tyler.durden/test262
1
0
Fork 0
mirror of https://github.com/tc39/test262.git synced 2025-07-24 22:45:10 +02:00
Code Issues Packages Projects Releases Wiki Activity

Merge pull request #931 from littledan/tofixed-exactness

Browse Source 
Test for the difference between toFixed and toString
This commit is contained in:
Rick Waldron 2017-04-06 11:54:56 -04:00 committed by GitHub
commit 2ac9ab1d31
1 changed files with 19 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
test/built-ins/Number/prototype/toFixed/exactness.js vendored Normal file
View File

@ -0,0 +1,19 @@
// Copyright (C) 2017 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-number.prototype.tofixed
description: Number.prototype.toFixed does not use ToString's cleaner rounding
info: >
Number.prototype.toFixed ( fractionDigits )
...
8. Else x < 10^21,
a. Let n be an integer for which the exact mathematical value of n ÷ 10f - x is as close to zero as possible. If there are two such n, pick the larger n.
b. If n = 0, let m be the String "0". Otherwise, let m be the String consisting of the digits of the decimal representation of n (in order, with no leading zeroes).
...
---*/
// Test from a note in the specification
assert.sameValue((1000000000000000128).toString(0), "1000000000000000100");
assert.sameValue((1000000000000000128).toFixed(0), "1000000000000000128");