/*
// Copyright (c) 2010-2017 Intel Corporation
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
*/

/*
  This pseudorandom number generator is based on ref_xorshift128plus,
  as implemented by reference_xorshift.h, which has been obtained
  from https://sourceforge.net/projects/xorshift-cpp/

  The licensing terms for reference_xorshift.h are reproduced below.

  //  Written in 2014 by Ivo Doko (ivo.doko@gmail.com)
  //  based on code written by Sebastiano Vigna (vigna@acm.org)
  //  To the extent possible under law, the