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Enhance createRound by using toNumber to allow binary and octal strings.

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This commit is contained in:
Xotic750
2015-11-03 10:18:16 +01:00
committed by John-David Dalton
parent ec8ccbcc55
commit 3eda8e64f3
2 changed files with 16 additions and 4 deletions
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8
lodash.js
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@@ -4148,15 +4148,15 @@
function createRound(methodName) {
var func = Math[methodName];
return function(number, precision) {
number = toNumber(number);
precision = precision ? toInteger(precision) : 0;
if (precision) {
// Shift with exponential notation to avoid floating-point issues.
// See [MDN](https://mdn.io/round#Examples) for more details.
var pair = (+number + 'e').split('e'),
value = func(pair[0] + 'e' + (+pair[1] + precision));
var pair = (toString(number) + 'e').split('e'),
value = toString(func(pair[0] + 'e' + (+pair[1] + precision)));
pair = (value + 'e').split('e');
return +(pair[0] + 'e' + (pair[1] - precision));
return +(pair[0] + 'e' + (+pair[1] - precision));
}
return func(number);
};

12
test/test.js
View File

@@ -16130,7 +16130,19 @@
actual = func('5e1e1', 1);
assert.deepEqual(actual, NaN);
});
QUnit.test('`_.' + methodName + '` should preserve sign of `0`', function(assert) {
assert.expect(1);
var values = [[0], [-0], ['0'], ['-0'], [0, 1], [-0, 1], ['0', 1], ['-0', 1]],
expected = [Infinity, -Infinity, Infinity, -Infinity, Infinity, -Infinity, Infinity, -Infinity];
var actual = lodashStable.map(values, function(args) {
return 1 / func.apply(undefined, args);
});
assert.deepEqual(actual, expected);
});
});