| Front Page / Metafunctions / Bitwise Operations / bitand_ |
template<
typename T1
, typename T2
, typename T3 = unspecified
...
, typename Tn = unspecified
>
struct bitand_
{
typedef unspecified type;
};
Returns the result of bitwise and (&) operation of its arguments.
#include <boost/mpl/bitand.hpp> #include <boost/mpl/bitwise.hpp>
| Parameter | Requirement | Description |
|---|---|---|
| T1, T2,... Tn | Integral Constant | Operation's arguments. |
[Note: The requirements listed in this specification are the ones imposed by the default implementation. See Numeric Metafunction concept for the details on how to provide an implementation for a user-defined numeric type that does not satisfy the Integral Constant requirements. — end note]
For any Integral Constants c1,c2,... cn:
typedef bitand_<c1,...cn>::type r;
| Return type: | Integral Constant. |
|---|---|
| Semantics: | Equivalent to typedef integral_c< typeof(c1::value & c2::value) , ( c1::value & c2::value ) > c; typedef bitand_<c,c3,...cn>::type r; |
typedef bitand_<c1,...cn> r;
| Return type: | Integral Constant. |
|---|---|
| Semantics: | Equivalent to struct r : bitand_<c1,...cn>::type {}; |
Amortized constant time.
typedef integral_c<unsigned,0> u0; typedef integral_c<unsigned,1> u1; typedef integral_c<unsigned,2> u2; typedef integral_c<unsigned,8> u8; typedef integral_c<unsigned,0xffffffff> uffffffff; BOOST_MPL_ASSERT_RELATION( (bitand_<u0,u0>::value), ==, 0 ); BOOST_MPL_ASSERT_RELATION( (bitand_<u1,u0>::value), ==, 0 ); BOOST_MPL_ASSERT_RELATION( (bitand_<u0,u1>::value), ==, 0 ); BOOST_MPL_ASSERT_RELATION( (bitand_<u0,uffffffff>::value), ==, 0 ); BOOST_MPL_ASSERT_RELATION( (bitand_<u1,uffffffff>::value), ==, 1 ); BOOST_MPL_ASSERT_RELATION( (bitand_<u8,uffffffff>::value), ==, 8 );