Date: Fri, 19 Jan 2007 20:32:29 +1100 From: Peter Jeremy <peterjeremy@optushome.com.au> To: Warner Losh <imp@freebsd.org> Cc: cvs-src@freebsd.org, src-committers@freebsd.org, cvs-all@freebsd.org Subject: Re: cvs commit: src/lib/libc/stdtime localtime.c Message-ID: <20070119093229.GB860@turion.vk2pj.dyndns.org> In-Reply-To: <200701190116.l0J1GZcD021864@repoman.freebsd.org> References: <200701190116.l0J1GZcD021864@repoman.freebsd.org>
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On Fri, 2007-Jan-19 01:16:35 +0000, Warner Losh wrote:
>imp 2007-01-19 01:16:35 UTC
>
> FreeBSD src repository
>
> Modified files:
> lib/libc/stdtime localtime.c=20
> Log:
> On FreeBSD/arm, any value > 50 bits will result in a rediculously huge
> number being returned for mktime and timegm calls.
Actually, I have some code that can convert a UTC struct tm into a
time_t without any loops[1]. Converting localtime would need a couple
of probes to handle DST. This should be far more efficient than a
binary search. Is there any interest in this?
[1] The date to day number core started as a FORTRAN one-liner but I
can't find the source. I've written C and perl versions and
exhaustively tested them.
--=20
Peter Jeremy
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