From: matz@... (Yukihiro Matsumoto)
Date: 2000-07-04T11:44:25+09:00
Subject: [ruby-talk:03787] Re: modulo and remainder

Hi,

In message "[ruby-talk:03779] Re: modulo and remainder"
    on 00/07/04, Tadayoshi Funaba <tadf@kt.rim.or.jp> writes:

|I wrote a method jd_to_wday in date2.rb like this:
|
|    def jd_to_wday(jd) (jd + 1) % 7 end
|
|It calculates the day of week of the given the Julian day number.
|I used % and it must be modulo.  So it works even if jd is -ve.

Hmm.

|BTW, I wish divmod to behave like floor in Common Lisp or Python's.
|And we may use floor, ceil and round in all numerical domain, I think.
|(Integer#floor just returns self) Ruby has some restrictions in math,
|I think.  I don't need that.

It reflects the author's weakpoint.  Even if you don't need that
(weakness in mathematical field?), I can't do the right thing without
YOUR help.  Enlighten me, please.

							matz.