C***BEGIN PROLOGUE  ZWRSK
C***SUBSIDIARY
C***PURPOSE  Subsidiary to ZBESI and ZBESK
C***LIBRARY   SLATEC
C***TYPE      ALL (CWRSK-A, ZWRSK-A)
C***AUTHOR  Amos, D. E., (SNL)
C***DESCRIPTION
C
C     ZWRSK COMPUTES THE I BESSEL FUNCTION FOR RE(Z).GE.0.0 BY
C     NORMALIZING THE I FUNCTION RATIOS FROM ZRATI BY THE WRONSKIAN
C
C***SEE ALSO  ZBESI, ZBESK
C***ROUTINES CALLED  D1MACH, ZABS, ZBKNU, ZRATI
C***REVISION HISTORY  (YYMMDD)
C   830501  DATE WRITTEN
C   910415  Prologue converted to Version 4.0 format.  (BAB)
C***END PROLOGUE  ZWRSK