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

Example 21 with Doubles

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

the class SplittableRandomTest method testUnsizedDoublesCount.

/**
 * A parallel unsized stream of doubles generates at least 100 values
 */
public void testUnsizedDoublesCount() {
    LongAdder counter = new LongAdder();
    SplittableRandom r = new SplittableRandom();
    long size = 100;
    r.doubles().limit(size).parallel().forEach(x -> counter.increment());
    assertEquals(size, counter.sum());
}

Example 22 with Doubles

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

the class SplittableRandomTest method testUnsizedDoublesCountSeq.

/**
 * A sequential unsized stream of doubles generates at least 100 values
 */
public void testUnsizedDoublesCountSeq() {
    LongAdder counter = new LongAdder();
    SplittableRandom r = new SplittableRandom();
    long size = 100;
    r.doubles().limit(size).forEach(x -> counter.increment());
    assertEquals(size, counter.sum());
}

Example 23 with Doubles

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

the class SplittableRandomTest method testBoundedDoubles.

/**
 * Each of a parallel sized stream of bounded doubles is within bounds
 */
public void testBoundedDoubles() {
    AtomicInteger fails = new AtomicInteger(0);
    SplittableRandom r = new SplittableRandom();
    long size = 456;
    for (double least = 0.00011; least < 1.0e20; least *= 9) {
        for (double bound = least * 1.0011; bound < 1.0e20; bound *= 17) {
            final double lo = least, hi = bound;
            r.doubles(size, lo, hi).parallel().forEach(x -> {
                if (x < lo || x >= hi)
                    fails.getAndIncrement();
            });
        }
    }
    assertEquals(0, fails.get());
}

Example 24 with Doubles

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

the class SplittableRandomTest method testBadStreamSize.

/**
 * Invoking sized ints, long, doubles, with negative sizes throws
 * IllegalArgumentException
 */
@SuppressWarnings("unused")
public void testBadStreamSize() {
    SplittableRandom r = new SplittableRandom();
    Runnable[] throwingActions = { () -> {
        java8.util.stream.IntStream x = r.ints(-1L);
    }, () -> {
        java8.util.stream.IntStream x = r.ints(-1L, 2, 3);
    }, () -> {
        java8.util.stream.LongStream x = r.longs(-1L);
    }, () -> {
        java8.util.stream.LongStream x = r.longs(-1L, -1L, 1L);
    }, () -> {
        java8.util.stream.DoubleStream x = r.doubles(-1L);
    }, () -> {
        java8.util.stream.DoubleStream x = r.doubles(-1L, .5, .6);
    } };
    assertThrows(IllegalArgumentException.class, throwingActions);
}

Example 25 with Doubles

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

the class DoubleAccumulatorTest method testToString.

/**
 * toString returns current value.
 */
public void testToString() {
    DoubleAccumulator acc = new DoubleAccumulator(Doubles::max, 0.0);
    assertEquals("0.0", acc.toString());
    acc.accumulate(1.0);
    assertEquals(Double.toString(1.0), acc.toString());
}