01:       SUBROUTINE CAXPY(N,CA,CX,INCX,CY,INCY)
02: *     .. Scalar Arguments ..
03:       COMPLEX CA
04:       INTEGER INCX,INCY,N
05: *     ..
06: *     .. Array Arguments ..
07:       COMPLEX CX(*),CY(*)
08: *     ..
09: *
10: *  Purpose
11: *  =======
12: *
13: *     CAXPY constant times a vector plus a vector.
14: *
15: *  Further Details
16: *  ===============
17: *
18: *     jack dongarra, linpack, 3/11/78.
19: *     modified 12/3/93, array(1) declarations changed to array(*)
20: *
21: *     .. Local Scalars ..
22:       INTEGER I,IX,IY
23: *     ..
24: *     .. External Functions ..
25:       REAL SCABS1
26:       EXTERNAL SCABS1
27: *     ..
28:       IF (N.LE.0) RETURN
29:       IF (SCABS1(CA).EQ.0.0E+0) RETURN
30:       IF (INCX.EQ.1 .AND. INCY.EQ.1) GO TO 20
31: *
32: *        code for unequal increments or equal increments
33: *          not equal to 1
34: *
35:       IX = 1
36:       IY = 1
37:       IF (INCX.LT.0) IX = (-N+1)*INCX + 1
38:       IF (INCY.LT.0) IY = (-N+1)*INCY + 1
39:       DO 10 I = 1,N
40:           CY(IY) = CY(IY) + CA*CX(IX)
41:           IX = IX + INCX
42:           IY = IY + INCY
43:    10 CONTINUE
44:       RETURN
45: *
46: *        code for both increments equal to 1
47: *
48:    20 DO 30 I = 1,N
49:           CY(I) = CY(I) + CA*CX(I)
50:    30 CONTINUE
51:       RETURN
52:       END
53: