BSK0E
This function evaluates the exponentially scaled modified Bessel function of the second kind of order zero.
Function Return Value
BSK0E — Function value. (Output)
Required Arguments
X — Argument for which the function value is desired. (Input)
FORTRAN 90 Interface
Generic: BSK0E (X)
Specific: The specific interface names are S_BSK0E and D_BSK0E.
FORTRAN 77 Interface
Single: BSK0E (X)
Double: The double precision function name is DBSK0E.
Description
Function
BSK0E computes e
xK0(
x). For the definition of the Bessel function
K0(
x), see
BSK0. The argument must be greater than zero for the result to be defined.
Example
In this example, BSK0E(0.5) is computed and printed.
USE BSK0E_INT
USE UMACH_INT
IMPLICIT NONE
! Declare variables
INTEGER NOUT
REAL VALUE, X
! Compute
X = 0.5
VALUE = BSK0E(X)
! Print the results
CALL UMACH (2, NOUT)
WRITE (NOUT,99999) X, VALUE
99999 FORMAT (' BSK0E(', F6.3, ') = ', F6.3)
END
Output
BSK0E( 0.500) = 1.524
