Sieve

sieve(din, *, key) → b'din[key]'

Outputs a slice of the din input interface. Can be instantiated with the slicing statement: din[key].

Parameters

key – A single key or a sequence of keys with which to slice the input interface.

Returns

A sliced interface

Which keys are exactly supported depends on the type of the din input interface, so checkout the __getitem__ method of the specific type. If for an example we have an interface of the type Uint[8]

din = Intf(Uint[8])

we could slice it using Python index operator to obtain a high nibble:

>>> din[4:]
Intf(Uint[4])

which outputs an interface of the type Uint[4]. The same would be achieved if the sieve gear were instantiated explicitly:

>>> sieve(din, key=slice(4, None, None))
Intf(Uint[4])