blob: 49db88ee3cc72ccba016bd8d9cf3867bb4b8f23d [file] [log] [blame]
.. default-domain:: cpp
.. highlight:: sh
The ``pw_varint`` module provides functions for encoding and decoding variable
length integers, or varints. For smaller values, varints require less memory
than a fixed-size encoding. For example, a 32-bit (4-byte) integer requires 1--5
bytes when varint-encoded.
`Protocol Buffers <>`_
use a variable-length encoding for integers.
* C
* C++11 (with :doc:`../pw_polyfill/docs`)
.. cpp:function:: size_t EncodedSize(uint64_t integer)
Returns the size of an integer when encoded as a varint. Works on both signed
and unsigned integers.
.. cpp:function:: size_t ZigZagEncodedSize(int64_t integer)
Returns the size of a signed integer when ZigZag encoded as a varint.
* ``pw_span``