dscal: Scales a vector by a constant.

In bigalgebra: 'BLAS' and 'LAPACK' Routines for Native R Matrices and 'big.matrix' Objects

Scales a vector by a constant.

Description

Scales a vector by a constant.

Usage

dscal(N = NULL, ALPHA, Y, INCY = 1)

Arguments

N	an integer. Number of elements in input vector(s)
ALPHA	a real number. The scalar alpha
Y	a big matrix to scale by ALPHA
INCY	an integer. Storage spacing between elements of Y.

Value

Update Y.

Examples

set.seed(4669)
A = big.matrix(3, 2, type="double", init=1, dimnames=list(NULL, 
c("alpha", "beta")), shared=FALSE)
dscal(ALPHA=2,Y=A)
A[,]

# The big.matrix file backings will be deleted when garbage collected.
rm(A)
gc()

bigalgebra documentation built on April 8, 2022, 9:07 a.m.