amos/zshch.f

   1       SUBROUTINE ZSHCH(ZR, ZI, CSHR, CSHI, CCHR, CCHI)
   2 C***BEGIN PROLOGUE  ZSHCH
   3 C***REFER TO  ZBESK,ZBESH
   4 C
   5 C     ZSHCH COMPUTES THE COMPLEX HYPERBOLIC FUNCTIONS CSH=SINH(X+I*Y)
   6 C     AND CCH=COSH(X+I*Y), WHERE I**2=-1.
   7 C
   8 C***ROUTINES CALLED  (NONE)
   9 C***END PROLOGUE  ZSHCH
  10 C
  11       DOUBLE PRECISION CCHI, CCHR, CH, CN, CSHI, CSHR, SH, SN, ZI, ZR,
  12      * DCOSH, DSINH
  13       SH = DSINH(ZR)
  14       CH = DCOSH(ZR)
  15       SN = DSIN(ZI)
  16       CN = DCOS(ZI)
  17       CSHR = SH*CN
  18       CSHI = CH*SN
  19       CCHR = CH*CN
  20       CCHI = SH*SN
  21       RETURN
  22       END