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En route pour la 4.0.15 !

    1:       DOUBLE COMPLEX FUNCTION ZDOTC(N,ZX,INCX,ZY,INCY)
    2: *     .. Scalar Arguments ..
    3:       INTEGER INCX,INCY,N
    4: *     ..
    5: *     .. Array Arguments ..
    6:       DOUBLE COMPLEX ZX(*),ZY(*)
    7: *     ..
    8: *
    9: *  Purpose
   10: *  =======
   11: *
   12: *  ZDOTC forms the dot product of a vector.
   13: *
   14: *  Further Details
   15: *  ===============
   16: *
   17: *     jack dongarra, 3/11/78.
   18: *     modified 12/3/93, array(1) declarations changed to array(*)
   19: *
   20: *  =====================================================================
   21: *
   22: *     .. Local Scalars ..
   23:       DOUBLE COMPLEX ZTEMP
   24:       INTEGER I,IX,IY
   25: *     ..
   26: *     .. Intrinsic Functions ..
   27:       INTRINSIC DCONJG
   28: *     ..
   29:       ZTEMP = (0.0d0,0.0d0)
   30:       ZDOTC = (0.0d0,0.0d0)
   31:       IF (N.LE.0) RETURN
   32:       IF (INCX.EQ.1 .AND. INCY.EQ.1) GO TO 20
   33: *
   34: *        code for unequal increments or equal increments
   35: *          not equal to 1
   36: *
   37:       IX = 1
   38:       IY = 1
   39:       IF (INCX.LT.0) IX = (-N+1)*INCX + 1
   40:       IF (INCY.LT.0) IY = (-N+1)*INCY + 1
   41:       DO 10 I = 1,N
   42:           ZTEMP = ZTEMP + DCONJG(ZX(IX))*ZY(IY)
   43:           IX = IX + INCX
   44:           IY = IY + INCY
   45:    10 CONTINUE
   46:       ZDOTC = ZTEMP
   47:       RETURN
   48: *
   49: *        code for both increments equal to 1
   50: *
   51:    20 DO 30 I = 1,N
   52:           ZTEMP = ZTEMP + DCONJG(ZX(I))*ZY(I)
   53:    30 CONTINUE
   54:       ZDOTC = ZTEMP
   55:       RETURN
   56:       END