Examples with Longs java8.lang.Longs used on opensource projects

Example 6 with Longs

use of java8.lang.Longs in project streamsupport by stefan-zobel.

the class LongAccumulatorTest method testGetThenReset.

/**
 * getThenReset() returns current value; subsequent get() returns zero
 */
public void testGetThenReset() {
    LongAccumulator acc = new LongAccumulator(Longs::max, 0L);
    acc.accumulate(2);
    assertEquals(2, acc.get());
    assertEquals(2, acc.getThenReset());
    assertEquals(0, acc.get());
}

Example 7 with Longs

use of java8.lang.Longs in project streamsupport by stefan-zobel.

the class ThreadLocalRandom8Test method testBoundedLongs.

/**
 * Each of a parallel sized stream of bounded longs is within bounds
 */
public void testBoundedLongs() {
    AtomicInteger fails = new AtomicInteger(0);
    ThreadLocalRandom r = ThreadLocalRandom.current();
    long size = 123L;
    for (long least = -86028121; least < MAX_LONG_BOUND; least += 1982451653L) {
        for (long bound = least + 2; bound > least && bound < MAX_LONG_BOUND; bound += Math.abs(bound * 7919)) {
            final long lo = least, hi = bound;
            r.longs(size, lo, hi).parallel().forEach(x -> {
                if (x < lo || x >= hi)
                    fails.getAndIncrement();
            });
        }
    }
    assertEquals(0, fails.get());
}

Example 8 with Longs

use of java8.lang.Longs in project streamsupport by stefan-zobel.

the class SplittableRandomTest method testBoundedLongs.

/**
 * Each of a parallel sized stream of bounded longs is within bounds
 */
public void testBoundedLongs() {
    final AtomicInteger fails = new AtomicInteger(0);
    SplittableRandom r = new SplittableRandom();
    long size = 123L;
    for (long least = -86028121; least < MAX_LONG_BOUND; least += 1982451653L) {
        for (long bound = least + 2; bound > least && bound < MAX_LONG_BOUND; bound += Math.abs(bound * 7919)) {
            final long lo = least, hi = bound;
            r.longs(size, lo, hi).parallel().forEach(new LongConsumer() {

                @Override
                public void accept(long x) {
                    if (x < lo || x >= hi)
                        fails.getAndIncrement();
                }
            });
        }
    }
    assertEquals(fails.get(), 0);
}

Example 9 with Longs

use of java8.lang.Longs in project streamsupport by stefan-zobel.

the class SplittableRandomTest method testLongsCount.

/**
 * A parallel sized stream of longs generates the given number of values
 */
public void testLongsCount() {
    final LongAdder counter = new LongAdder();
    SplittableRandom r = new SplittableRandom();
    long size = 0;
    for (int reps = 0; reps < REPS; ++reps) {
        counter.reset();
        r.longs(size).parallel().forEach(new LongConsumer() {

            @Override
            public void accept(long x) {
                counter.increment();
            }
        });
        assertEquals(counter.sum(), size);
        size += 524959;
    }
}

Example 10 with Longs

use of java8.lang.Longs in project streamsupport by stefan-zobel.

the class SplittableRandomTest method testUnsizedLongsCount.

/**
 * A parallel unsized stream of longs generates at least 100 values
 */
public void testUnsizedLongsCount() {
    final LongAdder counter = new LongAdder();
    SplittableRandom r = new SplittableRandom();
    long size = 100;
    r.longs().limit(size).parallel().forEach(new LongConsumer() {

        @Override
        public void accept(long x) {
            counter.increment();
        }
    });
    assertEquals(counter.sum(), size);
}