From 3d7cc76c1e911efcc5131dee5b5409bc3beb80d3 Mon Sep 17 00:00:00 2001
From: Wang Renxin <hellotony521@qq.com>
Date: Thu, 14 Jul 2016 10:15:00 +0800
Subject: [PATCH] *updated history.

---
 HISTORY | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/HISTORY b/HISTORY
index 7a601f6..bfdc348 100755
--- a/HISTORY
+++ b/HISTORY
@@ -1,3 +1,7 @@
+Jul. 14 2016
+Fixed a boolean operation bug with the NOT statement on float number
+Improved boolean operation
+
 Jul. 13 2016
 Refactored error prompting