gerard robin wrote:
> Yes it is difficult to trap these nan which are coming ( + or -
> randomly ? ? ? , though, getting trouble with carrier) ), and when we get it
> the system is closed to be frozen , with black screen, and command line
> overflowed with messages.
> And when i tried with GDB i did not got any NAN "?????"
You might want to try to comment out line 66 of src/Main/bootstrap.cxx
in such case. It'll then throw an exception and a core dump which could
be analysed:
static void
initFPE ()
{
fpu_control_t fpe_flags = 0;
_FPU_GETCW(fpe_flags);
fpe_flags &= ~_FPU_MASK_IM; // invalid operation
// fpe_flags &= ~_FPU_MASK_DM; // denormalized operand
// fpe_flags &= ~_FPU_MASK_ZM; // zero-divide
// fpe_flags &= ~_FPU_MASK_OM; // overflow
// fpe_flags &= ~_FPU_MASK_UM; // underflow
// fpe_flags &= ~_FPU_MASK_PM; // precision (inexact result)
_FPU_SETCW(fpe_flags);
signal(SIGFPE, handleFPE);
}
Erik
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