Matexpr.jl

Matexpr.jl is a small project for embedding matrix expressions before run time based on user delcared matadata.

The user-facing surface is:

• @matexpr: wraps a Julia function and compiles the final expression into ordinary Julia code.
• @declare: supplies @matexpr the necessary metadat (fixed dimensions and matrix structure) for inputs.

The Macro Documentation page lists the full supported syntax and examples for those two macros. The Student Writeup explains what what I learned along the way! Enjoy! :D

Minimal Example

using Matexpr

@eval @matexpr function dense_mv(A, x)
    @declare begin
        input(A, (2, 3), Dense())
        input(x, (3, 1), Dense())
    end
    A * x
end

dense_mv([1 2 3; 4 5 6], [10, 20, 30])

2-element Vector{Int64}:
 140
 320