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Date: Tue, 13 Jan 2015 10:10:16 +0000
From: Peter Stephenson <p.stephenson@samsung.com>
To: zsh-workers@zsh.org
Subject: Re: Floating point modulus - the "why not"
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On Mon, 12 Jan 2015 21:38:52 -0800
Bart Schaefer <schaefer@brasslantern.com> wrote:
> I think we did the right thing, but just as a counter-point:
> 
> torch% print $(( 91 % 13 ))                 
> 0
> torch% print $(( 9.1 % 1.3 ))    
> 1.2999999999999994

That's the same problem with floating point division as everywhere else;
if you need to round it, you need to decide what you're rounding to and
add half of that before you truncate downwards.  I don't think that's a
fundamentally new effect in this one case.

pws