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This bug was fixed in the package openjdk-lts - 11.0.1+13-3ubuntu1

---------------
openjdk-lts (11.0.1+13-3ubuntu1) disco; urgency=medium

  * Sync packages with 11.0.1+13-3:
    - Tighten dependency on debhelper on recent releases. Closes: #911694.
    - Reproducible properties file header when SOURCE_DATE_EPOCH is specified.
      Closes: #914278.
    - Add SOURCE_DATE_EPOCH support to the javadoc tool. Closes: #783938.
    - Disable AArch64 intrinsics for sin, cos and log. Closes: #910188.
      LP: #1796982.
    - Add support for DEB_BUILD_OPTIONS=terse. Closes: #912211.

 -- Matthias Klose <doko@xxxxxxxxxx>  Fri, 30 Nov 2018 12:15:34 +0100

** Changed in: openjdk-lts (Ubuntu)
       Status: New => Fix Released

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https://bugs.launchpad.net/bugs/1796982

Title:
  [Regression] AArch64: log and cos/sin intrinsics give incorrect
  results

Status in openjdk-lts package in Ubuntu:
  Fix Released
Status in openjdk-lts source package in Cosmic:
  New

Bug description:
  Upstream bug: https://bugs.openjdk.java.net/browse/JDK-8211105
  Reference (w/ workaround): http://mail.openjdk.java.net/pipermail/jdk-updates-dev/2018-September/000155.html

  $ cat LogTest.java
  public class LogTest {
      public static void main(String[] args) {
          double x = 4.9E-324;
          System.out.println(Math.log(x));
          System.out.println(StrictMath.log(x));
      }
  }

  $ cat CosTest.java
  public class CosTest {
      public static void main(String[] args) {
          System.out.println(Math.cos(1647100));
      }
  }

  $ javac LogTest.class

  With 10.0.2+13-1ubuntu1 (correct):
  $ java LogTest
  -744.4400719213812
  -744.4400719213812

  With 11~28-3ubuntu1 (incorrect):
  $ java LogTest
  -710.989276736877
  -744.4400719213812

  $ javac CosTest.class

  With 10.0.2+13-1ubuntu1 (correct):
  $ java CosTest
  0.7833030468809974

  With 11~28-3ubuntu1 (incorrect):
  $ java CosTest
  -0.2745634094819721

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