Boris Gubenko wrote:
As Markus pointed out, it is not the processor itself: one needs to compile -ieee in order to get full support of ANSI/IEEE Standard 754-1985.
For your library, compiling with cxx on Tru64 without -ieee makes little sense. Likewise, on AlphaVMS, it should be compiled /float=ieee/ieee=denorm. On iVMS, i.e. VMS on ia64, the full support for IEEE features is on by default.
It should still be meaningful to use the library without -ieee. If there are no infinities and no NaNs, then the functions isinf and isnan should always return false.
Where can I download your library and the inspect tool from? I'd like to try it on AlphaVMS and iVMS.
Great! It is in the Boost Vault, http://boost-consulting.com/vault/, in the folder Math-Numerics. The file is called fpclassify.zip. Try both with and without /float=ieee/ieee=denorm, and let me know the results. --Johan