From 75feee0968c9345e7ffd2bda9835fcd60b4c0880 Mon Sep 17 00:00:00 2001 From: nobu Date: Fri, 16 Nov 2007 01:30:29 +0000 Subject: * set eol-style. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@13944 b2dd03c8-39d4-4d8f-98ff-823fe69b080e --- benchmark/bm_so_binary_trees.rb | 114 ++++++++++++++++++++-------------------- 1 file changed, 57 insertions(+), 57 deletions(-) (limited to 'benchmark/bm_so_binary_trees.rb') diff --git a/benchmark/bm_so_binary_trees.rb b/benchmark/bm_so_binary_trees.rb index 138c5290f5..6a26465578 100644 --- a/benchmark/bm_so_binary_trees.rb +++ b/benchmark/bm_so_binary_trees.rb @@ -1,57 +1,57 @@ -# The Computer Language Shootout Benchmarks -# http://shootout.alioth.debian.org -# -# contributed by Jesse Millikan - -# disable output -def STDOUT.write_ *args -end - -def item_check(tree) - if tree[0] == nil - tree[1] - else - tree[1] + item_check(tree[0]) - item_check(tree[2]) - end -end - -def bottom_up_tree(item, depth) - if depth > 0 - item_item = 2 * item - depth -= 1 - [bottom_up_tree(item_item - 1, depth), item, bottom_up_tree(item_item, depth)] - else - [nil, item, nil] - end -end - -max_depth = 12 # 16 # ARGV[0].to_i -min_depth = 4 - -max_depth = min_depth + 2 if min_depth + 2 > max_depth - -stretch_depth = max_depth + 1 -stretch_tree = bottom_up_tree(0, stretch_depth) - -puts "stretch tree of depth #{stretch_depth}\t check: #{item_check(stretch_tree)}" -stretch_tree = nil - -long_lived_tree = bottom_up_tree(0, max_depth) - -min_depth.step(max_depth + 1, 2) do |depth| - iterations = 2**(max_depth - depth + min_depth) - - check = 0 - - for i in 1..iterations - temp_tree = bottom_up_tree(i, depth) - check += item_check(temp_tree) - - temp_tree = bottom_up_tree(-i, depth) - check += item_check(temp_tree) - end - - puts "#{iterations * 2}\t trees of depth #{depth}\t check: #{check}" -end - -puts "long lived tree of depth #{max_depth}\t check: #{item_check(long_lived_tree)}" +# The Computer Language Shootout Benchmarks +# http://shootout.alioth.debian.org +# +# contributed by Jesse Millikan + +# disable output +def STDOUT.write_ *args +end + +def item_check(tree) + if tree[0] == nil + tree[1] + else + tree[1] + item_check(tree[0]) - item_check(tree[2]) + end +end + +def bottom_up_tree(item, depth) + if depth > 0 + item_item = 2 * item + depth -= 1 + [bottom_up_tree(item_item - 1, depth), item, bottom_up_tree(item_item, depth)] + else + [nil, item, nil] + end +end + +max_depth = 12 # 16 # ARGV[0].to_i +min_depth = 4 + +max_depth = min_depth + 2 if min_depth + 2 > max_depth + +stretch_depth = max_depth + 1 +stretch_tree = bottom_up_tree(0, stretch_depth) + +puts "stretch tree of depth #{stretch_depth}\t check: #{item_check(stretch_tree)}" +stretch_tree = nil + +long_lived_tree = bottom_up_tree(0, max_depth) + +min_depth.step(max_depth + 1, 2) do |depth| + iterations = 2**(max_depth - depth + min_depth) + + check = 0 + + for i in 1..iterations + temp_tree = bottom_up_tree(i, depth) + check += item_check(temp_tree) + + temp_tree = bottom_up_tree(-i, depth) + check += item_check(temp_tree) + end + + puts "#{iterations * 2}\t trees of depth #{depth}\t check: #{check}" +end + +puts "long lived tree of depth #{max_depth}\t check: #{item_check(long_lived_tree)}" -- cgit v1.2.3