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diff ext/SbplibSparseArraysExt.jl @ 1699:3e9c3986930d feature/lazy_tensors/sparse_conversions

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Add extensions for SparseArrays and SparseArrayKit that allow conversion of a LazyTensor
author Jonatan Werpers <jonatan@werpers.com>
date Mon, 02 Sep 2024 15:35:54 +0200
parents
children 8787b2f9f5f8
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ext/SbplibSparseArraysExt.jl	Mon Sep 02 15:35:54 2024 +0200
@@ -0,0 +1,17 @@
+module SbplibSparseArraysExt
+
+using Sbplib
+using Sbplib.LazyTensors
+
+using SparseArrays
+using Tokens
+
+function SparseArrays.sparse(t::LazyTensor)
+    v = ArrayToken(:v, prod(domain_size(t)))
+
+    v̄ = reshape(v,domain_size(t)...)
+    tv = reshape(t*v̄, :)
+    return Tokens._to_matrix(tv, prod(range_size(t)), prod(domain_size(t)))
+end
+
+end