Solved

Problem with MOD and Integer.

Posted on 2004-08-05
3
194 Views
Last Modified: 2010-08-05
Anyone have a solution to this problem..


Function Tform1.BuildTime(TimeVal: Longint): string;
Var
 BuildStr: String;
 RunTime: Longint;
 RSec,Rhours,Rmins,Rdays: Integer;
Begin
     BuildStr:='';
     RunTime:=TimeVal;
     RDays:=Trunc(RunTime/60/60/24) mod 24 ;
     If (Rdays>1) or (Rdays=0) Then
        BuildStr:=BuildStr+' '+IntToStr(Rdays)+' days, '
         else
        BuildStr:=BuildStr+' '+IntToStr(Rdays)+' day, ';
     RHours:=Trunc(RunTime/60/60) mod 24;
      If (RHours>1) or (RHours=0) Then
        BuildStr:=BuildStr+IntToStr(Rhours)+' Hours, '
         else
        BuildStr:=BuildStr+IntToStr(Rhours)+' Hour, ';
     RMins:=Trunc(RunTime/60) mod 60;
       If (RMins>1) or (RMins=0) Then
       BuildStr:=BuildStr+IntToStr(RMins)+' Minutes, '
        else
       BuildStr:=BuildStr+IntToStr(RMins)+' Minute, ';
    RSec:=Trunc(RunTime) Mod 60;
    If (RSec>1) or (RSec=0) Then
     BuildStr:=BuildStr+IntToStr(RSec)+' Seconds.'
       else
     BuildStr:=BuildStr+IntToStr(RSec)+' Second.';
 Result:=BuildStr;
End;

//some button
Begin
//this gets how long your machine has been running for from
//get tick count
  BuildStr:=BuildTime(Trunc(GetTickCount/1000));
  ShowMessage(BuildStr);
End;

Problem is, after 22 days or so, MOD fails and goes back to 0

try  60 * 60 * 24 * 30  //60 seconds * 60 minutes * 24 hours * 30 days

And the result should be 30 day, the routine screws up giving something like 4 days, anyone know how solve this?
0
Comment
Question by:tobjectpascal
3 Comments
 
LVL 12

Expert Comment

by:Ivanov_G
Comment Utility
0
 
LVL 26

Assisted Solution

by:Russell Libby
Russell Libby earned 100 total points
Comment Utility

Seems like RDays should be the following

RDays:=Trunc(RunTime / 60 / 60 / 24) ;

Where instead, you are dividing by 24 and then mod'ing by 24 (dividing will get the number of days, mod'ing will return the hours)

Regards,
Russell
0
 
LVL 12

Accepted Solution

by:
esoftbg earned 25 total points
Comment Utility
as rllibby wrote above:

function  Tform1.BuildTime(TimeVal: Int64): string;
var
  BuildStr:      string;
  RunTime:       Int64;
  RSec,Rhours,
  Rmins,Rdays:   Int64;
begin
  BuildStr := '';
  RunTime := TimeVal;
  RDays := Trunc(RunTime/60/60/24);
  if (Rdays=1) then
    BuildStr := BuildStr+' '+IntToStr(Rdays)+' day, '
  else
    BuildStr := BuildStr+' '+IntToStr(Rdays)+' days, ';
  RHours := Trunc(RunTime/60/60) mod 24;
  if (RHours=1) then
    BuildStr := BuildStr+IntToStr(Rhours)+' Hour, '
  else
    BuildStr := BuildStr+IntToStr(Rhours)+' Hours, ';
  RMins := Trunc(RunTime/60) mod 60;
  if (RMins=1) then
    BuildStr := BuildStr+IntToStr(RMins)+' Minute, '
  else
    BuildStr := BuildStr+IntToStr(RMins)+' Minutes, ';
  RSec := Trunc(RunTime/1) mod 60;
  if (RSec=1) then
    BuildStr := BuildStr+IntToStr(RSec)+' Second.'
  else
    BuildStr := BuildStr+IntToStr(RSec)+' Seconds.';
  Result := BuildStr;
end;

The poits are for rllibby, I just wrote it as code
0

Featured Post

Why You Should Analyze Threat Actor TTPs

After years of analyzing threat actor behavior, it’s become clear that at any given time there are specific tactics, techniques, and procedures (TTPs) that are particularly prevalent. By analyzing and understanding these TTPs, you can dramatically enhance your security program.

Join & Write a Comment

This article explains how to create forms/units independent of other forms/units object names in a delphi project. Have you ever created a form for user input in a Delphi project and then had the need to have that same form in a other Delphi proj…
Objective: - This article will help user in how to convert their numeric value become words. How to use 1. You can copy this code in your Unit as function 2. than you can perform your function by type this code The Code   (CODE) The Im…
Internet Business Fax to Email Made Easy - With eFax Corporate (http://www.enterprise.efax.com), you'll receive a dedicated online fax number, which is used the same way as a typical analog fax number. You'll receive secure faxes in your email, fr…
This video gives you a great overview about bandwidth monitoring with SNMP and WMI with our network monitoring solution PRTG Network Monitor (https://www.paessler.com/prtg). If you're looking for how to monitor bandwidth using netflow or packet s…

744 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

13 Experts available now in Live!

Get 1:1 Help Now