--- rpl/lapack/blas/zaxpy.f 2010/12/21 13:51:26 1.6 +++ rpl/lapack/blas/zaxpy.f 2011/07/22 07:38:02 1.7 @@ -29,26 +29,28 @@ * .. IF (N.LE.0) RETURN IF (DCABS1(ZA).EQ.0.0d0) RETURN - IF (INCX.EQ.1 .AND. INCY.EQ.1) GO TO 20 + IF (INCX.EQ.1 .AND. INCY.EQ.1) THEN +* +* code for both increments equal to 1 +* + DO I = 1,N + ZY(I) = ZY(I) + ZA*ZX(I) + END DO + ELSE * * code for unequal increments or equal increments * not equal to 1 * - 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 - ZY(IY) = ZY(IY) + ZA*ZX(IX) - IX = IX + INCX - IY = IY + INCY - 10 CONTINUE - RETURN -* -* code for both increments equal to 1 + IX = 1 + IY = 1 + IF (INCX.LT.0) IX = (-N+1)*INCX + 1 + IF (INCY.LT.0) IY = (-N+1)*INCY + 1 + DO I = 1,N + ZY(IY) = ZY(IY) + ZA*ZX(IX) + IX = IX + INCX + IY = IY + INCY + END DO + END IF * - 20 DO 30 I = 1,N - ZY(I) = ZY(I) + ZA*ZX(I) - 30 CONTINUE RETURN END