From 128aab9252305f83f914950b2c6d2904b47725e6 Mon Sep 17 00:00:00 2001
From: aozhiwei <aozhiwe@kingsome.cn>
Date: Mon, 18 Mar 2019 17:35:23 +0800
Subject: [PATCH] add Clamp function

---
 a8/sysutils.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/a8/sysutils.h b/a8/sysutils.h
index 0e04df2..23f98d0 100644
--- a/a8/sysutils.h
+++ b/a8/sysutils.h
@@ -42,6 +42,12 @@ namespace a8
         return t.back();
     }
 
+    template <typename T>
+    const T& Clamp(const T& v, const T& lo, const T& hi)
+    {
+        return v < hi ? (v > lo ? v : lo) : hi;
+    }
+
     template <typename T>
     void SetToVector(std::set<T>& set_v, std::vector<T>& vector_v)
     {