### Question:
CudaHalfDataBuffer extends BaseCudaDataBuffer { @Override public float[] asFloat() { return super.asFloat(); } CudaHalfDataBuffer(Pointer pointer, Indexer indexer, long length);  CudaHalfDataBuffer(long length);  CudaHalfDataBuffer(long length, boolean initialize);  CudaHalfDataBuffer(long length, int elementSize);  CudaHalfDataBuffer(long length, int elementSize, long offset);  CudaHalfDataBuffer(long length, boolean initialize, MemoryWorkspace workspace);  CudaHalfDataBuffer(float[] data, boolean copy, MemoryWorkspace workspace);  CudaHalfDataBuffer(DataBuffer underlyingBuffer, long length, long offset);  CudaHalfDataBuffer(float[] buffer);  CudaHalfDataBuffer(float[] data, boolean copy);  CudaHalfDataBuffer(float[] data, boolean copy, long offset);  CudaHalfDataBuffer(float[] data, boolean copy, long offset, MemoryWorkspace workspace);  CudaHalfDataBuffer(double[] data);  CudaHalfDataBuffer(double[] data, boolean copy);  CudaHalfDataBuffer(double[] data, boolean copy, long offset);  CudaHalfDataBuffer(int[] data);  CudaHalfDataBuffer(int[] data, boolean copy);  CudaHalfDataBuffer(int[] data, boolean copy, long offset);  CudaHalfDataBuffer(byte[] data, long length);  CudaHalfDataBuffer(ByteBuffer buffer, long length);  CudaHalfDataBuffer(ByteBuffer buffer, long length, long offset); @Override void assign(long[] indices, float[] data, boolean contiguous, long inc); @Override void assign(long[] indices, double[] data, boolean contiguous, long inc); @Override float[] getFloatsAt(long offset, long inc, int length); @Override double[] getDoublesAt(long offset, long inc, int length); @Override void setData(float[] data); @Override void setData(int[] data); @Override void setData(double[] data); @Override byte[] asBytes(); @Override Type dataType(); @Override float[] asFloat(); @Override double[] asDouble(); @Override int[] asInt(); @Override double getDouble(long i); @Override DataBuffer create(double[] data); @Override DataBuffer create(float[] data); @Override DataBuffer create(int[] data); @Override void flush();  }### Answer:
@Test public void testConversion1() throws Exception { DataBuffer bufferOriginal = new CudaFloatDataBuffer(new float[]{1f, 2f, 3f, 4f, 5f}); DataBuffer bufferHalfs = Nd4j.getNDArrayFactory().convertDataEx(DataBuffer.TypeEx.FLOAT, bufferOriginal, DataBuffer.TypeEx.FLOAT16); DataBuffer bufferRestored = Nd4j.getNDArrayFactory().convertDataEx(DataBuffer.TypeEx.FLOAT16, bufferHalfs, DataBuffer.TypeEx.FLOAT); logger.info("Buffer original: {}", Arrays.toString(bufferOriginal.asFloat())); logger.info("Buffer restored: {}", Arrays.toString(bufferRestored.asFloat())); assertArrayEquals(bufferOriginal.asFloat(), bufferRestored.asFloat(), 0.01f); }
@Test public void testSerialization1() throws Exception { DataBuffer bufferOriginal = new CudaFloatDataBuffer(new float[]{1f, 2f, 3f, 4f, 5f}); DataBuffer bufferHalfs = Nd4j.getNDArrayFactory().convertDataEx(DataBuffer.TypeEx.FLOAT, bufferOriginal, DataBuffer.TypeEx.FLOAT16); File tempFile = File.createTempFile("alpha", "11"); tempFile.deleteOnExit(); try(DataOutputStream dos = new DataOutputStream(Files.newOutputStream(Paths.get(tempFile.getAbsolutePath())))){ bufferHalfs.write(dos); } DataInputStream dis = new DataInputStream(new FileInputStream(tempFile.getAbsoluteFile())); DataBuffer bufferRestored = Nd4j.createBuffer(bufferOriginal.length()); bufferRestored.read(dis); assertArrayEquals(bufferOriginal.asFloat(), bufferRestored.asFloat(), 0.01f); }