Add a stand-alone Bfloat16 implementation for testing purposes. -------------
Commit messages: - JDK-8356104: Add bfloat16 implementation for testing purposes Changes: https://git.openjdk.org/valhalla/pull/1890/files Webrev: https://webrevs.openjdk.org/?repo=valhalla&pr=1890&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8356104 Stats: 4029 lines in 4 files changed: 4029 ins; 0 del; 0 mod Patch: https://git.openjdk.org/valhalla/pull/1890.diff Fetch: git fetch https://git.openjdk.org/valhalla.git pull/1890/head:pull/1890 PR: https://git.openjdk.org/valhalla/pull/1890
