Handling Floating Point Exception in VC++ 6.0
I've been trying to handle floating point exceptions but I am having some
problems.
Basically I am able to catch the exception with the catch(...), I wrote a
class that should be thrown but it is not working.
I basically coded the following class
FloatException::FloatException( int nSubCode )
{
subCode = nSubCode;
_fpreset();
}
void FloatException::FloatExceptionHandler( int sig, int nSubCode )
{
throw( new FloatException( nSubCode ) );
}
void FloatException::SetFloatExceptionHandler()
{
// Get the current floating point control word.
//unsigned int uWord = _controlfp( 0, 0 );
unsigned int uWord = 0;
// Set the exceptions we want
uWord |= _EM_UNDERFLOW;
uWord |= _EM_OVERFLOW;
uWord |= _EM_ZERODIVIDE;
uWord |= _EM_INVALID;
_controlfp(uWord, _MCW_EM);
uWord = _controlfp( 0, 0 );
// Set the exception handler.
signal( SIGFPE, (void (__cdecl*)(int))FloatExceptionHandler );
}
in the main code I do this
FloatException::SetFloatExceptionHandler();
try
{
double temp = exp(99999999);
}
catch(FloatException& e)
{
}
catch(...)
{
}
the problem is that it never hits the FloatException catch, and it never
executes the FloatExceptionHandler. it does get caught in the catch(...)
which didn't do before I wrote the code.
Is there something I am missing? Is there a better way to do floating point
exception.
I am running Windows XP on a Xeon. Does the processor matter?