Warnings with GMP.H
user42 at zip.com.au
Sat May 15 01:59:40 CEST 2004
"delta trinity" <deltatrinity at hotmail.com> writes:
> Hello, I don't know if I should forward this to gmp-bugs...
Yes. (The headers are supposed to be clean to sensible application
> - Condition is always true (line 1595)
> - Negating unsigned value (line 1596)
You have to say what compiler, what version, and what options.
> - Doing the if at compile time, i.e. #if (since the expression reffer
> to constants set at GMP-build time)
Yes some sort of preprocessor trickery would be possible (whether a
limb is a long or longlong, and how many nail bits).
> - Doing a bitwise 'not' or doing a conditional expresion, i.e.
> return (__gmp_n != 0)?__gmp_l :0;
Actually I've changed to just that in the development code because I
thought it clearer than the mask and better for optimization (more
obvious cmov or predicate), though in fact gcc spits out the same for
both when I tried it.
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