From fcbf63e62c627deae76c1b8cb8c0876c536ed811 Mon Sep 17 00:00:00 2001
From: Jari Vetoniemi <jari.vetoniemi@indooratlas.com>
Date: Mon, 16 Mar 2020 18:49:26 +0900
Subject: Fresh start

---
 jni/ruby/benchmark/bm_so_sieve.rb | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 jni/ruby/benchmark/bm_so_sieve.rb

(limited to 'jni/ruby/benchmark/bm_so_sieve.rb')

diff --git a/jni/ruby/benchmark/bm_so_sieve.rb b/jni/ruby/benchmark/bm_so_sieve.rb
new file mode 100644
index 0000000..43dc302
--- /dev/null
+++ b/jni/ruby/benchmark/bm_so_sieve.rb
@@ -0,0 +1,24 @@
+# from http://www.bagley.org/~doug/shootout/bench/sieve/sieve.ruby
+num = 500
+count = i = j = 0
+flags0 = Array.new(8192,1)
+k = 0
+while k < num
+  k += 1
+  count = 0
+  flags = flags0.dup
+  i = 2
+  while i<8192
+    i += 1
+    if flags[i]
+      # remove all multiples of prime: i
+      j = i*i
+      while j < 8192
+        j += i
+        flags[j] = nil
+      end
+      count += 1
+    end
+  end
+end
+count
-- 
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