SLATEC Routines --- ZACON ---

*DECK ZACON
      SUBROUTINE ZACON (ZR, ZI, FNU, KODE, MR, N, YR, YI, NZ, RL, FNUL,
     +   TOL, ELIM, ALIM)
C***BEGIN PROLOGUE  ZACON
C***SUBSIDIARY
C***PURPOSE  Subsidiary to ZBESH and ZBESK
C***LIBRARY   SLATEC
C***TYPE      ALL (CACON-A, ZACON-A)
C***AUTHOR  Amos, D. E., (SNL)
C***DESCRIPTION
C
C     ZACON APPLIES THE ANALYTIC CONTINUATION FORMULA
C
C         K(FNU,ZN*EXP(MP))=K(FNU,ZN)*EXP(-MP*FNU) - MP*I(FNU,ZN)
C                 MP=PI*MR*CMPLX(0.0,1.0)
C
C     TO CONTINUE THE K FUNCTION FROM THE RIGHT HALF TO THE LEFT
C     HALF Z PLANE
C
C***SEE ALSO  ZBESH, ZBESK
C***ROUTINES CALLED  D1MACH, ZABS, ZBINU, ZBKNU, ZMLT, ZS1S2
C***REVISION HISTORY  (YYMMDD)
C   830501  DATE WRITTEN
C   910415  Prologue converted to Version 4.0 format.  (BAB)
C***END PROLOGUE  ZACON