mirror of
https://github.com/tc39/test262.git
synced 2025-10-14 20:38:55 +02:00
e49d2661a8
The global isNaN is not precise at all, and Number.isNaN is an ES6 feature that makes it preferrable to use assert's sameValue for NaN values, as it handles it internally using the comparison.
16 lines
535 B
JavaScript
16 lines
535 B
JavaScript
// Copyright 2009 the Sputnik authors. All rights reserved.
|
|
// This code is governed by the BSD license found in the LICENSE file.
|
|
|
|
/*---
|
|
info: >
|
|
If neither Result(2) nor any prefix of Result(2) satisfies the syntax of a
|
|
StrDecimalLiteral (see 9.3.1), return NaN
|
|
es5id: 15.1.2.3_A3_T1
|
|
description: parseFloat("some string") return NaN
|
|
---*/
|
|
|
|
assert.sameValue(parseFloat("str"), NaN, "str");
|
|
assert.sameValue(parseFloat("s1"), NaN, "s1");
|
|
assert.sameValue(parseFloat(""), NaN, "");
|
|
assert.sameValue(parseFloat("+"), NaN, "+");
|