SquaredNorm function

Warning

This documentation refers to the Classic QDK, which has been replaced by the Modern QDK.

Please see https://aka.ms/qdk.api for the API documentation for the Modern QDK.

Namespace: Microsoft.Quantum.Math

Package: Microsoft.Quantum.Standard

Returns the squared 2-norm of a vector.

function SquaredNorm (array : Double[]) : Double

Description

Returns the squared 2-norm of a vector; that is, given an input $\vec{x}$, returns $\sum_i x_i^2$.

Input

array : Double[]

The vector whose squared 2-norm is to be returned.

Output : Double

The squared 2-norm of array.