Added benchmark test.

Added a benchmark test to check future implementations of the algorithm

Author: gianu

script/benchmark

@@ -0,0 +1,6 @@
+#!/bin/sh
+
+set -e
+set -u
+
+ruby -Ilib/ spec/performance_hex_values_test.rb

spec/performance_hex_values_test.rb

@@ -0,0 +1,32 @@
+require 'minitest/autorun'
+require 'minitest/benchmark'
+
+require 'hex_values'
+
+# This test is only useful to compare differents implementations of
+#  the algorithm used to transformt floats to hex and vicecersa.
+class BenchHexValues < MiniTest::Unit::TestCase
+  def bench_float_to_hex
+    assert_performance_linear 0.9999 do |n|
+      n.times do
+        (98789879890.87).to_hex #O(1)
+      end
+    end
+  end
+
+  def bench_integer_to_hex
+    assert_performance_linear 0.999 do |n|
+      n.times do
+        9878987608.to_hex #O(1)
+      end
+    end
+  end
+
+  def bench_hex_to_float
+    assert_performance_linear 0.9999 do |n|
+      n.times do
+        "5f2f9e39.42".to_float #O(1)
+      end
+    end
+  end
+end