Examples with ShortBuffer java.nio.ShortBuffer used on opensource projects

Example 61 with ShortBuffer

use of java.nio.ShortBuffer in project RoaringBitmap by RoaringBitmap.

the class TestUtil method testIterateUntil.

@Test
public void testIterateUntil() {
    ShortBuffer data = ShortBuffer.wrap(new short[] { 0, 3, 16, 18, 21, 29, 30, -342 });
    Assert.assertEquals(1, BufferUtil.iterateUntil(data, 0, data.limit(), BufferUtil.toIntUnsigned((short) 3)));
    Assert.assertEquals(5, BufferUtil.iterateUntil(data, 0, data.limit(), BufferUtil.toIntUnsigned((short) 28)));
    Assert.assertEquals(5, BufferUtil.iterateUntil(data, 0, data.limit(), BufferUtil.toIntUnsigned((short) 29)));
    Assert.assertEquals(7, BufferUtil.iterateUntil(data, 0, data.limit(), BufferUtil.toIntUnsigned((short) -342)));
}

Example 62 with ShortBuffer

use of java.nio.ShortBuffer in project RoaringBitmap by RoaringBitmap.

the class TestUtil method testUnsignedIntersects.

@Test
public void testUnsignedIntersects() {
    ShortBuffer data1 = ShortBuffer.wrap(new short[] { -100, -98, -96, -94, -92, -90, -88, -86, -84, -82, -80 });
    ShortBuffer data2 = ShortBuffer.wrap(new short[] { -99, -97, -95, -93, -91, -89, -87, -85, -83, -81, -79 });
    ShortBuffer data3 = ShortBuffer.wrap(new short[] { -99, -97, -95, -93, -91, -89, -87, -85, -83, -81, -80 });
    ShortBuffer data4 = ShortBuffer.wrap(new short[] {});
    ShortBuffer data5 = ShortBuffer.wrap(new short[] {});
    Assert.assertFalse(BufferUtil.unsignedIntersects(data1, data1.limit(), data2, data2.limit()));
    Assert.assertTrue(BufferUtil.unsignedIntersects(data1, data1.limit(), data3, data3.limit()));
    Assert.assertFalse(BufferUtil.unsignedIntersects(data4, data4.limit(), data5, data5.limit()));
}

Example 63 with ShortBuffer

use of java.nio.ShortBuffer in project RoaringBitmap by RoaringBitmap.

the class TestUtil method testCopy.

@Test
public void testCopy() {
    ShortBuffer sb = ShortBuffer.allocate(64);
    sb.position(32);
    ShortBuffer slice = sb.slice();
    ShortBuffer dest = ShortBuffer.allocate(64);
    for (int k = 0; k < 32; ++k) slice.put(k, (short) k);
    BufferUtil.arraycopy(slice, 16, dest, 16, 16);
    for (int k = 16; k < 32; ++k) Assert.assertEquals((short) k, dest.get(k));
    BufferUtil.arraycopy(slice, 0, dest, 16, 16);
    for (int k = 16; k < 32; ++k) Assert.assertEquals((short) (k - 16), dest.get(k));
    BufferUtil.arraycopy(slice, 16, dest, 0, 16);
    for (int k = 0; k < 16; ++k) Assert.assertEquals((short) (k + 16), dest.get(k));
}

Example 64 with ShortBuffer

use of java.nio.ShortBuffer in project RoaringBitmap by RoaringBitmap.

the class ReverseRunContainerShortIterator method toShortBuffer.

/**
 * Return the content of this container as a ShortBuffer. This creates a copy and might be
 * relatively slow.
 *
 * @return the ShortBuffer
 */
public ShortBuffer toShortBuffer() {
    ShortBuffer sb = ShortBuffer.allocate(this.nbrruns * 2);
    sb.put(this.valueslength, 0, this.nbrruns * 2);
    return sb;
}

Example 65 with ShortBuffer

use of java.nio.ShortBuffer in project RoaringBitmap by RoaringBitmap.

the class ImmutableRoaringArray method getContainerAtIndex.

@Override
public MappeableContainer getContainerAtIndex(int i) {
    // sad but ByteBuffer is not thread-safe so it is either a
    ByteBuffer tmp = buffer.duplicate();
    // duplicate or a lock
    // note that tmp will indeed be garbage-collected some time after the end of this function
    tmp.order(buffer.order());
    tmp.position(getOffsetContainer(i));
    boolean hasrun = hasRunCompression();
    if (isRunContainer(i, hasrun)) {
        // first, we have a short giving the number of runs
        int nbrruns = BufferUtil.toIntUnsigned(tmp.getShort());
        final ShortBuffer shortArray = tmp.asShortBuffer();
        shortArray.limit(2 * nbrruns);
        return new MappeableRunContainer(shortArray, nbrruns);
    }
    int cardinality = getCardinality(i);
    // if not a
    final boolean isBitmap = cardinality > MappeableArrayContainer.DEFAULT_MAX_SIZE;
    // runcontainer
    if (isBitmap) {
        final LongBuffer bitmapArray = tmp.asLongBuffer();
        bitmapArray.limit(MappeableBitmapContainer.MAX_CAPACITY / 64);
        return new MappeableBitmapContainer(bitmapArray, cardinality);
    } else {
        final ShortBuffer shortArray = tmp.asShortBuffer();
        shortArray.limit(cardinality);
        return new MappeableArrayContainer(shortArray, cardinality);
    }
}