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

norm

Return Euclidian norm

Declaration

Source position: line 0

function norm(

  const data: array [] of float

):float;

function norm(

  const data: PFloat;

  const N: Integer

):float;

Description

Norm calculates the Euclidian 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;

Type
  TVector = Array[1..10] of Float;

Var
  AVector : Tvector;
  I : longint;

begin
 for I:=1 to 10 do
   Avector[i]:=Random;
 Writeln(Norm(AVector));
end.