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root/jsr166/jsr166/src/main/java/util/SplittableRandom.java

Comparing jsr166/src/main/java/util/SplittableRandom.java (file contents):
Revision 1.21 by dl, Thu Sep 19 23:19:43 2013 UTC vs.
Revision 1.23 by dl, Fri Sep 20 14:06:46 2013 UTC

#	Line 25 | Line 25
25
26		package java.util;
27
28	–	import java.security.SecureRandom;
28		import java.net.NetworkInterface;
30	–	import java.util.Enumeration;
29		import java.util.concurrent.atomic.AtomicLong;
30		import java.util.function.IntConsumer;
31		import java.util.function.LongConsumer;
#	Line 89 | Line 87 | import java.util.stream.DoubleStream;
87		* @author  Doug Lea
88		* @since   1.8
89		*/
90	<	public class SplittableRandom {
90	>	public final class SplittableRandom {
91
92		/*
93		* Implementation Overview.
#	Line 197 | Line 195 | public class SplittableRandom {
195		return z ^ (z >>> 32);
196		}
197
200	–	private static long xmix64(long z) {
201	–	z *= 0xbf58476d1ce4e5b9L;
202	–	z = (z ^ (z >>> 27)) * 0x94d049bb133111ebL;
203	–	return z ^ (z >>> 31);
204	–	}
205	–
198		/**
199		* Returns the 32 high bits of Stafford variant 4 mix64 function as int.
200		*/
#	Line 248 | Line 240 | public class SplittableRandom {
240		long h = 0L;
241		try {
242		Enumeration<NetworkInterface> ifcs =
243	<	NetworkInterface.getNetworkInterfaces();
243	>	NetworkInterface.getNetworkInterfaces();
244		boolean retry = false; // retry once if getHardwareAddress is null
245		while (ifcs.hasMoreElements()) {
246		NetworkInterface ifc = ifcs.nextElement();
#	Line 410 | Line 402 | public class SplittableRandom {
402		* may, and typically does, vary across program invocations.
403		*/
404		public SplittableRandom() { // emulate defaultGen.split()
405	<	long s = defaultGen.getAndAdd(2*GOLDEN_GAMMA);
405	>	long s = defaultGen.getAndAdd(2 * GOLDEN_GAMMA);
406		this.seed = mix64(s);
407		this.gamma = mixGamma(s + GOLDEN_GAMMA);
408		}

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