std::bitset<N>::to_ulong

unsigned long to_ulong() const

Converts the contents of the bitset to an unsigned long integer.

The first bit of the bitset corresponds to the least significant digit of the number and the last bit corresponds to the most significant digit.

Parameters

(none).

Return value

the converted integer.

Exceptions

throws std::overflow_error if the value can not be represented in unsigned long.

Example

#include <iostream>
#include <bitset>
 
int main()
{
    for (unsigned long i = 0; i < 10; ++i) {
        std::bitset<5> b(i);
        std::bitset<5> b_inverted = ~b;
        std::cout << i << '\t';
        std::cout << b << '\t';
        std::cout << b_inverted << '\t';
        std::cout << b_inverted.to_ulong() << '\n'; 
    }
}

Output:

0        00000        11111        31
1        00001        11110        30
2        00010        11101        29
3        00011        11100        28
4        00100        11011        27
5        00101        11010        26
6        00110        11001        25
7        00111        11000        24
8        01000        10111        23
9        01001        10110        22

to_string	returns a string representation of the data (public member function)
to_ullong (C++11)	returns an `unsigned long long` integer representation of the data (public member function)

std::bitset<N>::to_ulong

Parameters

Return value

Exceptions

Example

See also