Examples with SplittableRandom java8.util.SplittableRandom used on opensource projects

Example 6 with SplittableRandom

use of java8.util.SplittableRandom in project streamsupport by stefan-zobel.

the class SplittableRandomTest method testNextInt.

/**
 * Repeated calls to nextInt produce at least two distinct results
 */
public void testNextInt() {
    SplittableRandom sr = new SplittableRandom();
    int f = sr.nextInt();
    int i = 0;
    while (i < NCALLS && sr.nextInt() == f) ++i;
    assertTrue(i < NCALLS);
}

Example 7 with SplittableRandom

use of java8.util.SplittableRandom in project streamsupport by stefan-zobel.

the class SplittableRandomTest method testNextDouble.

/**
 * Repeated calls to nextDouble produce at least two distinct results
 */
public void testNextDouble() {
    SplittableRandom sr = new SplittableRandom();
    double f = sr.nextDouble();
    int i = 0;
    while (i < NCALLS && sr.nextDouble() == f) ++i;
    assertTrue(i < NCALLS);
}

Example 8 with SplittableRandom

use of java8.util.SplittableRandom 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() {
    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(x -> counter.increment());
        assertEquals(size, counter.sum());
        size += 524959;
    }
}

Example 9 with SplittableRandom

use of java8.util.SplittableRandom in project streamsupport by stefan-zobel.

the class SplittableRandomTest method testDoublesCount.

/**
 * A parallel sized stream of doubles generates the given number of values
 */
public void testDoublesCount() {
    LongAdder counter = new LongAdder();
    SplittableRandom r = new SplittableRandom();
    long size = 0;
    for (int reps = 0; reps < REPS; ++reps) {
        counter.reset();
        r.doubles(size).parallel().forEach(x -> counter.increment());
        assertEquals(size, counter.sum());
        size += 524959;
    }
}

Example 10 with SplittableRandom

use of java8.util.SplittableRandom in project streamsupport by stefan-zobel.

the class SplittableRandomTest method testNextLong.

/**
 * Repeated calls to nextLong produce at least two distinct results
 */
public void testNextLong() {
    SplittableRandom sr = new SplittableRandom();
    long f = sr.nextLong();
    int i = 0;
    while (i < NCALLS && sr.nextLong() == f) ++i;
    assertTrue(i < NCALLS);
}