LAPACK  3.6.1
LAPACK: Linear Algebra PACKage
subroutine cscal ( integer  N,
complex  CA,
complex, dimension(*)  CX,
integer  INCX 
)

CSCAL

Purpose:
    CSCAL scales a vector by a constant.
Author
Univ. of Tennessee
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.
Date
November 2011
Further Details:
     jack dongarra, linpack,  3/11/78.
     modified 3/93 to return if incx .le. 0.
     modified 12/3/93, array(1) declarations changed to array(*)

Definition at line 54 of file cscal.f.

54 *
55 * -- Reference BLAS level1 routine (version 3.4.0) --
56 * -- Reference BLAS is a software package provided by Univ. of Tennessee, --
57 * -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
58 * November 2011
59 *
60 * .. Scalar Arguments ..
61  COMPLEX ca
62  INTEGER incx,n
63 * ..
64 * .. Array Arguments ..
65  COMPLEX cx(*)
66 * ..
67 *
68 * =====================================================================
69 *
70 * .. Local Scalars ..
71  INTEGER i,nincx
72 * ..
73  IF (n.LE.0 .OR. incx.LE.0) RETURN
74  IF (incx.EQ.1) THEN
75 *
76 * code for increment equal to 1
77 *
78  DO i = 1,n
79  cx(i) = ca*cx(i)
80  END DO
81  ELSE
82 *
83 * code for increment not equal to 1
84 *
85  nincx = n*incx
86  DO i = 1,nincx,incx
87  cx(i) = ca*cx(i)
88  END DO
89  END IF
90  RETURN