amaranth/docs/stdlib.rst
2024-06-14 18:51:38 +00:00

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Standard library
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The :mod:`amaranth.lib` module, also known as the standard library, provides modules that falls into one of the three categories:
1. Modules that will used by essentially all idiomatic Amaranth code, or which are necessary for interoperability. This includes :mod:`amaranth.lib.enum` (enumerations), :mod:`amaranth.lib.data` (data structures), :mod:`amaranth.lib.wiring` (interfaces and components), :mod:`amaranth.lib.meta` (interface metadata), and :mod:`amaranth.lib.stream` (data streams).
2. Modules that abstract common functionality whose implementation differs between hardware platforms. This includes :mod:`amaranth.lib.memory` and :mod:`amaranth.lib.cdc`.
3. Modules that have essentially one correct implementation and are of broad utility in digital designs. This includes :mod:`amaranth.lib.coding`, :mod:`amaranth.lib.fifo`, and :mod:`amaranth.lib.crc`.
As part of the Amaranth backwards compatibility guarantee, any behaviors described in these documents will not change from a version to another without at least one version including a warning about the impending change. Any nontrivial change to these behaviors must also go through the public review as a part of the `Amaranth Request for Comments process <https://amaranth-lang.org/rfcs/>`_.
The Amaranth standard library is separate from the Amaranth language: everything provided in it could have been implemented in a third-party library.
.. toctree::
:maxdepth: 2
stdlib/enum
stdlib/data
stdlib/wiring
stdlib/meta
stdlib/stream
stdlib/memory
stdlib/io
stdlib/cdc
stdlib/coding
stdlib/fifo
stdlib/crc