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Date:      Wed, 9 May 2007 20:08:39 +1000 (EST)
From:      Bruce Evans <bde@zeta.org.au>
To:        Andrey Chernov <ache@FreeBSD.org>
Cc:        Daniel Eischen <deischen@FreeBSD.org>, arch@FreeBSD.org, "Sean C. Farley" <sean-freebsd@farley.org>
Subject:   Re: HEADS DOWN
Message-ID:  <20070509200000.B56490@besplex.bde.org>
In-Reply-To: <20070508222521.GA59534@nagual.pp.ru>
References:  <20070502230413.Y30614@thor.farley.org> <20070503160351.GA15008@nagual.pp.ru> <20070504085905.J39482@thor.farley.org> <20070504213312.GA33163@nagual.pp.ru> <20070504174657.D1343@thor.farley.org> <20070505213202.GA49925@nagual.pp.ru> <20070505163707.J6670@thor.farley.org> <20070505221125.GA50439@nagual.pp.ru> <20070506091835.A43775@besplex.bde.org> <20070508162458.G6015@baba.farley.org> <20070508222521.GA59534@nagual.pp.ru>

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On Wed, 9 May 2007, Andrey Chernov wrote:

> On Tue, May 08, 2007 at 04:37:03PM -0500, Sean C. Farley wrote:
>>  Would it be preferred to go ahead to use strlen() in preparation for a
>>  faster strlen() in the future?
> ...
> we can use strlen() in preparation for the future.

Yes, it is better to use library functions if they do (almost) exactly what
is wanted.

>>  I would still use the inline'd version
>>  when counting characters while watching for an '=' character.  Or should
>>  it also be changed to perform a strlen() and then a strchr()?
>
> Combined strlen()+strchr() will be slower in any case than single loop, so
> better leave it as is.

The compiler could in theory reduce to a single loop, but I've never seen
one that does and would use the loop myself.

Bruce



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