[Bug 1614966] Re: libc has broken cos implementation

[Andy Whitcroft]

Hello Mwelinder, or anyone else affected,

Accepted glibc into xenial-proposed. The package will build now and be
available at https://launchpad.net/ubuntu/+source/glibc/2.23-0ubuntu4 in
a few hours, and then in the -proposed repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to
enable and use -proposed.  Your feedback will aid us getting this update
out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested, and change the tag
from verification-needed to verification-done. If it does not fix the
bug for you, please add a comment stating that, and change the tag to
verification-failed.  In either case, details of your testing will help
us make a better decision.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance!

** Changed in: glibc (Ubuntu Xenial)
       Status: In Progress => Fix Committed

** Tags added: verification-needed

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https://bugs.launchpad.net/bugs/1614966

Title:
  libc has broken cos implementation

Status in glibc package in Ubuntu:
  Fix Released
Status in glibc source package in Xenial:
  Fix Committed

Bug description:
  glibc 2.23 has a broken implementation of cos.

  To see that, enter "=cos(1.5689793435451356)" into gnumeric or localc.  A correct result is close
  to 0, but libc and thus gnumeric/localc return ~1.

  As per https://sourceware.org/bugzilla/show_bug.cgi?id=20357 this is
  fixed in 2.24

  Suggestion: backport fix for that.

  
  Seen on Ubuntu 16.04 (well, Mint 18).

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