hot fix

fix check overflow of operator-
RWFile: each line return 0 by default when an error occurred

QInt.cpp

@@ -607,8 +607,8 @@ QInt QInt::toConvertBu2() const
 }
 QInt QInt::operator- (const QInt& A) const
 {
-	if ((A < 0) && (A > MAX_VALUE() + *this)) throw("Overflow");
-	if ((A > 0) && (A < MIN_VALUE() + *this)) throw("Overflow");
+	if ((A < 0) && (*this > MAX_VALUE() + A)) throw("Overflow");
+	if ((A > 0) && (*this < MIN_VALUE() + A)) throw("Overflow");
 
 	// Subtraction without check overflow
 	QInt result = *this;

QInt.h

@@ -22,12 +22,12 @@ class QInt
     // dung union de int8 va int32 tro cung 1 vung nho
     union {
 
-        // bug cuc manh o int8, vui long khong xai truc tiep, hay xem ham byteAt giai thich (doi voi trinh bien dich cua windows, g++)
+        // vui long khong xai truc tiep int8, hay xem ham byteAt giai thich (khong dung doi voi windows, unix/linux)
         unsigned char int8[N_BYTE];
         unsigned int int32[N_UINT];
 
         unsigned char& byteAt(int pos) {
-            // use this funtion only when machine use Big Endian by default
+            // use this funtion only when machine use Little Endian by default
             // for more infomation, see this answer: https://stackoverflow.com/a/47335692
 
             int mod = pos % 4;

RWFile.cpp

@@ -65,7 +65,8 @@ bool RWFile::Start()
 		{
 			stringstream exeption;
 			exeption << "ERROR Line " << count << ": " << result;
-			this->results.push_back(exeption.str());
+			//this->results.push_back(exeption.str());
+			this->results.push_back(string("0"));
 		}
 	}