Mercurial > repos > public > sbplib_julia

comparison ext/DiffinitiveSparseArrayKitExt.jl @ 2057:8a2a0d678d6f feature/lazy_tensors/pretty_printing

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Merge default
author Jonatan Werpers <jonatan@werpers.com>
date Tue, 10 Feb 2026 22:41:19 +0100
parents 471a948cd2b2
children
comparison
equal deleted inserted replaced
1110:c0bff9f6e0fb 2057:8a2a0d678d6f
1 module DiffinitiveSparseArrayKitExt
2
3 using Diffinitive
4 using Diffinitive.LazyTensors
5
6 using SparseArrayKit
7 using Tokens
8
9 """
10 SparseArray(t::LazyTensor)
11
12 The sparse tensor representation of `t` with range dimensions to the left and
13 domain dimensions to the right. If `L` is a `LazyTensor` with range and
14 domain dimension 2 and `v` a 2-tensor, then `A = SparseArray(t)` is
15 constructed so that `∑ₖ∑ₗA[i,j,k,l]*v[k,l] == L*v`.
16 """
17 function SparseArrayKit.SparseArray(t::LazyTensor)
18 v = ArrayToken(:v, domain_size(t)...)
19 return Tokens._to_tensor(t*v, range_size(t), domain_size(t))
20 end
21
22 end