def test_forward_gpu():
x = cuda.to_gpu(numpy.array([[1, 2, 3], [6, 5, 4]], dtype=numpy.float32))
output = shifted_softplus(x)
expect_output = numpy.array(
[[0.62011445, 1.4337809, 2.3554401], [5.3093286, 4.313568, 3.3250027]],
dtype=numpy.float32)
numpy.allclose(cuda.to_cpu(output.array), expect_output)
def test_forward_avoid_overflow_gpu():
x = cuda.to_gpu(numpy.array([1e5], dtype=numpy.float32))
output = shifted_softplus(x)
expect_output = numpy.array([1e5], dtype=numpy.float32)
numpy.allclose(cuda.to_cpu(output.array), expect_output)
def test_forward_zero_gpu():
x = cuda.to_gpu(numpy.zeros((2, 3), dtype=numpy.float32))
output = shifted_softplus(x)
expect_output = numpy.zeros((2, 3), dtype=numpy.float32)
numpy.allclose(cuda.to_cpu(output.array), expect_output)