From: Peter Stephenson <p.stephenson@samsung.com>
To: Emanuel Berg <embe8573@student.uu.se>, zsh-workers@zsh.org
Subject: Re: why do ceil/floor give the decimal dot?
Date: Thu, 14 May 2015 10:53:49 +0100 [thread overview]
Message-ID: <20150514105349.52338d94@pwslap01u.europe.root.pri> (raw)
In-Reply-To: <B6914C0C-15CA-4FE2-A21A-4320D4CD4927@larryv.me>
On Wed, 13 May 2015 23:53:53 -0400
Lawrence Velázquez <vq@larryv.me> wrote:
> - "ceil(log(30)/log(2))" returns floating-point "5."
... as noted, this is down to the C math library function returning
floating point. It has to do this because it doesn't know the result
fits in an integer --- ceil(5e30) is a perfectly valid calculation. See
the manual page.
So if you're happy it does fit, just convert to integer yourself.
pws
next prev parent reply other threads:[~2015-05-14 9:53 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-14 0:32 Emanuel Berg
2015-05-14 2:56 ` Bart Schaefer
2015-05-14 3:29 ` Emanuel Berg
2015-05-14 3:53 ` Lawrence Velázquez
2015-05-14 9:53 ` Peter Stephenson [this message]
2015-05-14 21:38 ` Emanuel Berg
2015-05-14 22:14 ` Lawrence Velázquez
2015-05-14 23:29 ` Emanuel Berg
2015-05-15 0:46 ` Oliver Kiddle
2015-05-15 1:07 ` Emanuel Berg
2015-05-15 1:27 ` Bart Schaefer
2015-05-18 8:16 ` Vincent Lefevre
2015-05-14 4:04 ` Bart Schaefer
2015-05-14 9:12 ` Emanuel Berg
2015-05-14 17:54 ` Bart Schaefer
2015-05-18 8:39 ` Vincent Lefevre
2015-05-18 9:41 ` Mikael Magnusson
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