lrn@google.com
d63af4cdc8
This changes the sequences generated by Random for a given seed,
since the internal state will not be the same as for the unmixed
seed.
It is consistent between VM and dart2js.
The provided integer seed is hashed as follows:
uint64 hash = 0;
while (seed > 0) {
hash = hash * 1037 + mix64((int64)seed);
seed >>= 64;
}
where mix64 mixes the bits of a 64-bit value.
The hash is used to initialize the random generator's internal state.
R=floitsch@google.com, iposva@google.com
Review URL: https://codereview.chromium.org//156533002
git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@32412 260f80e4-7a28-3924-810f-c04153c831b5
This is the repository of the Dart programming language and its associated tools, libraries, and samples. For license information, please see LICENSE. You can find more about Dart online at http://dartlang.org or http://code.google.com/p/dart. Here's a brief guide to what's in here: editor/ Eclipse-based standalone Dart IDE. lib/ Libraries that ship with the Dart runtime (core, html, etc.). pkg/ Packages that are not shipped with the core runtime. runtime/ Dart VM and code for running it as a standalone app. samples/ Sample Dart programs. tests/ Automated tests. third_party/ External dependencies. tools/ Build scripts, text editor support files, etc. utils/ Utilities for Dart applications.