This PR implements nth root computation for `BigInteger`s using Newton method and optimizes `BigInteger.pow(int)` method.
------------- Commit messages: - Remove trailing whitespaces - Merge branch 'openjdk:master' into BigInteger-nth-root - Add nthRoot(int) methods and optimize pow(int) Changes: https://git.openjdk.org/jdk/pull/24690/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=24690&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8077587 Stats: 246 lines in 2 files changed: 207 ins; 16 del; 23 mod Patch: https://git.openjdk.org/jdk/pull/24690.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/24690/head:pull/24690 PR: https://git.openjdk.org/jdk/pull/24690
