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Add Amount#invert.

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Stefan Thomas
2013-08-14 17:11:30 -07:00
parent 8640176a07
commit 1e1e70d9a6
1 changed files with 15 additions and 0 deletions
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15
src/js/ripple/amount.js
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@@ -556,6 +556,21 @@ Amount.prototype.negate = function () {
return this.clone('NEGATE'); return this.clone('NEGATE');
}; };
/**
* Invert this amount and return the new value.
*
* Creates a new Amount object as a copy of the current one (including the same
* unit (currency & issuer), inverts it (1/x) and returns the result.
*/
Amount.prototype.invert = function () {
var one = this.clone();
one._value = BigInteger.ONE;
one._offset = 0;
one._is_negative = false;
one.canonicalize();
return one.ratio_human(this);
};
/** /**
* Tries to correctly interpret an amount as entered by a user. * Tries to correctly interpret an amount as entered by a user.
* *