Add Math.round issue

Author: kgryte

docs/native_math_bugs.md

@@ -31,9 +31,9 @@
 * [Predictable `Math.random` in WebKit][@bug:webkit:26972]
 * [Predictable `Math.random` in WebKit][@bug:chromium:246054]
 * [Desire for fastmath implementations][@bug:mozilla:681357]
+* [Mozilla `Math.round` issues][@bug:mozilla:686708]
 
 
-* [Webkit switched to weak PRNG for speed][18]
 * [If `Math.floor` provided `-0`, V8 deoptimizes][19]
 * [If `Math.ceil` provided `0`, V8 deoptimizes][20]
 * [Accuracy of `Math.round` in V8][21]
@@ -87,6 +87,7 @@
 [@bug:webkit:26972]: https://bugs.webkit.org/show_bug.cgi?id=26972
 [@bug:chromium:246054]: https://bugs.chromium.org/p/chromium/issues/detail?id=246054
 [@bug:mozilla:681357]: https://bugzilla.mozilla.org/show_bug.cgi?id=681357
+[@bug:mozilla:686708]: https://bugzilla.mozilla.org/show_bug.cgi?id=686708
 
 [v8-issue-tracker]: https://bugs.chromium.org/p/v8/issues/list?can=1&q=math&colspec=ID%20Type%20Status%20Priority%20Owner%20Summary%20HW%20OS%20Component%20Stars&num=100&start=100
 [webkit-issue-tracker]: https://bugs.webkit.org/buglist.cgi?quicksearch=math

docs/references/bugs.bib

@@ -236,3 +236,12 @@ @misc{bug:mozilla:681357
 	year = {2011}
 }
 
+@misc{bug:mozilla:686708,
+	abstract = {Returns the Number value that is closest to x and is equal to a mathematical integer. If two integer Number values are equally close to x, then the result is the Number value that is closer to +INFINITY. If x is already an integer, the result is x. - If x is -0, the result is -0. Math.round(-0); --> 0 (should be -0). Infinity/Math.round(-0) --> +Infinity (should be -Infinity)},
+	keywords = {math, javascript, mozilla, firefox, round},
+	notes = {},
+	title = {{Math.round() does not handle -0 and -0.5 properly}},
+	url = {https://bugzilla.mozilla.org/show_bug.cgi?id=686708},
+	year = {2011}
+}
+