1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63
| #include <iostream>
/* Expression template du IF C Then A ELSE B. */
template<bool b, typename T1, typename T2>
class If
{
public:
typedef T1 Res;
};
template<typename T1, typename T2>
class If<false, T1, T2>
{
public:
typedef T2 Res;
};
/* Classe template pour la gestion des erreurs de Int<int>. */
template<bool b>
class ValidInt
{
};
template<>
class ValidInt<true>
{
public:
typedef int NB_BYTES_NOT_MODULO_8;
typedef int NB_BYTES_TOO_HIGHT;
};
/* Gestion des entiers de taille spécifique. */
template<int bits>
class Int
{
public:
typedef
typename If<
!(bits%8),
typename If<
(sizeof(char)==bits/8),
char,
typename If<
(sizeof(short)==bits/8),
short,
typename If<
(sizeof(int)==bits/8),
int,
typename If<
(sizeof(long)==bits/8),
long,
typename ValidInt<sizeof(long)>=bits/8>::NB_BYTES_TOO_HIGHT
>::Res
>::Res
>::Res
>::Res,
typename ValidInt<!(bits%8)>::NB_BYTES_NOT_MODULO_8
>::Res
T;
};
typedef Int<8>::T Int8;
typedef Int<16>::T Int16;
typedef Int<32>::T Int32; |
Partager