diff options
Diffstat (limited to 'ruby_1_8_6/sample/pi.rb')
-rw-r--r-- | ruby_1_8_6/sample/pi.rb | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/ruby_1_8_6/sample/pi.rb b/ruby_1_8_6/sample/pi.rb new file mode 100644 index 0000000000..63be974285 --- /dev/null +++ b/ruby_1_8_6/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 |