From: Dave Thomas <Dave@...>
Date: 2001-05-08T08:21:08+09:00
Subject: [ruby-talk:14829] Re: Integer division oddness

"Benjamin J. Tilly" <ben_tilly@operamail.com> writes:

> >Is that it? But this doesn't hold if d is negative: 10 % -9 = -8
> >Argh!  Maybe I still don't quite get it.
> >
> You have it right, and I would call that answer a bug in Ruby.

I'm no expert on this, and writing those couple of pages for class
Numeric took way longer than it should. If it makes a difference,
though, Ruby gives you both #modulo and #remainder. These are
distinguished by the sign they take: modulo takes the sign of the
divisor, while remainder has the sign of the dividend.

If you dig back in the archives a year or so you'll find a thread
about this very subject (which is what convinced Matz to change the
1.6.1 behavior).

Dave