ajout explications transformation float en fixed

d02/ex01/Fixed.cpp

@@ -1,22 +1,40 @@
 #include "Fixed.hpp"
 
 /*
- * function to print integers in binary
+ * functions to print numbers in binary
+ * for the float, found help from stackoverflow :
+ * https://stackoverflow.com/questions/474007/floating-point-to-binary-valuec
  */
 
-void printBits(std::string before, unsigned int num)
+std::string printBitsInt(int num)
 {
 	int i = 0;
 
-	std::cout << before;
-	for (unsigned int mask = 1U << 31; mask; mask = mask >> 1)
+	std::cout << "  ";
+	for (unsigned int mask = 1U << (sizeof(int) *8 -1); mask; mask >>= 1)
 	{
 		std::cout << ((num & mask) != 0);
 		i++;
-		if (i % 8 == 0)
+//		if (i % 8 == 0 && i < 32)
+		if (i == 1 || i == 9 || i == 24)
 			std::cout << ' ';
 	}
-	std::cout << "(" << (signed int)num << ")" << '\n';
+	return "";
+}
+
+std::string	printBitsFloat(float num)
+{
+	int	*p = (int *)&num;
+	int i = 0;
+
+	for (unsigned int mask = 1U << (sizeof(float) *8 -1); mask; mask >>= 1)
+	{
+		std::cout << ((*p & mask) != 0);
+		i++;
+		if (i == 1 || i == 9)
+			std::cout << ' ';
+	}
+	return "";
 }
 
 /*
@@ -37,18 +55,18 @@ int const Fixed::_max = -1U >> (_frac +1);
  */
 
 Fixed::Fixed() : _value(0) {
-	std::cout << "Default constructor called" << '\n';
+//	std::cout << "Default constructor called" << '\n';
 	return;
 }
 
 Fixed::Fixed(Fixed const & src) {
-	std::cout << "Copy constructor called" << '\n';
+//	std::cout << "Copy constructor called" << '\n';
 	*this = src;
 	return;
 }
 
 Fixed::~Fixed( void ) {
-	std::cout << "Destructor called" << '\n';
+//	std::cout << "Destructor called" << '\n';
 	return;
 }
 
@@ -57,27 +75,26 @@ Fixed::~Fixed( void ) {
  */
 
 Fixed::Fixed(int integer) {
-	std::cout << "Int constructor called" << '\n';
+//	std::cout << "Int constructor called" << '\n';
 
 	if (integer < ~this->_max || integer > this->_max)
 	{
 		std::cout << "error: integer out of range" << '\n';
 		return;
 	}
-	printBits("integer : ", integer);
+	std::cout << "integer : " << printBitsInt(integer) << " (" << integer << ")\n";
 	this->_value = integer << this->_frac;
-	printBits("integer : ", this->_value);
 }
 
 Fixed::Fixed(float const floater) {
-	std::cout << "Float constructor called" << '\n';
+//	std::cout << "Float constructor called" << '\n';
 
 	if (floater < ~this->_max || floater > this->_max)
 	{
 		std::cout << "error: float out of range" << '\n';
 		return;
 	}
-
+	std::cout << "floater : " << printBitsFloat(floater) << " (" << floater << ")\n";
 
 }
 
@@ -86,7 +103,7 @@ Fixed::Fixed(float const floater) {
  */
 
 Fixed &	Fixed::operator=( Fixed const & rhs ) {
-	std::cout << "Copy assignment operator called" << '\n';
+//	std::cout << "Copy assignment operator called" << '\n';
 	if ( this != &rhs )
 		this->_value = rhs.getRawBits();
 
@@ -98,7 +115,7 @@ Fixed &	Fixed::operator=( Fixed const & rhs ) {
  */
 
 int		Fixed::getRawBits( void ) const {
-	std::cout << "getRawBits member function called" << '\n';
+//	std::cout << "getRawBits member function called" << '\n';
 	return this->_value;
 }
 
@@ -110,3 +127,5 @@ void	Fixed::toFloat( void ) const {}
 int		Fixed::toInt( void ) const {
 	return 0;
 }
+
+

d02/ex01/main.cpp

@@ -3,8 +3,7 @@
 
 int main( void ) {
 
-	Fixed a( 1 );
-	Fixed const b( 1.5 );
+	Fixed		a(1105979538);
 
 //	Fixed a;
 //	Fixed const b( 10 );