Use round to nearest with ties to nearest even in FP16.rint

As stated in IEEE_754, the default rounding mode is
Round to nearest, ties to even. This CL switches the round implementation
to use this rounding method.

Test: cts-tradefed  run singleCommand cts-dev --module CtsLibcoreTestCases --test libcore.libcore.util.FP16Test
Change-Id: I7d91f7a3870d662a8c8b7a4fb3a26fe862e35901
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
2 files changed