Forum: Ruby-core [Bug #1712] Complex#% Raises NoMethodError for #floor

Bug #1712: Complex#% Raises NoMethodError for #floor
http://redmine.ruby-lang.org/issues/show/1712

Author: Run Paint Run Run
Status: Open, Priority: Normal
Category: core
ruby -v: ruby 1.9.2dev (2009-07-01 trunk 23924) [i686-linux]

1.8's Complex had a modulus operator (%); 1.9's doesn't, and attempts to 
use it raise a NoMethodError for #floor because it falls back to 
Numeric#% which needs #floor. Is this omission intentional? If so, could 
an appropriate NoMethodError be raised instead? If not, I'd appreciate 
knowing so I can write the specifications.

    >> Complex(13, 44) % Complex(5, 20)
    NoMethodError: undefined method `floor' for 
((189/85)-(8/85)*i):Complex
  from (irb):3:in `div'
  from (irb):3:in `%'
  from (irb):3
  from /usr/local/bin/irb:12:in `<main>'

Hi,

In message "Re: [ruby-core:24110] [Bug #1712] Complex#% Raises 
NoMethodError for #floor"
    on Thu, 2 Jul 2009 07:06:32 +0900, Run Paint Run Run 
<redmine@ruby-lang.org> writes:

|1.8's Complex had a modulus operator (%); 1.9's doesn't, and attempts to use it raise a NoMethodError for #floor because it falls back to Numeric#% which needs #floor. Is this omission intentional? If so, could an appropriate NoMethodError be raised instead? If not, I'd appreciate knowing so I can write the specifications.

I don't think there's natural definition of modulo on complex numbers,
so that we should undefine % method.  We might need to do something
for compatibility's sake.  Opinion?

              matz.

Issue #1712 has been updated by tadayoshi funaba.

Status changed from Open to Closed
% Done changed from 0 to 100

Applied in changeset r23946.
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http://redmine.ruby-lang.org/issues/show/1712