01:       COMPLEX FUNCTION CDOTU(N,CX,INCX,CY,INCY)
02: *     .. Scalar Arguments ..
03:       INTEGER INCX,INCY,N
04: *     ..
05: *     .. Array Arguments ..
06:       COMPLEX CX(*),CY(*)
07: *     ..
08: *
09: *  Purpose
10: *  =======
11: *
12: *     CDOTU forms the dot product of two vectors.
13: *
14: *  Further Details
15: *  ===============
16: *
17: *     jack dongarra, linpack, 3/11/78.
18: *     modified 12/3/93, array(1) declarations changed to array(*)
19: *
20: *     .. Local Scalars ..
21:       COMPLEX CTEMP
22:       INTEGER I,IX,IY
23: *     ..
24:       CTEMP = (0.0,0.0)
25:       CDOTU = (0.0,0.0)
26:       IF (N.LE.0) RETURN
27:       IF (INCX.EQ.1 .AND. INCY.EQ.1) GO TO 20
28: *
29: *        code for unequal increments or equal increments
30: *          not equal to 1
31: *
32:       IX = 1
33:       IY = 1
34:       IF (INCX.LT.0) IX = (-N+1)*INCX + 1
35:       IF (INCY.LT.0) IY = (-N+1)*INCY + 1
36:       DO 10 I = 1,N
37:           CTEMP = CTEMP + CX(IX)*CY(IY)
38:           IX = IX + INCX
39:           IY = IY + INCY
40:    10 CONTINUE
41:       CDOTU = CTEMP
42:       RETURN
43: *
44: *        code for both increments equal to 1
45: *
46:    20 DO 30 I = 1,N
47:           CTEMP = CTEMP + CX(I)*CY(I)
48:    30 CONTINUE
49:       CDOTU = CTEMP
50:       RETURN
51:       END
52: