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root/jsr166/jsr166/src/jsr166e/extra/AtomicDouble.java

Comparing jsr166/src/jsr166e/extra/AtomicDouble.java (file contents):
Revision 1.15 by jsr166, Mon Feb 11 06:29:57 2013 UTC vs.
Revision 1.18 by jsr166, Mon Mar 4 16:12:26 2013 UTC

#	Line 19 | Line 19 | import static java.lang.Double.longBitsT
19		* this class does extend {@code Number} to allow uniform access by
20		* tools and utilities that deal with numerically-based classes.
21		*
22	<	* <p><a name="bitEquals">This class compares primitive {@code double}
22	>	* <p id="bitEquals">This class compares primitive {@code double}
23		* values in methods such as {@link #compareAndSet} by comparing their
24		* bitwise representation using {@link Double#doubleToRawLongBits},
25		* which differs from both the primitive double {@code ==} operator
#	Line 29 | Line 29 | import static java.lang.Double.longBitsT
29		*   long xBits = Double.doubleToRawLongBits(x);
30		*   long yBits = Double.doubleToRawLongBits(y);
31		*   return xBits == yBits;
32	<	* }}</pre></a>
32	>	* }}</pre>
33		*
34		* @see jsr166e.DoubleAdder
35		* @see jsr166e.DoubleMaxUpdater
#	Line 123 | Line 123 | public class AtomicDouble extends Number
123		* if the current value is <a href="#bitEquals">bitwise equal</a>
124		* to the expected value.
125		*
126	<	* <p>May <a
126	>	* <p><a
127		* href="http://download.oracle.com/javase/7/docs/api/java/util/concurrent/atomic/package-summary.html#Spurious">
128	<	* fail spuriously</a>
129	<	* and does not provide ordering guarantees, so is only rarely an
130	<	* appropriate alternative to {@code compareAndSet}.
128	>	* May fail spuriously and does not provide ordering guarantees</a>,
129	>	* so is only rarely an appropriate alternative to {@code compareAndSet}.
130		*
131		* @param expect the expected value
132		* @param update the new value

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