From: erik quanstrom <quanstro@quanstro.net>
To: 9fans@cse.psu.edu
Subject: Re: [9fans] fun and scary evil C code
Date: Wed, 19 Dec 2007 19:51:38 -0500 [thread overview]
Message-ID: <45359f79d760ffae8f9d6d769e8087c2@quanstro.net> (raw)
In-Reply-To: <3FA5A9CA-EE09-4FDB-A9AA-118E3E8A3AB6@mac.com>
> I lied.
> They're actually using that stuff to pick apart the (presumed IEEE 754)
> doubles into exponent, mantissa, ...
>
> My questions still stand ...
>
> Also, that file is such a tangled nest of ifdefs ...
> is anyone sure whether (and if so, when) that code is invoked?
interesting conflicts on the web. http://en.wikipedia.org/wiki/IEEE_754
says c doesn't require ieee, http://home.datacomm.ch/t_wolf/tw/c/c9x_changes.html point #21.
says it does.
in any event, if ieee is used, i think the trick is safe.
- erik
next prev parent reply other threads:[~2007-12-20 0:51 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-12-19 15:15 David Leimbach
2007-12-19 20:37 ` Russ Cox
2007-12-19 22:32 ` Robert William Fuller
2007-12-19 22:38 ` erik quanstrom
2007-12-19 22:51 ` Bakul Shah
2007-12-20 0:18 ` dave.l
2007-12-20 0:33 ` dave.l
2007-12-20 0:51 ` erik quanstrom [this message]
2007-12-20 9:29 ` roger peppe
2007-12-20 13:02 ` erik quanstrom
2007-12-20 16:29 Russ Cox
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