value_and_grad#

ivy.value_and_grad(func)[source]#

Create a function that evaluates both func and the gradient of func.

Parameters:: func (Callable) – Function for which we compute the gradients of the output with respect to xs input.
Return type:: Callable
Returns:: ret – A function that returns both func and the gradient of func.

Examples

With ivy.Array input:

>>> x = ivy.array([[4.6, 2.1, 5], [2.8, 1.3, 6.2]])
>>> func = lambda x: ivy.mean(ivy.square(x))
>>> grad_fn = ivy.value_and_grad(func)
>>> value_grad = grad_fn(x)
>>> print(value_grad)
(ivy.array(16.42333412), ivy.array([[1.5333333 , 0.69999999, 1.66666675],
       [0.93333334, 0.43333334, 2.0666666 ]]))