Re: [ANN] Lua 5.3.0 (work2) now available
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- Subject: Re: [ANN] Lua 5.3.0 (work2) now available
- From: Roberto Ierusalimschy <roberto@...>
- Date: 2014年3月26日 13:41:05 -0300
> Let’s be clear, arithmetic shift is a useful tool as a low-level
> operation for more than just shorthand division — this is the
> reason it exists as a basic operation in every mainstream CPU
> architecture. I’ve used it over the years for the signum function
> (where is works very well indeed) optimized bit-counting etc etc. It
> should be noted that almost all these uses are where performance is
> hyper-critical.
Just for curiosity, do you remember those techniques?
-- Roberto
- References:
- [ANN] Lua 5.3.0 (work2) now available, Luiz Henrique de Figueiredo
- Re: [ANN] Lua 5.3.0 (work2) now available, Paul Baker
- Re: [ANN] Lua 5.3.0 (work2) now available, Roberto Ierusalimschy
- Re: [ANN] Lua 5.3.0 (work2) now available, Coda Highland
- Re: [ANN] Lua 5.3.0 (work2) now available, Dirk Laurie
- Re: [ANN] Lua 5.3.0 (work2) now available, Coda Highland
- Re: [ANN] Lua 5.3.0 (work2) now available, Roberto Ierusalimschy
- Re: [ANN] Lua 5.3.0 (work2) now available, Tim Hill
- Re: [ANN] Lua 5.3.0 (work2) now available, Enrico Colombini
- Re: [ANN] Lua 5.3.0 (work2) now available, Tim Hill