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clVector.NormL2 Method (TOpenCLMtxVec, boolean)
clVector Record | clVector Members | clMtxExpr Namespace | NormL2 Method | Example | See Also
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The L2-norm.

Pascal
function NormL2(const Vec: TOpenCLMtxVec; RelativeError: boolean = False): double; overload;
Returns

L2 norm, defined by ||V-Vec||, where V is calling vector.

Description

If the NormL2 is called without any parameters, the NormL2 calculates the norm of calling vector. The L2 norm of ||V-Vec|| is defined by the formula: 

 

 

If RelativeError is true then the computed norm is divided by the norm of V, and the function returns the "relative error": 

 

 

 

See Also
Example
var a,b: clVector; c: double; begin a.CopyFromArray( TDoubleArray.Create(1,2,3,4)); b.CopyFromArray( TDoubleArray.Create(4,3,2,1)); c := a.NormL2(b,True); end;
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