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Boost Users : |
Subject: Re: [Boost-users] boost.container.vector::operator==() bug?
From: niXman (i.nixman_at_[hidden])
Date: 2014-11-10 03:04:14
Ion Gaztañaga 2014-11-10 10:52:
> As said, listdc++ uses memcmp. MSVC uses it only for chars, libc++ does
> not
> use memcmp. So Boost.Container will need to implement its own
> optimization
> based on libcstd++ ideas: pointers and integers (asumming no padding or
> trap representation) can be memcmp-ed on all platforms Boost runs.
> PODs,
> due to float signed zero and Nan, can't be memcmp-ed.
>
> A similar optimization could be done for lexicographical_compare, but
> only
> for unsigned chars. Unsigned integers might work in Big Endian
> machines. In
> any case, I consider this a very specific optimization that chould not
> be
> crucial.
Ok, in what namespaces/file should I implement it?
-- Regards, niXman ___________________________________________________ Dual-target(32 & 64-bit) MinGW-W64 compilers for 32 and 64-bit Windows: http://sourceforge.net/projects/mingw-w64/ ___________________________________________________ Another online IDE: http://liveworkspace.org/
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