Examples with UIntIndexer org.bytedeco.javacpp.indexer.UIntIndexer used on opensource projects

Example 1 with UIntIndexer

use of org.bytedeco.javacpp.indexer.UIntIndexer in project javacpp by bytedeco.

the class IndexerTest method testUIntIndexer.

@Test
public void testUIntIndexer() {
    System.out.println("UIntIndexer");
    long size = 7 * 5 * 3 * 2;
    long[] sizes = { 7, 5, 3, 2 };
    long[] strides = { 5 * 3 * 2, 3 * 2, 2, 1 };
    final IntPointer ptr = new IntPointer(size);
    long start = 0x30000000L;
    for (int i = 0; i < size; i++) {
        ptr.position(i).put((int) (i + start));
    }
    UIntIndexer arrayIndexer = UIntIndexer.create(ptr.position(0), sizes, strides, false);
    UIntIndexer directIndexer = UIntIndexer.create(ptr.position(0), sizes, strides, true);
    long n = start;
    for (int i = 0; i < sizes[0]; i++) {
        assertEquals(n, arrayIndexer.get(i));
        assertEquals(n, directIndexer.get(i));
        for (int j = 0; j < sizes[1]; j++) {
            assertEquals(n, arrayIndexer.get(i, j));
            assertEquals(n, directIndexer.get(i, j));
            for (int k = 0; k < sizes[2]; k++) {
                assertEquals(n, arrayIndexer.get(i, j, k));
                assertEquals(n, directIndexer.get(i, j, k));
                for (int m = 0; m < sizes[3]; m++) {
                    long[] index = { i, j, k, m };
                    assertEquals(n, arrayIndexer.get(index));
                    assertEquals(n, directIndexer.get(index));
                    arrayIndexer.put(index, 2 * n);
                    directIndexer.put(index, 3 * n);
                    n++;
                }
            }
        }
    }
    try {
        arrayIndexer.get(size);
        fail("IndexOutOfBoundsException should have been thrown.");
    } catch (IndexOutOfBoundsException e) {
    }
    try {
        directIndexer.get(size);
        fail("IndexOutOfBoundsException should have been thrown.");
    } catch (IndexOutOfBoundsException e) {
    }
    System.out.println("arrayIndexer" + arrayIndexer);
    System.out.println("directIndexer" + directIndexer);
    for (int i = 0; i < size; i++) {
        assertEquals(3 * (i + start), ptr.position(i).get() & 0xFFFFFFFFL);
    }
    arrayIndexer.release();
    for (int i = 0; i < size; i++) {
        assertEquals(2 * (i + start), ptr.position(i).get() & 0xFFFFFFFFL);
    }
    System.gc();
    if (Loader.sizeof(Pointer.class) > 4)
        try {
            long longSize = 0x80000000L + 8192;
            final IntPointer longPointer = new IntPointer(longSize);
            assertEquals(longSize, longPointer.capacity());
            UIntIndexer longIndexer = UIntIndexer.create(longPointer);
            assertEquals(longIndexer.pointer(), longPointer);
            for (long i = 0; i < 8192; i++) {
                longPointer.put(longSize - i - 1, (int) i);
            }
            for (long i = 0; i < 8192; i++) {
                assertEquals(longIndexer.get(longSize - i - 1), i & 0xFFFFFFFFL);
            }
            System.out.println("longIndexer[0x" + Long.toHexString(longSize - 8192) + "] = " + longIndexer.get(longSize - 8192));
        } catch (OutOfMemoryError e) {
            System.out.println(e);
        }
    System.out.println();
}