floating point control in extensions

[Robin Becker]

Is there a preferred way to intercept floating point exceptions in
python extensions? I assume one should be careful to restore any
existing error handler. Does python have a standard mechanism for
setting up fpu control words etc?
--
Robin Becker

[Robin Becker]

In article <ma**********************************@python.org >, Tim Peters
<ti*****@comcast.net> writes
.......

Python itself assumes that no-stop mode is in effect (the IEEE-754 mandated
default: all FPU traps are disabled).

.....
That at least makes resetting easy when one can do it.

I guessed all Python floating point ops are tested either pre or post
for the correct outcome, but then I tried

a=1e290
a 1.0000000000000001e+290 a*a1.#INF

so I suppose only the obvious things are tested.
-it's hard being an fpu'ly yrs-
Robin Becker