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If an addition or subtraction has a microscopic amount left, make it zero.

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This commit is contained in:
JoelKatz
2013-03-31 10:37:08 -07:00
parent fbe8823439
commit ac202c199d
1 changed files with 6 additions and 2 deletions
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8
src/cpp/ripple/Amount.cpp
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@@ -799,7 +799,9 @@ STAmount operator+(const STAmount& v1, const STAmount& v2)
// this addition cannot overflow an int64, it can overflow an STAmount and the constructor will throw
int64 fv = vv1 + vv2;
if (fv >= 0)
if ((fv >= -10) && (fv <= 10))
return STAmount(v1.getFName(), v1.mCurrency, v1.mIssuer);
else if (fv >= 0)
return STAmount(v1.getFName(), v1.mCurrency, v1.mIssuer, fv, ov1, false);
else
return STAmount(v1.getFName(), v1.mCurrency, v1.mIssuer, -fv, ov1, true);
@@ -834,7 +836,9 @@ STAmount operator-(const STAmount& v1, const STAmount& v2)
// this subtraction cannot overflow an int64, it can overflow an STAmount and the constructor will throw
int64 fv = vv1 - vv2;
if (fv >= 0)
if ((fv >= -10) && (fv <= 10))
return STAmount(v1.getFName(), v1.mCurrency, v1.mIssuer);
else if (fv >= 0)
return STAmount(v1.getFName(), v1.mCurrency, v1.mIssuer, fv, ov1, false);
else
return STAmount(v1.getFName(), v1.mCurrency, v1.mIssuer, -fv, ov1, true);