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#1807 — better wording for Math.roundFloat32

• bug_id: 1807
• creation_ts: 2013-08-23 15:21:00 -0700
• short_desc: better wording for Math.roundFloat32
• delta_ts: 2013-09-27 14:47:19 -0700
• product: Draft for 6th Edition
• component: editorial issue
• version: Rev 17: August 23, 2013 Draft
• rep_platform: All
• op_sys: All
• bug_status: RESOLVED
• resolution: FIXED
• priority: Normal
• bug_severity: enhancement
• everconfirmed: true
• reporter: Dave Herman
• assigned_to: Allen Wirfs-Brock

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• commentid: 5207
• comment_count: 0
• who: Dave Herman
• bug_when: 2013-08-23 15:21:24 -0700

The spec for Math.roundFloat32 refers to IEEE-868-2005 which I've never heard of, and I can't find any evidence of its existence on Google or the IEEE web site. :) I assume you meant IEEE-754-2008. But the rest of the spec simply refers to it as IEEE 754, so for consistency I'd use that wording.

Here's how I would write the steps:

* If x is NaN, return NaN.
* If x is one of -0, 0, +∞, -∞, the return x.
* Let x32 be the result of converting x to a value in IEEE 754 single-precision 32-bit binary format using roundTiesToEven.
* Let x64 be the result of converting x32 to a value in IEEE 754 double-precision 64-bit binary format.
* Return the ECMAScript number corresponding to x64.

Dave

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• commentid: 5378
• comment_count: 1
• who: Allen Wirfs-Brock
• bug_when: 2013-09-10 15:03:12 -0700

fixed in rev19 editor's draft

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• commentid: 5531
• comment_count: 2
• who: Allen Wirfs-Brock
• bug_when: 2013-09-27 14:47:19 -0700

fixed in rev19