[Overview][Constants][Types][Classes][Procedures and functions][Index] Reference for unit 'Math' (#rtl)

Norm

Return Euclidean norm

Declaration

Source position: math.pp line 543

function Norm(

  const data: array of Single

):Float;

function Norm(

  const data: PSingle;

  const N: Integer

):Float;

function Norm(

  const data: array of Double

):Float;

function Norm(

  const data: PDouble;

  const N: Integer

):Float;

function Norm(

  const data: array of Extended

):Float;

function Norm(

  const data: PExtended;

  const N: Integer

):Float;

Description

Norm calculates the Euclidean norm of the array of data. This equals sqrt(sumofsquares(data)).

The second form accepts a pointer to an array of N values.

Errors

None.

See also

sumofsquares

  

Return sum of squares of values

Example

program Example33;

{ Program to demonstrate the norm function. }

uses math;

var v:array[1..10] of Float;
    I:1..10;

begin
  for I:=low(v) to high(v) do
    v[i]:=random;
  writeln(norm(v));
end.

Documentation generated on: May 14 2021