def sum_to(x, shape):
if x.shape == shape:
return as_variable(x)
return SumTo(shape)(x)
def broadcast_to(x, shape):
if x.shape == shape:
return as_variable(x)
return BroadcastTo(shape)(x)
def cos(x):
x = as_variable(x)
return Cos()(x)
def tanh(x):
x = as_variable(x)
return Tanh()(x)
def sin(x):
x = as_variable(x)
return Sin()(x)