@Test
public void testSizes() {
MXArray a = createDoubleMatrix(123, 456);
assertEquals(8L, MXLibrary.INSTANCE.mxGetElementSize(a).longValue());
assertEquals(123L, MXLibrary.INSTANCE.mxGetM(a).longValue());
assertEquals(456L, MXLibrary.INSTANCE.mxGetN(a).longValue());
assertEquals(2L, MXLibrary.INSTANCE.mxGetNumberOfDimensions(a).longValue());
assertEquals(123L * 456L, MXLibrary.INSTANCE.mxGetNumberOfElements(a).longValue());
Pointer dims = MXLibrary.INSTANCE.mxGetDimensions(a);
assertEquals(123L, dims.getNativeLong(0).longValue());
assertEquals(456L, dims.getNativeLong(NativeLong.SIZE).longValue());
NativeLong[] subs = null;
NativeLong singleSub = null;
// check single subscript of first element
subs = toNativeLongs(0, 0);
singleSub = MXLibrary.INSTANCE.mxCalcSingleSubscript(a, new NativeLong(subs.length), subs);
assertEquals(0L, singleSub.longValue());
// check single subscript of second element (MATLAB always uses
// column-major order)
subs = toNativeLongs(1, 0);
singleSub = MXLibrary.INSTANCE.mxCalcSingleSubscript(a, new NativeLong(subs.length), subs);
assertEquals(1L, singleSub.longValue());
// check single subscript of first element in second row
subs = toNativeLongs(0, 1);
singleSub = MXLibrary.INSTANCE.mxCalcSingleSubscript(a, new NativeLong(subs.length), subs);
assertEquals(123L, singleSub.longValue());
// check single subscript of last element
subs = toNativeLongs(122, 455);
singleSub = MXLibrary.INSTANCE.mxCalcSingleSubscript(a, new NativeLong(subs.length), subs);
assertEquals(123L * 456L - 1, singleSub.longValue());
destroy(a);
}
public final long getNativeLong(long offset) {
checkBounds(offset, Platform.getPlatform().longSize() >> 3);
return ptr.getNativeLong(offset).longValue();
}