bigint.hpp

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#ifndef BIGINT_HPP_
#define BIGINT_HPP_
#include <cstddef>
#include <gmp.h>
#include <iostream>
#include <libff/common/serialization.hpp>
 
namespace libff
{
 
template<mp_size_t n> class bigint;
template<mp_size_t n>
std::ostream &operator<<(std::ostream &, const bigint<n> &);
template<mp_size_t n> std::istream &operator>>(std::istream &, bigint<n> &);
 
template<mp_size_t n> class bigint
{
public:
    static const mp_size_t N = n;
 
    mp_limb_t data[n] = {0};
 
    bigint() = default;
    bigint(const unsigned long x);
    bigint(const char *s);
    bigint(const mpz_t r);
 
    void print() const;
    void print_hex() const;
    bool operator==(const bigint<n> &other) const;
    bool operator!=(const bigint<n> &other) const;
    void clear();
    bool is_zero() const;
 
    static constexpr size_t max_bits() { return n * GMP_NUMB_BITS; };
 
    size_t num_bits() const;
 
    unsigned long as_ulong() const; 
    void to_mpz(mpz_t r) const;
    bool test_bit(const std::size_t bitno) const;
 
    bigint &randomize();
 
    friend std::ostream &operator<<<n>(std::ostream &out, const bigint<n> &b);
    friend std::istream &operator>><n>(std::istream &in, bigint<n> &b);
};
 
} // namespace libff
 
#include <libff/algebra/fields/bigint.tcc>
 
#endif // BIGINT_HPP_