where to discuss problems with IEEE 754 standard on x86 architecture?

[Nick Maclaren]

I was being stupid.  Sorry.  My reply was correct but unhelpful.

You were using -mfpmath=387 (possible as the default), and that uses
Intel native arithmetic, which is NOT standard IEEE 754 double, but
an extended format.

If you use -mfpmath=sse, you will get what you expect.


Regards,
Nick Maclaren,
University of Cambridge Computing Service,
New Museums Site, Pembroke Street, Cambridge CB2 3QH, England.
Email:  nmm1@cam.ac.uk
Tel.:  +44 1223 334761    Fax:  +44 1223 334679