diff --git a/cocos2dx/actions/CCAction.cpp b/cocos2dx/actions/CCAction.cpp
index 01310419e4..489279cb5e 100644
--- a/cocos2dx/actions/CCAction.cpp
+++ b/cocos2dx/actions/CCAction.cpp
@@ -55,7 +55,7 @@ CCAction * CCAction::action()
 char * CCAction::description()
 {
 	char *ret = new char[100] ;
-	sprintf_s(ret, 100, "<CCAction | Tag = %d>", m_nTag);
+	sprintf(ret,"<CCAction | Tag = %d>", m_nTag);
 	return ret;
 }
 NSObject* CCAction::copyWithZone(NSZone *pZone)
diff --git a/cocos2dx/actions/CCCameraAction.cpp b/cocos2dx/actions/CCCameraAction.cpp
index 97c61836d1..2c40dbd777 100644
--- a/cocos2dx/actions/CCCameraAction.cpp
+++ b/cocos2dx/actions/CCCameraAction.cpp
@@ -21,10 +21,11 @@ LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 THE SOFTWARE.
 ****************************************************************************/
-#include <cfloat>
 #include "CCCameraAction.h"
 #include "CCNode.h"
 #include "CCCamera.h"
+#include "platform/CCXMath.h"
+
 namespace cocos2d{
 	//
 	// CameraAction
@@ -97,11 +98,11 @@ namespace cocos2d{
 		CCIntervalAction::startWithTarget(pTarget);
 		float r, zenith, azimuth;
 		this->sphericalRadius(&r, &zenith, &azimuth);
-		if( _isnan(m_fRadius) )
+		if( CCXMath::isnanCocos2d(m_fRadius) )
 			m_fRadius = r;
-		if( _isnan(m_fAngleZ) )
+		if( CCXMath::isnanCocos2d(m_fAngleZ) )
 			m_fAngleZ = (CGFloat)CC_RADIANS_TO_DEGREES(zenith);
-		if( _isnan(m_fAngleX) )
+		if( CCXMath::isnanCocos2d(m_fAngleX) )
 			m_fAngleX = (CGFloat)CC_RADIANS_TO_DEGREES(azimuth);
 
 		m_fRadZ = (CGFloat)CC_DEGREES_TO_RADIANS(m_fAngleZ);
diff --git a/cocos2dx/actions/CCIntervalAction.cpp b/cocos2dx/actions/CCIntervalAction.cpp
index cf6fa6adf2..d3475b9616 100644
--- a/cocos2dx/actions/CCIntervalAction.cpp
+++ b/cocos2dx/actions/CCIntervalAction.cpp
@@ -26,8 +26,8 @@ THE SOFTWARE.
 #include "CCSprite.h"
 #include "CCNode.h"
 #include "CGPointExtension.h"
+#include "platform/CCXMath.h"
 
-#include <float.h>
 #include <stdarg.h>
 
 namespace cocos2d {
@@ -542,7 +542,7 @@ bool CCSpawn:: initOneTwo(CCFiniteTimeAction *pAction1, CCFiniteTimeAction *pAct
 	ccTime d2 = pAction2->getDuration();
 
 	// __super::initWithDuration(fmaxf(d1, d2));
-	float maxd = (d1 >= d2 || _isnan(d2)) ? d1 : d2;
+	float maxd = (d1 >= d2 || CCXMath::isnanCocos2d(d2)) ? d1 : d2;
 	CCIntervalAction::initWithDuration(maxd);
 
     m_pOne = pAction1;
diff --git a/cocos2dx/base_nodes/CCNode.cpp b/cocos2dx/base_nodes/CCNode.cpp
index a25a02c83f..577de0c874 100644
--- a/cocos2dx/base_nodes/CCNode.cpp
+++ b/cocos2dx/base_nodes/CCNode.cpp
@@ -411,7 +411,7 @@ void CCNode::cleanup()
 char * CCNode::description()
 {
 	char *ret = new char[100] ;
-	sprintf_s(ret, 100, "<CCNode | Tag = %d>", m_nTag);
+	sprintf(ret, "<CCNode | Tag = %d>", m_nTag);
 	return ret;
 }
 
diff --git a/cocos2dx/cocos2dx-uphone.vcproj b/cocos2dx/cocos2dx-uphone.vcproj
index 2894a3d1d6..5a623d2601 100644
--- a/cocos2dx/cocos2dx-uphone.vcproj
+++ b/cocos2dx/cocos2dx-uphone.vcproj
@@ -848,6 +848,10 @@
 				RelativePath=".\platform\CCXEGLView_platform.h"
 				>
 			</File>
+			<File
+				RelativePath=".\platform\CCXMath.h"
+				>
+			</File>
 			<File
 				RelativePath=".\platform\CCXUIImage_platform.h"
 				>
diff --git a/cocos2dx/menu_nodes/CCMenu.cpp b/cocos2dx/menu_nodes/CCMenu.cpp
index 4f8207d914..314bd7fe30 100644
--- a/cocos2dx/menu_nodes/CCMenu.cpp
+++ b/cocos2dx/menu_nodes/CCMenu.cpp
@@ -27,6 +27,7 @@ THE SOFTWARE.
 #include "CGPointExtension.h"
 #include "CCTouchDispatcher.h"
 #include "CCTouch.h"
+#include "platform/CCXMath.h"
 
 #include <vector>
 #include <float.h>
@@ -317,7 +318,7 @@ namespace cocos2d{
 				assert(rowColumns);
 
 				float tmp = (*it)->getContentSize().height;
-				rowHeight = (unsigned int)((rowHeight >= tmp || _isnan(tmp)) ? rowHeight : tmp);
+				rowHeight = (unsigned int)((rowHeight >= tmp || CCXMath::isnanCocos2d(tmp)) ? rowHeight : tmp);
 
 				++columnsOccupied;
 				if (columnsOccupied >= rowColumns)
@@ -361,7 +362,7 @@ namespace cocos2d{
 				}
 
 				float tmp = (*it)->getContentSize().height;
-				rowHeight = (unsigned int)((rowHeight >= tmp || _isnan(tmp)) ? rowHeight : tmp);
+				rowHeight = (unsigned int)((rowHeight >= tmp || CCXMath::isnanCocos2d(tmp)) ? rowHeight : tmp);
 
 				(*it)->setPosition(ccp(x - winSize.width / 2,
 					                   y - (*it)->getContentSize().height / 2));
@@ -430,7 +431,7 @@ namespace cocos2d{
 
 				// columnWidth = fmaxf(columnWidth, [item contentSize].width);
 				float tmp = (*it)->getContentSize().width;
-				columnWidth = (unsigned int)((columnWidth >= tmp || _isnan(tmp)) ? columnWidth : tmp);
+				columnWidth = (unsigned int)((columnWidth >= tmp || CCXMath::isnanCocos2d(tmp)) ? columnWidth : tmp);
 
 				columnHeight += (int)((*it)->getContentSize().height + 5);
 				++rowsOccupied;
@@ -478,7 +479,7 @@ namespace cocos2d{
 
 				// columnWidth = fmaxf(columnWidth, [item contentSize].width);
 				float tmp = (*it)->getContentSize().width;
-				columnWidth = (unsigned int)((columnWidth >= tmp || _isnan(tmp)) ? columnWidth : tmp);
+				columnWidth = (unsigned int)((columnWidth >= tmp || CCXMath::isnanCocos2d(tmp)) ? columnWidth : tmp);
 
 				(*it)->setPosition(ccp(x + columnWidths[column] / 2,
 					                   y - winSize.height / 2));