bool all() const; | (1) | (since C++11) |
bool any() const; | (2) | |
bool none() const; | (3) |
Checks if all, any or none of the bits are set to true.
1) Checks if all bits are set to
true 2) Checks if any bits are set to
true 3) Checks if none of the bits are set to
true Parameters
(none).
Return value
1)
true if all bits are set to true, otherwise false 2)
true if any of the bits are set to true, otherwise false 3)
true if none of the bits are set to true, otherwise false Exceptions
| (none) | (until C++11) |
noexcept specification: noexcept | (since C++11) |
Example
#include <iostream>
#include <bitset>
int main()
{
std::bitset<4> b1("0000");
std::bitset<4> b2("0101");
std::bitset<4> b3("1111");
std::cout << "bitset\t" << "all\t" << "any\t" << "none\n";
std::cout << b1 << '\t' << b1.all() << '\t' << b1.any() << '\t' << b1.none() << '\n';
std::cout << b2 << '\t' << b2.all() << '\t' << b2.any() << '\t' << b2.none() << '\n';
std::cout << b3 << '\t' << b3.all() << '\t' << b3.any() << '\t' << b3.none() << '\n';
}Output:
bitset all any none 0000 0 0 1 0101 0 1 0 1111 1 1 0
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