double fVal, fTemp;
fTemp = filesize; /* filesize is a long long and is
greater than 0 */
fVal = 100.0 / (double) fTemp; /* EXC_ARITHMETIC happens here */
The debugger stop and throws EXC_ARITHMETIC message at the
calculation line. When the program is in release mode(compile with
-O2), this problem never happens during runtime. I am using OS
10.4.3 (8F1111).
What condition makes EXC_ARITHMETIC exception to be thrown under
Pentium ?
I suspect that a memory-allocation problem elsewhere has trashed
the 'filesize' variable such that it no longer contains a valid
numerical value. Try printing it out.
Also note that x86 fpu exceptions are not necessarily precise, unless
you add an "fwait" after each fpu operation (which I don't expect GCC
to do). It's possible that this exception was actually caused by the
previous fpu operation the program performed, but that it's triggered
here.
Jonas
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