ddot: Dot product of two vectors

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

Dot product of two vectors

Description

Dot product of two vectors

Usage

ddot(N = NULL, X, INCX = 1L, Y, INCY = 1L)

Arguments

N	Optional integer giving the number of elements. Defaults to 'length(X)'.
X	Double-precision vector, matrix or ['bigmemory::big.matrix'] input.
INCX	Integer stride for traversing 'X'.
Y	Double-precision object updated in place.
INCY	Integer stride for traversing 'Y'.

Value

Numeric scalar containing the dot product.

Examples

ddot(X = 1:3, Y = c(2, 4, 6))

bigalgebra documentation built on Sept. 9, 2026, 5:12 p.m.