[Webkit-unassigned] [Bug 185115] New: Math.round() produces wrong result for value prior to 0.5

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Sat Apr 28 16:12:58 PDT 2018


https://bugs.webkit.org/show_bug.cgi?id=185115

            Bug ID: 185115
           Summary: Math.round() produces wrong result for value prior to
                    0.5
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: corydoras at ridiculousfish.com

Math.round(0.499999999999999944) produces 1.0; it should produce 0.0. Likewise for the negated input.

Note 0.499999999999999944 is the largest representable double less than 0.5.

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