openjdk team mailing list archive

Thread
Date

Bug#910188: OpenJDK 11 arm64 Trig + Log intrinsics have accuracy issues

To: submit@xxxxxxxxxxxxxxx
From: Steve Capper <steve.capper@xxxxxxxxxx>
Date: Wed, 3 Oct 2018 13:49:12 +0100
Delivered-to: submit@xxxxxxxxxxxxxxx
Reply-to: Steve Capper <steve.capper@xxxxxxxxxx>, 910188@xxxxxxxxxxxxxxx
Resent-cc: OpenJDK Team <openjdk@xxxxxxxxxxxxxxxxxxx>
Resent-date: Wed, 03 Oct 2018 12:51:02 +0000
Resent-from: Steve Capper <steve.capper@xxxxxxxxxx>
Resent-message-id: <handler.910188.B.153857096712527@xxxxxxxxxxxxxxx>
Resent-to: debian-bugs-dist@xxxxxxxxxxxxxxxx

Package: openjdk-11
Version: 11~28-1
Severity: Important
Tags: patch

Hello,
Unfortunately, in OpenJDK11 there are precision bugs in the AArch64
intrinsics for sin, cos and log.

This has been reported on the jdk-updates-dev list:
http://mail.openjdk.java.net/pipermail/jdk-updates-dev/2018-September/000155.html

Could the AArch64 intrinsics for sin, cos and log please be
temporarily disabled (as per the patches in the link above)?

An effort is under way to fix the accuracy problems in OpenJDK 12, but
those fixes need to be written and reviewed.

Cheers,
--
Steve