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59431c513a
These numeric types replace the monolithic functionality found in STAmount. They are not used yet.
127 lines
2.9 KiB
C++
127 lines
2.9 KiB
C++
//------------------------------------------------------------------------------
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/*
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This file is part of rippled: https://github.com/ripple/rippled
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Copyright (c) 2012, 2013 Ripple Labs Inc.
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Permission to use, copy, modify, and/or distribute this software for any
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purpose with or without fee is hereby granted, provided that the above
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copyright notice and this permission notice appear in all copies.
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THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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ANY SPECIAL , DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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//==============================================================================
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#ifndef RIPPLE_PROTOCOL_XRPAMOUNT_H_INCLUDED
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#define RIPPLE_PROTOCOL_XRPAMOUNT_H_INCLUDED
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#include <ripple/protocol/SystemParameters.h>
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#include <beast/utility/noexcept.h>
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#include <beast/utility/Zero.h>
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#include <boost/operators.hpp>
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#include <cstdint>
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using beast::zero;
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namespace ripple {
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class XRPAmount
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: private boost::totally_ordered <XRPAmount>
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, private boost::additive <XRPAmount>
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{
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private:
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std::int64_t value_;
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public:
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/** @{ */
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XRPAmount () = default;
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XRPAmount (XRPAmount const& other) = default;
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XRPAmount& operator= (XRPAmount const& other) = default;
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XRPAmount (beast::Zero)
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: value_ (0)
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{
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}
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XRPAmount&
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operator= (beast::Zero)
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{
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value_ = 0;
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return *this;
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}
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XRPAmount (std::int64_t value)
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: value_ (value)
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{
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}
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XRPAmount&
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operator= (std::int64_t v)
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{
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value_ = v;
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return *this;
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}
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XRPAmount&
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operator+= (XRPAmount const& other)
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{
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value_ += other.value_;
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return *this;
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}
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XRPAmount&
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operator-= (XRPAmount const& other)
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{
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value_ -= other.value_;
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return *this;
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}
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XRPAmount
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operator- () const
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{
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return { -value_ };
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}
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bool
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operator==(XRPAmount const& other) const
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{
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return value_ == other.value_;
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}
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bool
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operator<(XRPAmount const& other) const
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{
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return value_ < other.value_;
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}
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/** Returns true if the amount is not zero */
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explicit
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operator bool() const noexcept
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{
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return value_ != 0;
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}
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/** Return the sign of the amount */
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int
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signum() const noexcept
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{
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return (value_ < 0) ? -1 : (value_ ? 1 : 0);
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}
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};
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/** Returns true if the amount does not exceed the initial XRP in existence. */
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inline
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bool isLegalAmount (XRPAmount const& amount)
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{
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return amount <= SYSTEM_CURRENCY_START;
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}
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}
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#endif
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