First cut at a version of complex numbers using the textbook algorithms for the arithmetic operations. This version is intended for prototyping and _not_ for production use.
------------- Commit messages: - Appease jcheck. - 8376040: Add prototype "textbook complex" class Changes: https://git.openjdk.org/valhalla/pull/1942/files Webrev: https://webrevs.openjdk.org/?repo=valhalla&pr=1942&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8376040 Stats: 446 lines in 1 file changed: 446 ins; 0 del; 0 mod Patch: https://git.openjdk.org/valhalla/pull/1942.diff Fetch: git fetch https://git.openjdk.org/valhalla.git pull/1942/head:pull/1942 PR: https://git.openjdk.org/valhalla/pull/1942
