Examples with IntUnaryOperator java.util.function.IntUnaryOperator used on opensource projects

Example 6 with IntUnaryOperator

use of java.util.function.IntUnaryOperator in project MindsEye by SimiaCryptus.

the class TestUtil method shuffle.

/**
 * Shuffle int stream.
 *
 * @param stream the stream
 * @return the int stream
 */
public static IntStream shuffle(@Nonnull IntStream stream) {
    // http://primes.utm.edu/lists/small/10000.txt
    long coprimeA = 41387;
    long coprimeB = 9967;
    long ringSize = coprimeA * coprimeB - 1;
    @Nonnull IntToLongFunction fn = x -> (x * coprimeA * coprimeA) % ringSize;
    @Nonnull LongToIntFunction inv = x -> (int) ((x * coprimeB * coprimeB) % ringSize);
    @Nonnull IntUnaryOperator conditions = x -> {
        assert x < ringSize;
        assert x >= 0;
        return x;
    };
    return stream.map(conditions).mapToLong(fn).sorted().mapToInt(inv);
}

Example 7 with IntUnaryOperator

use of java.util.function.IntUnaryOperator in project ignite by apache.

the class IndexQueryRangeTest method check.

/**
 * @param left First cache key, inclusive.
 * @param right Last cache key, exclusive.
 */
private void check(Query<Cache.Entry<Long, Person>> qry, int left, int right) throws Exception {
    QueryCursor<Cache.Entry<Long, Person>> cursor = cache.query(qry);
    int expSize = (right - left) * duplicates;
    Set<Long> expKeys = new HashSet<>(expSize);
    List<Integer> expOrderedValues = new LinkedList<>();
    boolean desc = idxName.equals(DESC_IDX);
    int from = desc ? right - 1 : left;
    int to = desc ? left - 1 : right;
    IntUnaryOperator op = (i) -> desc ? i - 1 : i + 1;
    for (int i = from; i != to; i = op.applyAsInt(i)) {
        for (int j = 0; j < duplicates; j++) {
            expOrderedValues.add(i);
            expKeys.add((long) CNT * j + i);
        }
    }
    AtomicInteger actSize = new AtomicInteger();
    ((QueryCursorEx<Cache.Entry<Long, Person>>) cursor).getAll(entry -> {
        assertEquals(expOrderedValues.remove(0).intValue(), entry.getValue().id);
        assertTrue(expKeys.remove(entry.getKey()));
        int persId = entry.getKey().intValue() % CNT;
        assertEquals(new Person(persId), entry.getValue());
        actSize.incrementAndGet();
    });
    assertEquals(expSize, actSize.get());
    assertTrue(expKeys.isEmpty());
}

Example 8 with IntUnaryOperator

use of java.util.function.IntUnaryOperator in project j2objc by google.

the class IntUnaryOperatorTest method testAndThen_null.

public void testAndThen_null() throws Exception {
    IntUnaryOperator plusOne = x -> x + 1;
    try {
        plusOne.andThen(null);
        fail();
    } catch (NullPointerException expected) {
    }
}

Example 9 with IntUnaryOperator

use of java.util.function.IntUnaryOperator in project j2objc by google.

the class IntUnaryOperatorTest method testCompose.

public void testCompose() throws Exception {
    IntUnaryOperator plusOne = x -> x + 1;
    IntUnaryOperator twice = x -> 2 * x;
    assertEquals(11, plusOne.compose(twice).applyAsInt(5));
}

Example 10 with IntUnaryOperator

use of java.util.function.IntUnaryOperator in project j2objc by google.

the class IntUnaryOperatorTest method testAndThen.

public void testAndThen() throws Exception {
    IntUnaryOperator plusOne = x -> x + 1;
    IntUnaryOperator twice = x -> 2 * x;
    assertEquals(12, plusOne.andThen(twice).applyAsInt(5));
}