`GF2::Vector` — Construction From as Integer

Factory method to construct a bit-vector by copying the bit values from some unsigned integer value.

static constexpr Vector from(std::unsigned_integral auto src);

This templated method returns a bit-vector constructed from the bits that make up the src word.

The size of the bit-vector will be the std::sizeof for the specific std::unsigned_integral used as the argument. Note that there is no requirement that argument type and Block are the same. The argument might be a 32-bit unsigned which will create a bit-vector of size 32 packed into the default 64-bit block.

This isn’t a constructor because we don’t want src to be treated as the number of vector elements—instead it’s the actual bits that we copy in to the bit-vector.

Example

#include <GF2/GF2.h>
int main()
{
    uint16_t val = 65535;
    auto v1 = GF2::Vector<>::from(val);
    std::cout << "v1 = " << v1 << " has size " << v1.size() << std::endl;
}

Output

v1 = 1111111111111111 has size 16

GF2::Vector — Construction From as Integer

`GF2::Vector` — Construction From as Integer