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-rw-r--r--ruby_2_2/ext/bigdecimal/sample/nlsolve.rb39
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diff --git a/ruby_2_2/ext/bigdecimal/sample/nlsolve.rb b/ruby_2_2/ext/bigdecimal/sample/nlsolve.rb
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--- a/ruby_2_2/ext/bigdecimal/sample/nlsolve.rb
+++ /dev/null
@@ -1,39 +0,0 @@
-#!/usr/local/bin/ruby
-
-#
-# nlsolve.rb
-# An example for solving nonlinear algebraic equation system.
-#
-
-require "bigdecimal"
-require "bigdecimal/newton"
-include Newton
-
-class Function # :nodoc: all
- def initialize()
- @zero = BigDecimal.new("0.0")
- @one = BigDecimal.new("1.0")
- @two = BigDecimal.new("2.0")
- @ten = BigDecimal.new("10.0")
- @eps = BigDecimal.new("1.0e-16")
- end
- def zero;@zero;end
- def one ;@one ;end
- def two ;@two ;end
- def ten ;@ten ;end
- def eps ;@eps ;end
- def values(x) # <= defines functions solved
- f = []
- f1 = x[0]*x[0] + x[1]*x[1] - @two # f1 = x**2 + y**2 - 2 => 0
- f2 = x[0] - x[1] # f2 = x - y => 0
- f <<= f1
- f <<= f2
- f
- end
-end
-
-f = BigDecimal.limit(100)
-f = Function.new
-x = [f.zero,f.zero] # Initial values
-n = nlsolve(f,x)
-p x