SecondsBetween

Calculate the number of whole seconds between two DateTime values.

Declaration

Source position: dateutil.inc line 261

function SecondsBetween(

const ANow: TDateTime;

const AThen: TDateTime

):Int64;

Arguments

`ANow`		First moment in time
`AThen`		Second moment in time

Function result

Number of seconds between ANow and AThen

Description

SecondsBetween returns the number of whole seconds between ANow and AThen. This means the fractional part of a second (milliseconds etc.) is dropped.

YearsBetween		Calculate the number of whole years between two DateTime values
MonthsBetween		Calculate the number of whole months between two DateTime values
WeeksBetween		Calculate the number of whole weeks between two DateTime values
DaysBetween		Number of whole days between two DateTime values.
HoursBetween		Calculate the number of whole hours between two DateTime values.
MinutesBetween		Calculate the number of whole minutes between two DateTime values.
MilliSecondsBetween		Calculate the number of whole milliseconds between two DateTime values.

Example

Program Example61;

{ This program demonstrates the SecondsBetween function }

Uses SysUtils,DateUtils;

Procedure Test(ANow,AThen : TDateTime);

begin
 Write('Number of seconds between ');
 Write(TimeToStr(AThen),' and ',TimeToStr(ANow));
 Writeln(' : ',SecondsBetween(ANow,AThen));
end;

Var
  D1,D2 : TDateTime;

Begin
  D1:=Now;
  D2:=D1-(999*OneMilliSecond);
  Test(D1,D2);
  D2:=D1-(1001*OneMilliSecond);
  Test(D1,D2);
  D2:=D1-(2001*OneMilliSecond);
  Test(D1,D2);
  D2:=D1-(5001*OneMilliSecond);
  Test(D1,D2);
  D2:=D1-(5.4*OneSecond);
  Test(D1,D2);
  D2:=D1-(2.5*OneSecond);
  Test(D1,D2);
End.