76 lines
2.1 KiB
C++
Executable file
76 lines
2.1 KiB
C++
Executable file
#pragma once
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#include <stdint.h>
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#include <fc/string.hpp>
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#include <fc/vector.hpp>
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struct bignum_st;
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typedef bignum_st BIGNUM;
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namespace fc {
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class bigint {
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public:
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bigint( const std::vector<char>& bige );
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bigint( const char* bige, uint32_t l );
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bigint(uint64_t value);
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bigint( );
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bigint( const bigint& c );
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bigint( bigint&& c );
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explicit bigint( BIGNUM* n );
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~bigint();
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bigint& operator = ( const bigint& a );
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bigint& operator = ( bigint&& a );
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explicit operator bool()const;
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bool is_negative()const;
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int64_t to_int64()const;
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int64_t log2()const;
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bigint exp( const bigint& c )const;
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static bigint random( uint32_t bits, int t, int );
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bool operator < ( const bigint& c )const;
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bool operator > ( const bigint& c )const;
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bool operator >= ( const bigint& c )const;
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bool operator == ( const bigint& c )const;
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bool operator != ( const bigint& c )const;
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bigint operator + ( const bigint& a )const;
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bigint operator * ( const bigint& a )const;
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bigint operator / ( const bigint& a )const;
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bigint operator % ( const bigint& a )const;
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bigint operator /= ( const bigint& a );
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bigint operator *= ( const bigint& a );
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bigint& operator += ( const bigint& a );
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bigint& operator -= ( const bigint& a );
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bigint& operator <<= ( uint32_t i );
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bigint& operator >>= ( uint32_t i );
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bigint operator - ( const bigint& a )const;
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bigint operator++(int);
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bigint& operator++();
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bigint operator--(int);
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bigint& operator--();
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operator fc::string()const;
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// returns bignum as bigendian bytes
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operator std::vector<char>()const;
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BIGNUM* dup()const;
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BIGNUM* get()const { return n; }
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private:
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BIGNUM* n;
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};
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class variant;
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/** encodes the big int as base64 string, or a number */
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void to_variant( const bigint& bi, variant& v );
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/** decodes the big int as base64 string, or a number */
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void from_variant( const variant& v, bigint& bi );
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} // namespace fc
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