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Restore [(10X+3)(10Y+3)]/100 rounding.

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This commit is contained in:
JoelKatz
2012-12-11 16:10:13 -08:00
parent 7652a75edb
commit 44b3c6eda7
1 changed files with 20 additions and 8 deletions
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28
src/js/amount.js
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@@ -750,19 +750,31 @@ Amount.prototype.issuer = function () {
Amount.prototype.multiply = function (v) { Amount.prototype.multiply = function (v) {
var result; var result;
if (!this.is_comparable(v)) { if (this._is_native && v._is_native) {
result = Amount.NaN();
}
else if (this._is_native) {
result = new Amount(); result = new Amount();
result._value = this._value.multiply(v._value); result._value = this._value.multiply(v._value);
} }
else { else {
var v1 = this._value.multiply(consts.bi_10).add(3); var v1 = this._value;
var o1 = this._offset - 1; var o1 = this._offset;
var v2 = v._value.multiply(consts.bi_10).add(3); var v2 = v._value;
var o2 = v._offset - 1; var o2 = v._offset;
while (o1._value.compareTo(consts.bi_man_min_value) < 0 ) {
v1 = v1.multiply(consts.bi_10);
o1 -= 1;
}
while (o2._value.compareTo(consts.bi_man_min_value) < 0 ) {
v2 = v2.multiply(consts.bi_10);
o2 -= 1;
}
v1 = v1.multiply(consts.bi_10).add(3);
o1 -= 1;
v2 = v2.multiply(consts.bi_10).add(3);
o2 -= 1;
result = new Amount(); result = new Amount();
result._offset = o1 + o2 + 2; result._offset = o1 + o2 + 2;