ESBYesterday Function
A Speed Optimised Routine to get the Yesterday's Date.

Unit
QESBPCSDateTime

Declaration
Function ESBYesterday: TDateTime;

Description
Time Portion is Zero.

Category
Date/Time Arithmetic Routines

Implementation

function ESBYesterday: TDateTime;
{$IFDEF MSWINDOWS}
var
     ST: TSystemTime;
begin
     Windows.GetLocalTime (ST);
     Result := OptEncodeDateW (ST.wYear, ST.wMonth, ST.wDay) - 1;
end;
{$ENDIF}
{$IFDEF LINUX}
var
     T: TTime_T;
     UT: TUnixTime;
begin
     __time (@T);
     localtime_r (@T, UT);
     Result := OptEncodeDateI (UT.tm_year + 1900, UT.tm_mon + 1, UT.tm_mday) - 1;
End;


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