A remark on algorithm 644: ''A portable package for bessel functions of a complex argument and nonnegative order''

被引：20

作者：

Amos, DE

机构：

来源：

ACM TRANSACTIONS ON MATHEMATICAL SOFTWARE | 1995年 / 21卷 / 04期

关键词：

algorithms; complex airy functions; complex Bessel functions; derivatives of airy functions; H; I; J; K; and Y Bessel functions; log gamma function;

D O I：

10.1145/212066.212078

中图分类号：

TP31 [计算机软件];

学科分类号：

081202 ; 0835 ;

摘要：

Algorithm 644 computes all major Bessel functions of a complex argument and of nonnegative order. Single-precision routine CBESY and double-precision routine ZBESY are modified to reduce the computation time for the Y Bessel function by approximately 25% over a wide range of arguments and orders. Quick check (driver) programs that exercise the package are also modified to make tests more meaningful over larger regions of the complex plane.

引用

页码：388 / 393

页数：6