      COMPLEX FUNCTION CDOTC(N,CX,INCX,CY,INCY)
C
C     FORMS THE DOT PRODUCT OF TWO VECTORS, CONJUGATING THE FIRST
C     VECTOR.
C     JACK DONGARRA, LINPACK,  3/11/78.
C
      COMPLEX CX(1),CY(1),CTEMP
      INTEGER I,INCX,INCY,IX,IY,N
C
      CTEMP = (0.0,0.0)
      CDOTC = (0.0,0.0)
      IF(N.LE.0)RETURN
      IF(INCX.EQ.1.AND.INCY.EQ.1)GO TO 20
C
C        CODE FOR UNEQUAL INCREMENTS OR EQUAL INCREMENTS
C          NOT EQUAL TO 1
C
      IX = 1
      IY = 1
      IF(INCX.LT.0)IX = (-N+1)*INCX + 1
      IF(INCY.LT.0)IY = (-N+1)*INCY + 1
      DO 10 I = 1,N
        CTEMP = CTEMP + CONJG(CX(IX))*CY(IY)
        IX = IX + INCX
        IY = IY + INCY
   10 CONTINUE
      CDOTC = CTEMP
      RETURN
C
C        CODE FOR BOTH INCREMENTS EQUAL TO 1
C
   20 DO 30 I = 1,N
        CTEMP = CTEMP + CONJG(CX(I))*CY(I)
   30 CONTINUE
      CDOTC = CTEMP
      RETURN
      END
