Dir. rearrangement according to the suggestions from Minero Aoki.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@3722 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ext/bigdecimal/MANIFEST

@@ -7,10 +7,10 @@ depend
 extconf.rb
 bigdecimal_en.html
 bigdecimal_ja.html
-lib/nlsolve.rb
 lib/jacobian.rb
 lib/newton.rb
-lib/linear.rb
 lib/ludcmp.rb
-lib/pai.rb
 lib/bigdecimal-rational.rb
+sample/linear.rb
+sample/nlsolve.rb
+sample/pi.rb

ext/bigdecimal/sample/pi.rb

@@ -1,14 +1,15 @@
 #!/usr/local/bin/ruby
 
 #
-# pai.rb
+# pi.rb
 #
 
 require "bigdecimal"
 #
-# Calculates 3.1415.... using J. Machin's formula.
+# Calculates 3.1415.... (the number of times that a circle's diameter
+# will fit around the circle) using J. Machin's formula.
 #
-def pai(sig) # sig: Number of significant figures
+def big_pi(sig) # sig: Number of significant figures
   exp    = -sig
   pi     = BigDecimal::new("0")
   two    = BigDecimal::new("2")
@@ -41,9 +42,9 @@ end
 
 if $0 == __FILE__
   if ARGV.size == 1
-    print "PAI("+ARGV[0]+"):\n"
-    p pai(ARGV[0].to_i)
+    print "PI("+ARGV[0]+"):\n"
+    p big_pi(ARGV[0].to_i)
   else
-    print "TRY: ruby pai.rb 1000 \n"
+    print "TRY: ruby pi.rb 1000 \n"
   end
 end