diff --git a/ttmath/ttmathbig.h b/ttmath/ttmathbig.h
index 68e1037..a850786 100644
--- a/ttmath/ttmathbig.h
+++ b/ttmath/ttmathbig.h
@@ -985,7 +985,7 @@ public:
 		// man_result = mantissa * ss2.mantissa
 		mantissa.MulInt(ss2, man_result);
 
-		int bit = UInt<man>::FindLeadingBitInWord(man_result.table[man]); // man - last word
+		sint bit = UInt<man>::FindLeadingBitInWord(man_result.table[man]); // man - last word
 		
 		if( bit!=-1 && uint(bit) > (TTMATH_BITS_PER_UINT/2) )
 		{
@@ -4039,11 +4039,11 @@ public:
 		(signs are not checked, we don't check the NaN flag too)
 
 		sample:
-			Big<1,1> a, b;
-			a = " 1234.5678";
-			b = "-1234.5677999";
-			// binary a:  10011010010.100100010101101101010
-			// binary b: -10011010010.100100010101101101000
+			Big<1,1> a, b;
+			a = " 1234.5678";
+			b = "-1234.5677999";
+			// binary a:  10011010010.100100010101101101010
+			// binary b: -10011010010.100100010101101101000
 			// two last bits are different
 			if( a.AboutEqualWithoutSign(b, 2) ) // the result is true
 				std::cout << "true" << std::endl;
@@ -4093,11 +4093,11 @@ public:
 
 		this method is similar to AboutEqualWithoutSign but the signs are checked now
 		sample:
-			Big<1,1> a, b;
-			a = "456.6789";
-			b = "456.678901";
-			// binary a: 111001000.10101101110011000101111
-			// binary b: 111001000.10101101110011000110111
+			Big<1,1> a, b;
+			a = "456.6789";
+			b = "456.678901";
+			// binary a: 111001000.10101101110011000101111
+			// binary b: 111001000.10101101110011000110111
 			// five last bits are different
 			if( a.AboutEqual(b, 5) ) // the result is true
 				std::cout << "true" << std::endl;
diff --git a/ttmath/ttmathparser.h b/ttmath/ttmathparser.h
index e145b3d..af5ac5f 100644
--- a/ttmath/ttmathparser.h
+++ b/ttmath/ttmathparser.h
@@ -1356,6 +1356,8 @@ void Avg(int sindex, int amount_of_args, ValueType & result)
 
 
 
+
+
 /*!
 	we use such a method because 'wvsprintf' is not everywhere defined
 */
@@ -1364,14 +1366,25 @@ void Sprintf(tt_char * buffer, int par)
 char buf[30]; // char, not tt_char
 int i;
 
+	#ifdef _MSC_VER
+	#pragma warning( disable: 4996 )
+	//warning C4996: 'sprintf': This function or variable may be unsafe.
+	#endif
+
 	sprintf(buf, "%d", par);
 	for(i=0 ; buf[i] != 0 ; ++i)
 		buffer[i] = buf[i];
 
 	buffer[i] = 0;
+
+	#ifdef _MSC_VER
+	#pragma warning( default: 4996 )
+	#endif
 }
 
 
+
+
 /*!
 	this method returns the value from a user-defined function
 
@@ -1678,7 +1691,7 @@ void ReadValue(Item & result, int reading_base)
 const tt_char * new_stack_pointer;
 bool value_read;
 
-	int carry = result.value.FromString(pstring, reading_base, &new_stack_pointer, &value_read);
+	uint carry = result.value.FromString(pstring, reading_base, &new_stack_pointer, &value_read);
 	pstring   = new_stack_pointer;
 
 	if( carry )
@@ -1979,7 +1992,7 @@ return 0;
 void MakeStandardMathematicOperation(ValueType & value1, typename MatOperator::Type mat_operator,
 									const ValueType & value2)
 {
-int res;
+uint res;
 
 	switch( mat_operator )
 	{
diff --git a/ttmath/ttmathuint_noasm.h b/ttmath/ttmathuint_noasm.h
index d0e46a4..b315328 100644
--- a/ttmath/ttmathuint_noasm.h
+++ b/ttmath/ttmathuint_noasm.h
@@ -741,11 +741,11 @@ namespace ttmath
 			temp1.u_.high = a_.u_.low;
 			temp1.u_.low  = b_.u_.high;
 
-			res_.u_.high  = temp1.u / c;
-			temp2.u_.high = temp1.u % c;
+			res_.u_.high  = (unsigned int)(temp1.u / c);
+			temp2.u_.high = (unsigned int)(temp1.u % c);
 			temp2.u_.low  = b_.u_.low;
 			
-			res_.u_.low  = temp2.u / c;
+			res_.u_.low  = (unsigned int)(temp2.u / c);
 			*rest        = temp2.u % c;
 
 			*r = res_.u;