EnzymeAD/Enzyme.jl

FixedpointNumbers.jl support

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#109 opened on Jul 28, 2021

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help wanted

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Description

using Enzyme
using FixedPointNumbers

f(x) = x^2
julia> autodiff(f, Active, Active(FixedPointNumbers.Q4f3(0.5)))
(0.0Q4f3,)

julia> FixedPointNumbers.Q4f3(1.0)
1.0Q4f3

julia> autodiff(f, Active, Active(0.5))
(1.0,)

x-ref: https://github.com/wsmoses/Enzyme/issues/158#issuecomment-797638987

Contributor guide

Research direction
Study how Enzyme handles custom number types by examining existing support for other fixed point or user defined types in the codebase. Then extend the relevant functions to handle FixedPointNumbers types like Q4f3.
Tech stack
None
Domain
backend
Issue type
Feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
Half day
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
Julia
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
40