55 lines
1.7 KiB
C++
Executable file
55 lines
1.7 KiB
C++
Executable file
#pragma once
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#include <fc/uint128.hpp>
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#define FC_REAL128_PRECISION (uint64_t(1000000) * uint64_t(1000000) * uint64_t(1000000))
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namespace fc {
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class variant;
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/**
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* Provides fixed point math operations based on decimal fractions
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* with 18 places.
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* Delegates to fc::bigint for multiplication and division.
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*/
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class real128
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{
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public:
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real128( uint64_t integer = 0);
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explicit real128( const std::string& str );
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operator std::string()const;
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friend real128 operator * ( real128 a, const real128& b ) { a *= b; return a; }
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friend real128 operator / ( real128 a, const real128& b ) { a /= b; return a; }
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friend real128 operator + ( real128 a, const real128& b ) { a += b; return a; }
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friend real128 operator - ( real128 a, const real128& b ) { a -= b; return a; }
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real128& operator += ( const real128& o );
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real128& operator -= ( const real128& o );
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real128& operator /= ( const real128& o );
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real128& operator *= ( const real128& o );
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static real128 from_fixed( const uint128& fixed );
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uint64_t to_uint64()const;
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private:
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uint128 fixed;
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};
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void to_variant( const real128& var, variant& vo );
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void from_variant( const variant& var, real128& vo );
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namespace raw
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{
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template<typename Stream>
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inline void pack( Stream& s, const real128& value_to_pack, uint32_t _max_depth=FC_PACK_MAX_DEPTH )
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{ s.write( (char*)&value_to_pack, sizeof(value_to_pack) ); }
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template<typename Stream>
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inline void unpack( Stream& s, real128& value_to_unpack, uint32_t _max_depth=FC_PACK_MAX_DEPTH )
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{ s.read( (char*)&value_to_unpack, sizeof(value_to_unpack) ); }
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}
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} // namespace fc
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