org.ejml.ops

Class CNormOps

java.lang.Object

org.ejml.ops.CNormOps

public class CNormOps
extends java.lang.Object

Constructor Summary

Constructors

Constructor and Description
CNormOps()

Method Summary

Modifier and Type	Method and Description
static double	normF(CDenseMatrix64F a) Computes the Frobenius matrix norm: normF = Sqrt{ ∑i=1:m ∑j=1:n { aij2} }

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

CNormOps

public CNormOps()

Method Detail

normF

public static double normF(CDenseMatrix64F a)

Computes the Frobenius matrix norm:

normF = Sqrt{ ∑_i=1:m ∑_j=1:n { a_ij²} }

This is equivalent to the element wise p=2 norm. See #fastNormF for another implementation that is faster, but more prone to underflow/overflow errors.

Parameters:

a - The matrix whose norm is computed. Not modified.

Returns:

The norm's value.