[Bug 1000498] [NEW] fmod() incorrectly returns NaN for (some?) denormalized inputs

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You have been subscribed to a public bug by Chris J Arges (christopherarges):

[Impact]
When using fmod, some inputs will cause incorrect results.

[Fix]
An upstream eglibc patch (c5bfe3d5ba29d36563f1e4bd4f8d7336093ee6fc) fixes this particular issue.

[Test Case]
See comment https://bugs.launchpad.net/ubuntu/+source/eglibc/+bug/1000498/comments/1 for a C program that exhibits this issue.

[Regression Potential]
This adds the fixes for fmod and adds the appropriate test cases in eglibc.

[Original Report]
See http://sourceware.org/bugzilla/show_bug.cgi?id=14048.

** Affects: eglibc
     Importance: Medium
         Status: Fix Released

** Affects: eglibc (Ubuntu)
     Importance: Medium
     Assignee: Adam Conrad (adconrad)
         Status: In Progress

** Affects: eglibc (Ubuntu Precise)
     Importance: Medium
     Assignee: Adam Conrad (adconrad)
         Status: In Progress

** Affects: eglibc (Ubuntu Quantal)
     Importance: Medium
     Assignee: Adam Conrad (adconrad)
         Status: In Progress


** Tags: patch
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fmod() incorrectly returns NaN for (some?) denormalized inputs
https://bugs.launchpad.net/bugs/1000498
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