mlx.core.jvp

jvp(fun: callable, primals: List[array], tangents: List[array]) → Tuple[List[array], List[array]]

Compute the Jacobian-vector product.

This computes the product of the Jacobian of a function fun evaluated at primals with the tangents.

Parameters:

• fun (callable) – A function which takes a variable number of array and returns a single array or list of array.

• primals (list(array)) – A list of array at which to evaluate the Jacobian.

• tangents (list(array)) – A list of array which are the “vector” in the Jacobian-vector product. The tangents should be the same in number, shape, and type as the inputs of fun (i.e. the primals).

Returns:

A list of the Jacobian-vector products which is the same in number, shape, and type of the inputs to fun.

Return type:

list(array)