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1bb99e5d3c
Substantial reductions in an offer's effective quality from its initial quality may clog offer books.
126 lines
3.2 KiB
C++
126 lines
3.2 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_AMOUNTCONVERSION_H_INCLUDED
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#define RIPPLE_PROTOCOL_AMOUNTCONVERSION_H_INCLUDED
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#include <ripple/basics/IOUAmount.h>
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#include <ripple/basics/XRPAmount.h>
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#include <ripple/protocol/STAmount.h>
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namespace ripple {
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inline STAmount
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toSTAmount(IOUAmount const& iou, Issue const& iss)
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{
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bool const isNeg = iou.signum() < 0;
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std::uint64_t const umant = isNeg ? -iou.mantissa() : iou.mantissa();
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return STAmount(
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iss,
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umant,
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iou.exponent(),
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/*native*/ false,
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isNeg,
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STAmount::unchecked());
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}
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inline STAmount
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toSTAmount(IOUAmount const& iou)
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{
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return toSTAmount(iou, noIssue());
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}
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inline STAmount
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toSTAmount(XRPAmount const& xrp)
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{
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bool const isNeg = xrp.signum() < 0;
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std::uint64_t const umant = isNeg ? -xrp.drops() : xrp.drops();
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return STAmount(umant, isNeg);
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}
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inline STAmount
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toSTAmount(XRPAmount const& xrp, Issue const& iss)
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{
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assert(isXRP(iss.account) && isXRP(iss.currency));
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return toSTAmount(xrp);
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}
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template <class T>
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T
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toAmount(STAmount const& amt) = delete;
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template <>
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inline STAmount
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toAmount<STAmount>(STAmount const& amt)
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{
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return amt;
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}
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template <>
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inline IOUAmount
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toAmount<IOUAmount>(STAmount const& amt)
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{
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assert(amt.mantissa() < std::numeric_limits<std::int64_t>::max());
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bool const isNeg = amt.negative();
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std::int64_t const sMant =
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isNeg ? -std::int64_t(amt.mantissa()) : amt.mantissa();
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assert(!isXRP(amt));
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return IOUAmount(sMant, amt.exponent());
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}
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template <>
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inline XRPAmount
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toAmount<XRPAmount>(STAmount const& amt)
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{
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assert(amt.mantissa() < std::numeric_limits<std::int64_t>::max());
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bool const isNeg = amt.negative();
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std::int64_t const sMant =
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isNeg ? -std::int64_t(amt.mantissa()) : amt.mantissa();
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assert(isXRP(amt));
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return XRPAmount(sMant);
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}
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template <class T>
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T
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toAmount(IOUAmount const& amt) = delete;
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template <>
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inline IOUAmount
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toAmount<IOUAmount>(IOUAmount const& amt)
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{
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return amt;
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}
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template <class T>
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T
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toAmount(XRPAmount const& amt) = delete;
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template <>
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inline XRPAmount
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toAmount<XRPAmount>(XRPAmount const& amt)
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{
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return amt;
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}
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} // namespace ripple
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#endif
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