Solved

Division By Zero Exception

Posted on 1997-02-17
11
560 Views
Last Modified: 2012-05-04
How I can implement a Division By Zero exception handling into a DLL function using Borland C/C++ 5.01 both for 32 and 16 bit environment.

Many Thansk.
0
Comment
Question by:erve
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 4
  • 3
  • 3
  • +1
11 Comments
 

Expert Comment

by:looney
ID: 1161991
All I can suggest is using try / catch blocks in your code to handle any errors if they occur.
try
{
pWebInterface_i->writeBack( genBrowseScreen() );
            }
            catch(IKStackException * /*pException*/)
              {
                  //pException->addFunctionInfo("KService::addSession");
                    //comStackException(pException);
               }
               catch(IKAPIException * /*pException*/ )
               {
                  printf("error\n");
                    //comAPIException(pException);
               }
               catch(long int)
               {
                  printf("error\n");
                    //comMemException();
               }
            catch(...)
               {
                  DWORD lastError_i = GetLastError();
                  printf("error\n");
                  //KAPIException *pAPIException = new KAPIException( CLIENT_UNKNOWN_KERRORCODE_APIEXCEPTION );         
          }

Are you looking for some function like _set_new_handler but for divide by zero errors. I don't think one exists.

Tom.
0
 

Expert Comment

by:looney
ID: 1161992
Sorry about the last posting , hit the wrong key combination ...

All I can suggest is using try / catch blocks in your code to handle any errors if they occur.

try
{
   divide by zero code;
}
catch(...)
{
   handle error
}

Are you looking for some function like _set_new_handler but for divide by zero errors. I don't think one exists.

Tom.
0
 

Author Comment

by:erve
ID: 1161993
I have already tryed this kind of solution, but not work.


0
Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 

Expert Comment

by:looney
ID: 1161994
Did you use the (...) notation for the catch statment ?

0
 

Author Comment

by:erve
ID: 1161995
Yes, I use catch(...)
0
 

Author Comment

by:erve
ID: 1161996

0
 
LVL 23

Accepted Solution

by:
chensu earned 200 total points
ID: 1161997
Use the Toolhelp function: InterruptRegister(). The Tool Helper library supports INT_DIV0 (Divide-error exception). Please check with online help for more details.

0
 

Author Comment

by:erve
ID: 1161998
You have some example ?
0
 
LVL 23

Expert Comment

by:chensu
ID: 1161999
You can check with Microsoft Visual C++ 1.x/Samples/Toolhelp/Thsample.c.

0
 
LVL 23

Expert Comment

by:chensu
ID: 1162000
You can also check with the book by Jim Conger from The Waite Group: Windows API New Testament.

0
 

Expert Comment

by:mar10
ID: 1162001
try this:

--- start of example

// needs:
#include <float.h>
#include <signal.h>

typedef void (*SigHandler_T) (int);

// FPE Handler:
void cbSigFPE (int* piRegs)
{
    int iType = ( *((int*)&piRegs+1) );       // FPE_... defined in float.h
    // ...
    signal (SIGFPE, (SigHandler_T)cbSigFPE);  //  reinstall signal handler
}

// install FPE handler:
signal (SIGFPE, (SigHandler_T)cbSigFPE);

--- end of example

Don't use C++ runtime lib funks in signal handlers (semaphore deadlock might occur)

You may also mask out FPEs:
    UINT uExcpt = EM_INVALID|EM_DENORMAL|EM_ZERODIVIDE|EM_OVERFLOW|EM_UNDERFLOW|EM_INEXACT;
    _control87 (uExcpt, MCW_EM);

martin wendt
0

Featured Post

Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Introduction This article is the first in a series of articles about the C/C++ Visual Studio Express debugger.  It provides a quick start guide in using the debugger. Part 2 focuses on additional topics in breakpoints.  Lastly, Part 3 focuses on th…
Many modern programming languages support the concept of a property -- a class member that combines characteristics of both a data member and a method.  These are sometimes called "smart fields" because you can add logic that is applied automaticall…
The goal of the video will be to teach the user the difference and consequence of passing data by value vs passing data by reference in C++. An example of passing data by value as well as an example of passing data by reference will be be given. Bot…
The viewer will learn how to clear a vector as well as how to detect empty vectors in C++.

695 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