[Bug 1614966] Re: libc has broken cos implementation

[Adam Conrad]

** Also affects: glibc (Ubuntu Xenial)
   Importance: Undecided
       Status: New

** Changed in: glibc (Ubuntu)
     Assignee: (unassigned) => Adam Conrad (adconrad)

** Changed in: glibc (Ubuntu Xenial)
     Assignee: (unassigned) => Adam Conrad (adconrad)

** Changed in: glibc (Ubuntu)
       Status: New => Fix Released

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

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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:
  In Progress

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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