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From: Jens Gustedt <jens.gustedt@inria.fr>
To: musl@lists.openwall.com
Subject: Re: Thinking about release
Date: Wed, 10 Jul 2013 08:42:58 +0200	[thread overview]
Message-ID: <1373438578.12826.167.camel@eris.loria.fr> (raw)
In-Reply-To: <CAPfzE3ZsMpC9d4VDZyHabhKOffOQW0dnG7Nwpm8EqVBLUXNZKg@mail.gmail.com>

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Am Mittwoch, den 10.07.2013, 10:26 +1200 schrieb Andre Renaud:
> typedef struct multiple_size_t {
>     size_t d[4];
> } multiple_size_t;

why not have it

typedef size_t _multiple_size[4];

the wrapping into struct just doesn't serve much purpose, I think.

Then for your implementation, the commonly used trick would be to have
two "slow" phases for misalignment. One at the start for the first
bytes up to the next valid alignment boundary, do the "fast" copy for
the aligned part, and then handle the last bytes in another slow
phase. For small things to copy this adds a bit of arithmetic and a
conditional.

Jens

-- 
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  reply	other threads:[~2013-07-10  6:42 UTC|newest]

Thread overview: 38+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-06-13  1:25 Rich Felker
2013-06-13  1:33 ` Andre Renaud
2013-06-13  1:43   ` Rich Felker
2013-07-09  5:06     ` Andre Renaud
2013-07-09  5:37       ` Rich Felker
2013-07-09  6:24         ` Harald Becker
2013-07-09 21:28         ` Andre Renaud
2013-07-09 22:26           ` Andre Renaud
2013-07-10  6:42             ` Jens Gustedt [this message]
2013-07-10  7:50               ` Rich Felker
2013-07-10 22:44             ` Andre Renaud
2013-07-11  3:37               ` Rich Felker
2013-07-11  4:04                 ` Andre Renaud
2013-07-11  5:10                   ` Andre Renaud
2013-07-11 12:46                     ` Rich Felker
2013-07-11 22:34                       ` Andre Renaud
2013-07-12  3:16                         ` Rich Felker
2013-07-12  3:36                           ` Andre Renaud
2013-07-12  4:16                             ` Rich Felker
2013-07-24  1:34                               ` Andre Renaud
2013-07-24  3:48                                 ` Rich Felker
2013-07-24  4:40                                   ` Andre Renaud
2013-07-28  8:09                                     ` Rich Felker
2013-07-11  5:27                 ` Daniel Cegiełka
2013-07-11 12:49                   ` Rich Felker
2013-07-15  4:25                 ` Rob Landley
2013-07-10 19:42           ` Rich Felker
2013-07-14  6:37             ` Rob Landley
2013-07-11  4:30           ` Strake
2013-07-11  4:33             ` Rich Felker
2013-07-10 19:38         ` Rob Landley
2013-07-10 20:34           ` Andre Renaud
2013-07-10 20:49             ` Nathan McSween
2013-07-10 21:01             ` Rich Felker
2013-06-13 15:46 ` Isaac
2013-06-26  1:44 ` Rich Felker
2013-06-26 10:19   ` Szabolcs Nagy
2013-06-26 14:21     ` Rich Felker

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