From b6ecee0d7d8ad353fae54c68c74e73d2ea36f22e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Branimir=20Karad=C5=BEi=C4=87?= <branimirkaradzic@gmail.com>
Date: Sat, 27 May 2017 18:33:52 -0700
Subject: [PATCH] Fixed isPrint.

---
 src/debug.cpp  |  2 +-
 src/string.cpp | 13 +++++++++----
 2 files changed, 10 insertions(+), 5 deletions(-)

diff --git a/src/debug.cpp b/src/debug.cpp
index 5e52be8..d0720b1 100644
--- a/src/debug.cpp
+++ b/src/debug.cpp
@@ -125,7 +125,7 @@ namespace bx
 					ascii[asciiPos] = '\0';
 					debugPrintf("\t" DBG_ADDRESS "\t" HEX_DUMP_FORMAT "\t%s\n", data, hex, ascii);
 					data += asciiPos;
-					hexPos = 0;
+					hexPos   = 0;
 					asciiPos = 0;
 				}
 			}
diff --git a/src/string.cpp b/src/string.cpp
index 24d0ca5..1568a7b 100644
--- a/src/string.cpp
+++ b/src/string.cpp
@@ -25,14 +25,19 @@ namespace bx
 			;
 	}
 
+	inline bool isInRange(char _ch, char _from, char _to)
+	{
+		return unsigned(_ch - _from) < unsigned(_to-_from);
+	}
+
 	bool isUpper(char _ch)
 	{
-		return _ch >= 'A' && _ch <= 'Z';
+		return isInRange(_ch, 'A', 'Z');
 	}
 
 	bool isLower(char _ch)
 	{
-		return _ch >= 'a' && _ch <= 'z';
+		return isInRange(_ch, 'a', 'z');
 	}
 
 	bool isAlpha(char _ch)
@@ -42,7 +47,7 @@ namespace bx
 
 	bool isNumeric(char _ch)
 	{
-		return _ch >= '0' && _ch <= '9';
+		return isInRange(_ch, '0', '9');
 	}
 
 	bool isAlphaNum(char _ch)
@@ -52,7 +57,7 @@ namespace bx
 
 	bool isPrint(char _ch)
 	{
-		return isAlphaNum(_ch) || isSpace(_ch);
+		return isInRange(_ch, ' ', '~');
 	}
 
 	char toLower(char _ch)