From: Tristan Plumb <9p-st@imu.li>
To: 9fans@9fans.net
Subject: Re: [9fans] NaN, +Inf, and -Inf, constants?
Date: Sat, 6 Feb 2010 12:14:53 -0500 [thread overview]
Message-ID: <2576c2.2c8ec300.jiSO.mx@tumtum.plumbweb.net> (raw)
In-Reply-To: <fff3a08cba89f090f954ec39fb01f078@ladd.quanstro.net>
> NaN(2) and Inf(2) are not constant functions. the result depends on
> the settings of the fcr (getfcr(2)).
Really? My reading of /sys/src/libc/port/nan.c makes me think NaN(2)
returns a uvlong value of 0x7ff0000000000001, miss I something?
On the other hand, the assignment of NaN to a double depends on the fcr.
(And on my machine, curiously changes 0x7ff0...1 to 0x7ff8...1).
So if I think of enum definitions as assignment, it makes sense, mostly.
thanks,
tristan
--
All original matter is hereby placed immediately under the public domain.
next prev parent reply other threads:[~2010-02-06 17:14 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-02-06 15:38 Tristan Plumb
2010-02-06 15:57 ` erik quanstrom
2010-02-06 17:14 ` Tristan Plumb [this message]
2010-02-07 16:12 ` erik quanstrom
2010-02-07 0:06 ` Russ Cox
2010-02-07 10:46 ` Charles Forsyth
2010-02-07 11:05 ` Charles Forsyth
2010-02-07 20:01 ` Russ Cox
2010-02-07 20:31 ` erik quanstrom
2010-02-07 21:33 ` Charles Forsyth
2010-02-07 22:19 ` Lyndon Nerenberg (VE6BBM/VE7TFX)
2010-02-07 22:37 ` erik quanstrom
2010-02-08 16:39 ` Lyndon Nerenberg (VE6BBM/VE7TFX)
2010-02-08 18:48 ` Russ Cox
2010-02-07 23:16 ` Bakul Shah
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