bigint.hpp

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#ifndef BIGINT_HPP_
#define BIGINT_HPP_
#include <cstddef>
#include <iostream>
 
#include <gmp.h>
 
#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;
    size_t max_bits() const { 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);
};
 
} // libff
#include <libff/algebra/fields/bigint.tcc>
#endif