bit::polynomial — Custom Formatting

We specialize the std::formatter class to connect any bit::polynomial to std::format and friends.

template<std::unsigned_integral Block, typename Allocator>
struct std::formatter<bit::polynomial<Block, Allocator>> {
    ...
};

Under the covers, this custom class calls the bit-polynomial’s to_string() method. The default polynomial “variable” is x but, as shown in the following examples, you can easily change that.

Example

#include <bit/bit.h>
int main()
{
    auto p = bit::polynomial<>::random(7);
    std::cout << std::format("Polynomial with default specifier:        {}\n", p);
    std::cout << std::format("Polynomial with variable 'y' specified:   {:y}\n", p);
    std::cout << std::format("Polynomial with variable 'M' specified:   {:M}\n", p);
    std::cout << std::format("Polynomial with variable 'mat' specified: {:mat}\n", p);
}

Output

Polynomial with default specifier:        1 + x^1 + x^2 + x^3 + x^7
Polynomial with variable 'y' specified:   1 + y^1 + y^2 + y^3 + y^7
Polynomial with variable 'M' specified:   1 + M^1 + M^2 + M^3 + M^7
Polynomial with variable 'mat' specified: 1 + mat^1 + mat^2 + mat^3 + mat^7

See Also

polynomial::to_string