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IMSL Name:  BSY0/DBSY0 (Single/Double precision version)
 
Revised:    May 29, 1991
 
Purpose:    Evaluate the Bessel function of the second kind of
            order zero.
 
Usage:      BSY0(X)
 
Arguments:
   X      - Argument for which the function value is desired.
            (Input)
   BSY0   - Function value.  (Output)
 
GAMS:       C10a1
 
Chapter:    SFUN/LIBRARY Bessel Functions
 
Page No.:   SFUN/LIBRARY User's Manual page 102