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Mise à jour globale de Lapack 3.2.2.

    1:       SUBROUTINE ZAXPY(N,ZA,ZX,INCX,ZY,INCY)
    2: *     .. Scalar Arguments ..
    3:       DOUBLE COMPLEX ZA
    4:       INTEGER INCX,INCY,N
    5: *     ..
    6: *     .. Array Arguments ..
    7:       DOUBLE COMPLEX ZX(*),ZY(*)
    8: *     ..
    9: *
   10: *  Purpose
   11: *  =======
   12: *
   13: *     ZAXPY constant times a vector plus a vector.
   14: *
   15: *  Further Details
   16: *  ===============
   17: *
   18: *     jack dongarra, 3/11/78.
   19: *     modified 12/3/93, array(1) declarations changed to array(*)
   20: *
   21: *  =====================================================================
   22: *
   23: *     .. Local Scalars ..
   24:       INTEGER I,IX,IY
   25: *     ..
   26: *     .. External Functions ..
   27:       DOUBLE PRECISION DCABS1
   28:       EXTERNAL DCABS1
   29: *     ..
   30:       IF (N.LE.0) RETURN
   31:       IF (DCABS1(ZA).EQ.0.0d0) 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:           ZY(IY) = ZY(IY) + ZA*ZX(IX)
   43:           IX = IX + INCX
   44:           IY = IY + INCY
   45:    10 CONTINUE
   46:       RETURN
   47: *
   48: *        code for both increments equal to 1
   49: *
   50:    20 DO 30 I = 1,N
   51:           ZY(I) = ZY(I) + ZA*ZX(I)
   52:    30 CONTINUE
   53:       RETURN
   54:       END