From: wkranec@...
Date: 2011-07-29T20:17:37+09:00
Subject: Argument error in ludcmp when using Newton module

Hi,

I am trying to use bigdecimal/newton for an implementation of XIRR.  A
copy of the code I am trying to run can be found here:
http://pastebin.com/VVMB4bRs

When I run the code (Ruby 1.9.2 on Mac OS X 10.6), I get the following error:

/opt/local/lib/ruby1.9/1.9.1/bigdecimal/ludcmp.rb:84:in `div': wrong
number of arguments(2 for 1) (ArgumentError)
	from /opt/local/lib/ruby1.9/1.9.1/bigdecimal/ludcmp.rb:84:in `block in lusolve'
	from /opt/local/lib/ruby1.9/1.9.1/bigdecimal/ludcmp.rb:78:in `downto'
	from /opt/local/lib/ruby1.9/1.9.1/bigdecimal/ludcmp.rb:78:in `lusolve'
	from /opt/local/lib/ruby1.9/1.9.1/bigdecimal/newton.rb:60:in `nlsolve'
	from gistfile1.rb:52:in `<main>'

Is this because of an error in my program, or something in the
BigDecimal library?

Any assistance in debugging this would be greatly appreciated.

Thanks,
Bill