( Z, W, E , 1) for the gamma, where Z is the double precision complex argument, W is the answer of the same type, and E is a single precision real variable. Before the call, the value of E is an estimate of the error in Z , and after the call, it is an estimate of the error in W .Keywords
This publication has 1 reference indexed in Scilit:
- Complex gamma function with error controlCommunications of the ACM, 1972