def test_straightforward(self):
     x, y, z = inputs()
     e = mul(add(x, y), div_proxy(x, y))
     C = Composite([x, y], [e])
     c = C.make_node(x, y)
     # print c.c_code(['x', 'y'], ['z'], dict(id = 0))
     g = FunctionGraph([x, y], [c.out])
     fn = gof.DualLinker().accept(g).make_function()
     assert fn(1.0, 2.0) == 1.5

 def test_with_constants(self):
     x, y, z = inputs()
     e = mul(add(70.0, y), div_proxy(x, y))
     C = Composite([x, y], [e])
     c = C.make_node(x, y)
     assert "70.0" in c.op.c_code(c, 'dummy', ['x', 'y'], ['z'], dict(id = 0))
     # print c.c_code(['x', 'y'], ['z'], dict(id = 0))
     g = FunctionGraph([x, y], [c.out])
     fn = gof.DualLinker().accept(g).make_function()
     assert fn(1.0, 2.0) == 36.0

 def test_many_outputs(self):
     x, y, z = inputs()
     e0 = x + y + z
     e1 = x + y * z
     e2 = x / y
     C = Composite([x, y, z], [e0, e1, e2])
     c = C.make_node(x, y, z)
     # print c.c_code(['x', 'y', 'z'], ['out0', 'out1', 'out2'], dict(id = 0))
     g = FunctionGraph([x, y, z], c.outputs)
     fn = gof.DualLinker().accept(g).make_function()
     assert fn(1.0, 2.0, 3.0) == [6.0, 7.0, 0.5]

 def test_composite_clone_float32(self):
     w = int8()
     x = float16()
     y = float32()
     cz = Composite([x, y], [tanh(x + cast(y, 'float16'))])
     c = Composite([w, x, y], [cz(x, y) - cz(x, y)**2 +
                               cast(x, 'int16') + cast(x, 'float32') +
                               cast(w, 'float16') -
                               constant(np.float16(1.0))])
     assert has_f16(c)
     nc = c.clone_float32()
     assert not has_f16(nc)

    def test_composite_printing(self):
        x, y, z = floats('xyz')
        e0 = x + y + z
        e1 = x + y * z
        e2 = x / y
        e3 = x // 5
        e4 = -x
        e5 = x - y
        e6 = x ** y + (-z)
        e7 = x % 3
        C = Composite([x, y, z], [e0, e1, e2, e3, e4, e5, e6, e7])
        c = C.make_node(x, y, z)
        g = FunctionGraph([x, y, z], c.outputs)
        fn = gof.DualLinker().accept(g).make_function()

        assert str(g) == ('[*1 -> Composite{((i0 + i1) + i2),'
                          ' (i0 + (i1 * i2)), (i0 / i1), '
                          '(i0 // Constant{5}), '
                          '(-i0), (i0 - i1), ((i0 ** i1) + (-i2)),'
                          ' (i0 % Constant{3})}(x, y, z), '
                          '*1::1, *1::2, *1::3, *1::4, *1::5, *1::6, *1::7]')