I have a situation where some floating point operations are generating
underflows resulting in floating point assist traps. I can easily turn on
the the signals with feenableexcept(FE_ALL_EXCEPT) or one of the related
functions. I did notice that Steven Hatton discussed this about 2 years ago
on another list, but I did not see a Linux resolution.
Specifically, what I want to do is:
double d = <init value>;
try {
a /= 2; // divide by 2 to cause an underflow
} catch(some exception) {
// handle exception
}
One solution here is to set up a signal handler that throws an exception.
That is messy, but it will do the job.
--
Jerry Feldman <gaf(a)blu.org>
Boston Linux and Unix user group
http://www.blu.org PGP key id:C5061EA9
PGP Key fingerprint:053C 73EC 3AC1 5C44 3E14 9245 FB00 3ED5 C506 1EA9
