This PR replaces construction of intermediate strings to be parsed with more direct manipulation of numbers. It also has a more streamlined mechanism of handling `Long.MIN_VALUE` when parsing longs by using `Long.parseUnsignedLong`
As a small side-effect it also eliminates the use of a cached StringBuilder in DigitList. Testing: - GHA - Local run of tier 2 and jtreg:jdk/java/text - New benchmark: DecimalFormatParseBench ------------- Commit messages: - Merge branch 'openjdk:master' into digitlist-getdouble-get-long - simplify getBigDecimal - simplify comparison - update comment - copyright dates - improve getDouble, getLong Changes: https://git.openjdk.org/jdk/pull/25644/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=25644&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8358880 Stats: 177 lines in 4 files changed: 119 ins; 46 del; 12 mod Patch: https://git.openjdk.org/jdk/pull/25644.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/25644/head:pull/25644 PR: https://git.openjdk.org/jdk/pull/25644
