From: gotoken@... (GOTO Kentaro)
Date: 2001-03-10T02:22:17+09:00
Subject: [ruby-talk:12339] Re: Math package

In message "[ruby-talk:12329] Math package"
    on 01/03/10, Mathieu Bouchard <matju@sympatico.ca> writes:

>why is it Math.sin(42.0) and not (42.0).sin ?

Though Math::sin is not bad, I would like Numeric#<function> as
dispatch often (too).  

Matz, how about this specification for the built-in functions taking
just one parameter:

  module Math
    alias __sin__ sin

    def sin(obj)
      if obj.is_a? Numeric
        __sin__(obj)
      else
        obj.sin
      end
    end
  end

This allows us to write as Math::sin(numarray). 

By the way, I think Math function should be also defined in Math::Libm. 

-- Gotoken