Manual Reference Pages - besj0 (3)
NAME
besj0(3f) - [M_bessel] calculates the Bessel function J(X) of order zero.
CONTENTS
Synopsis
Description
Options
Authors
Example
SYNOPSIS
function besj0(xx)
DESCRIPTION
Series evaluation is used for small arguments, recurrence techniques are used for midrange, and Hankel-S Asymptotic Expansion is used for large arguments. Accuracy is between thirteen and fourteen correct significant figures except for large arguments where the accuracy eventually falls to eight figures.
OPTIONS
XX may be any doubleprecision argument.
AUTHORS
Originally from
Sandia Mathematical Program Library Applied Mathematics Division 2642 Sandia Laboratories P. O. box 5800 Albuquerque, new Mexico 87115 Control Data 6600 Version 5.1, 10 December 1973Written by Ronald D. Halbgewachs, October 1,1971.
IMPLEMENTATION
minor changes have been made to improve the portability or to confirm to modern Fortran standards
EXAMPLE
| besj0 (3) | October 17, 2020 |
