Unit 'Math'	Package
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Sum

Return sum of values.

Declaration

Source position: math.pp line 635

function Sum(

const data: array of Single

):Float; function Sum(

const data: PSingle;

const N: LongInt

):Float; function Sum(

const data: array of Double

):Float; function Sum(

const data: PDouble;

const N: LongInt

):Float; function Sum(

const data: array of Extended

):Float; function Sum(

const data: PExtended;

const N: LongInt

):Float;

Description

Sum returns the sum of the values in the data array.

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

Errors

None.

Example

Program Example44;

{ Program to demonstrate the Sum function. }
{ @ should return typed pointer }
{$T+}

Uses math;

Var
  I : 1..100;
  ExArray : Array[1..100] of Float;

begin
  Randomize;
  or:=low(ExArray) to high(ExArray) do
    ExArray[i]:=(Random-Random)*100;
  Writeln('Max     : ',MaxValue(ExArray):8:4);
  Writeln('Min     : ',MinValue(ExArray):8:4);
  Writeln('Sum     : ',Sum(ExArray):8:4);
  Writeln('Sum (b) : ',Sum(@ExArray[1],100):8:4);
end.

sumofsquares		Return sum of squares of values.
sumsandsquares		Return sum and sum of squares of values.
totalvariance		Return total variance of values.
variance		Return variance of values.

Sum

Declaration

Description

Errors

See also

Example