s18acf

s18acf © Numerical Algorithms Group, 2002.

Purpose

S18ACF Modified Bessel function K (x) 0

Synopsis

[fun_value,ifail] = s18acf(x<,ifail>)

Description

 
 This routine evaluates an approximation to the modified Bessel 
 Function of the second kind K (x).
                              0   
 
 Note: K (x) is undefined for x<=0 and the routine will fail for 
        0                                                       
 such arguments.

Parameters

s18acf

Required Input Arguments:

x                                     real

Optional Input Arguments:                       <Default>

ifail                                 integer  -1

Output Arguments:

ifail                                 integer