subroutine dscal (N, DA, DX, INCX)
DSCAL
DSCAL
Purpose:
DSCAL scales a vector by a constant. uses unrolled loops for increment equal to 1.
Parameters:
N is INTEGER number of elements in input vector(s)
DA
DA is DOUBLE PRECISION On entry, DA specifies the scalar alpha.
DX
DX is DOUBLE PRECISION array, dimension ( 1 + ( N - 1 )*abs( INCX ) )
INCX
INCX is INTEGER storage spacing between elements of DX
Author:
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.
Date:
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 81 of file dscal.f.
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