tree 7a6e6c7d494f2a9c26617c363bbb8ced18c3d563
parent e475674ef6e1877ee3367782eca8af6f7070497a
author Alexis Hetu <sugoi@google.com> 1526407639 -0400
committer Alexis Hétu <sugoi@google.com> 1526492672 +0000

Fixed atan corner case

atan(0, <negative>) was returning 0 instead of PI. Did a simple
fix in the arctan() function and added an associated unit test.

Change-Id: Idbbdaf099b5104e3aaa2868ca8fd806c6c735981
Reviewed-on: https://swiftshader-review.googlesource.com/18868
Tested-by: Alexis Hétu <sugoi@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>