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author | yugui <yugui@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2008-08-25 15:02:05 +0000 |
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committer | yugui <yugui@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2008-08-25 15:02:05 +0000 |
commit | 0dc342de848a642ecce8db697b8fecd83a63e117 (patch) | |
tree | 2b7ed4724aff1f86073e4740134bda9c4aac1a39 /trunk/sample/pi.rb | |
parent | ef70cf7138ab8034b5b806f466e4b484b24f0f88 (diff) |
added tag v1_9_0_4
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/tags/v1_9_0_4@18845 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'trunk/sample/pi.rb')
-rw-r--r-- | trunk/sample/pi.rb | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/trunk/sample/pi.rb b/trunk/sample/pi.rb new file mode 100644 index 0000000000..63be974285 --- /dev/null +++ b/trunk/sample/pi.rb @@ -0,0 +1,18 @@ +#!/usr/local/bin/ruby + +k, a, b, a1, b1 = 2, 4, 1, 12, 4 + +loop do + # Next approximation + p, q, k = k*k, 2*k+1, k+1 + a, b, a1, b1 = a1, b1, p*a+q*a1, p*b+q*b1 + # Print common digits + d = a / b + d1 = a1 / b1 + while d == d1 + print d + $stdout.flush + a, a1 = 10*(a%b), 10*(a1%b1) + d, d1 = a/b, a1/b1 + end +end |