ittjya Subroutine

public subroutine ittjya(x, ttj, tty)

************80

! ITTJYA integrates (1-J0(t))/t from 0 to x, and Y0(t)/t from x to infinity.

Licensing:

This routine is copyrighted by Shanjie Zhang and Jianming Jin.  However, 
they give permission to incorporate this routine into a user program 
provided that the copyright is acknowledged.

Modified:

28 July 2012

Author:

Shanjie Zhang, Jianming Jin

Reference:

Shanjie Zhang, Jianming Jin,
Computation of Special Functions,
Wiley, 1996,
ISBN: 0-471-11963-6,
LC: QA351.C45.

Parameters:

Input, real ( kind = 8 ) X, the integral limit.

Output, real ( kind = 8 ) TTJ, TTY, the integrals of [1-J0(t)]/t 
from 0 to x and of Y0(t)/t from x to oo.

Arguments

Type IntentOptional Attributes Name
real(kind=8) :: x
real(kind=8) :: ttj
real(kind=8) :: tty