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New Zero struct implements "compare with zero."

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* Zero lets classes efficiently compare with 0, so
  you can use constructors like x < zero or y != zero.
* New BEAST_CONSTEXPR to handle Windows/C++11 differences
  regarding the constexpr specifier.
This commit is contained in:
Tom Swirly
2014-04-10 19:14:52 -04:00
committed by Vinnie Falco
parent 524f41177c
commit 64ee0d07d0
26 changed files with 591 additions and 425 deletions
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6
src/ripple_data/protocol/STAmountRound.cpp
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@@ -203,7 +203,7 @@ STAmount STAmount::subRound (const STAmount& v1, const STAmount& v2, bool roundU
STAmount STAmount::mulRound (const STAmount& v1, const STAmount& v2,
const uint160& uCurrencyID, const uint160& uIssuerID, bool roundUp)
{
if (v1.isZero () || v2.isZero ())
if (v1 == zero || v2 == zero)
return STAmount (uCurrencyID, uIssuerID);
if (v1.mIsNative && v2.mIsNative && uCurrencyID.isZero ())
@@ -267,10 +267,10 @@ STAmount STAmount::mulRound (const STAmount& v1, const STAmount& v2,
STAmount STAmount::divRound (const STAmount& num, const STAmount& den,
const uint160& uCurrencyID, const uint160& uIssuerID, bool roundUp)
{
if (den.isZero ())
if (den == zero)
throw std::runtime_error ("division by zero");
if (num.isZero ())
if (num == zero)
return STAmount (uCurrencyID, uIssuerID);
std::uint64_t numVal = num.mValue, denVal = den.mValue;