My mem_n_cpy() in Assembly

[matsp]

Another thing the compiler is probably better at.

Agreed. Although all my attempts to write memcpy() type functions, I have beaten the compiler - but usually because I know better what I'm doing than C allows me to tell the compiler about what I'm doing [and I spent quite some time on it, of course].

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Mats

[CornedBee]

functions, I have beaten the compiler

Out of curiosity, which compiler? I've heard recently that GCC is supposed to be bad at memcpy prior to 4.3.

[matsp]

Out of curiosity, which compiler? I've heard recently that GCC is supposed to be bad at memcpy prior to 4.3.

Several compilers, gcc, Visual Studio/earlier MS compilers, embedded compilers, etc. [I also worked on the memcpy() for glibc on x86_64, although I think my improvements never made it into the official release for some reason - I'd have to ask AJ for the reasons, if he remembers that far back].

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Mats