Jeffrey Walton <noloader@xxxxxxxxx> writes: > I'm testing signed int32 operations (division, modular reduction, and > overflow), and came across a floating point exception: > > int32_t aa = INT32_MIN; > int32_t bb = -1; > int32_t rr = aa % bb; > > cout << rr << " = " << aa << " % " << bb << endl; > > There's not much to the command line: `g++ sitest.cpp -o sitest.exe`. > I was kind of surprised GCC [silently] moved from the integer domain > to the floating point domain. > > Is this expected behavior? Yes. The kernel will raise a SIGFPE signal for the case you show, and also for integer division by zero. No actual floating point operations are occurring, it's just how the kernel reports the problem. Ian
