zmlt.f

Go to the documentation of this file.

      SUBROUTINE zmlt(AR, AI, BR, BI, CR, CI)
C***BEGIN PROLOGUE  ZMLT
C***REFER TO  ZBESH,ZBESI,ZBESJ,ZBESK,ZBESY,ZAIRY,ZBIRY
C
C     DOUBLE PRECISION COMPLEX MULTIPLY, C=A*B.
C
C***ROUTINES CALLED  (NONE)
C***END PROLOGUE  ZMLT
      DOUBLE PRECISION AR, AI, BR, BI, CR, CI, CA, CB
      ca = ar*br - ai*bi
      cb = ar*bi + ai*br
      cr = ca
      ci = cb
      RETURN
      END