ajout max for fixed point range

d02/ex01/Fixed.cpp

@@ -1,5 +1,9 @@
 #include "Fixed.hpp"
 
+/*
+ * function to print integers in binary
+ */
+
 void printBits(std::string before, unsigned int num)
 {
 	int i = 0;
@@ -12,51 +16,89 @@ void printBits(std::string before, unsigned int num)
 		if (i % 8 == 0)
 			std::cout << ' ';
 	}
-	std::cout << "(" << num << ")" << '\n';
+	std::cout << "(" << (signed int)num << ")" << '\n';
 }
 
-// default/parametric constructor
-Fixed::Fixed( void ) : _value( 0 ) {
+/*
+ * statics variables initialisation
+ *
+ * for MAX integer :
+ * 00000000 01111111 11111111 11111111 ( 8388607) (-1U >> (this->_frac +1))
+ *              <= ... >=
+ * 11111111 10000000 00000000 00000000 (-8388608)
+ *
+ */
+
+int const Fixed::_frac = 8;
+int const Fixed::_max = -1U >> (_frac +1);
+
+/*
+ * default constructor / copy constructor / destructor
+ */
+
+Fixed::Fixed() : _value(0) {
 	std::cout << "Default constructor called" << '\n';
 	return;
 }
 
-// copy constructor
-Fixed::Fixed( Fixed const & src ) {
+Fixed::Fixed(Fixed const & src) {
 	std::cout << "Copy constructor called" << '\n';
 	*this = src;
 	return;
 }
 
-// destructor
 Fixed::~Fixed( void ) {
 	std::cout << "Destructor called" << '\n';
 	return;
 }
 
-Fixed::Fixed( int integer ) {
+/*
+ * int and float constructors
+ */
 
-	std::cout << integer << '\n';
-	printBits("integer      : ", integer);
+Fixed::Fixed(int integer) {
+	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);
 	this->_value = integer << this->_frac;
-	printBits("this->_value : ", this->_value);
+	printBits("integer : ", this->_value);
+}
+
+Fixed::Fixed(float const floater) {
+	std::cout << "Float constructor called" << '\n';
+
+	if (floater < ~this->_max || floater > this->_max)
+	{
+		std::cout << "error: float out of range" << '\n';
+		return;
+	}
+
 
 }
 
-// assignement operator
-Fixed &	Fixed::operator=( Fixed const & rhs ) {
+/*
+ * assignement operator
+ */
 
+Fixed &	Fixed::operator=( Fixed const & rhs ) {
 	std::cout << "Copy assignment operator called" << '\n';
 	if ( this != &rhs )
 		this->_value = rhs.getRawBits();
 
 	return *this;
-
 }
 
+/*
+ * other functions
+ */
+
 int		Fixed::getRawBits( void ) const {
 	std::cout << "getRawBits member function called" << '\n';
-
 	return this->_value;
 }
 
@@ -64,3 +106,7 @@ void	Fixed::setRawBits( int const raw ) {
 	this->_value = raw;
 }
 
+void	Fixed::toFloat( void ) const {}
+int		Fixed::toInt( void ) const {
+	return 0;
+}