From 2efbebde42e96ea6253acec60d750b0d120cd19c Mon Sep 17 00:00:00 2001
From: mtfishman <mfishman@flatironinstitute.org>
Date: Sun, 12 Oct 2025 00:25:50 -0400
Subject: [PATCH] [NDTensors] Define denseblocks on Dense

---
 NDTensors/Project.toml             | 2 +-
 NDTensors/src/dense/densetensor.jl | 2 ++
 NDTensors/test/test_dense.jl       | 4 ++++
 3 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/NDTensors/Project.toml b/NDTensors/Project.toml
index e5edea4365..138c276bfc 100644
--- a/NDTensors/Project.toml
+++ b/NDTensors/Project.toml
@@ -1,7 +1,7 @@
 name = "NDTensors"
 uuid = "23ae76d9-e61a-49c4-8f12-3f1a16adf9cf"
 authors = ["Matthew Fishman <mfishman@flatironinstitute.org>"]
-version = "0.4.14"
+version = "0.4.15"
 
 [deps]
 Accessors = "7d9f7c33-5ae7-4f3b-8dc6-eff91059b697"
diff --git a/NDTensors/src/dense/densetensor.jl b/NDTensors/src/dense/densetensor.jl
index 17aabaecc7..5cb547b4c3 100644
--- a/NDTensors/src/dense/densetensor.jl
+++ b/NDTensors/src/dense/densetensor.jl
@@ -75,6 +75,8 @@ end
 # Useful for using Base Array functions
 array(T::DenseTensor) = convert(Array, T)
 
+denseblocks(T::DenseTensor) = T
+
 function diagview(T::DenseTensor)
     return diagview(array(T))
 end
diff --git a/NDTensors/test/test_dense.jl b/NDTensors/test/test_dense.jl
index c17b816f35..4f62abda43 100644
--- a/NDTensors/test/test_dense.jl
+++ b/NDTensors/test/test_dense.jl
@@ -1,5 +1,6 @@
 @eval module $(gensym())
 using NDTensors
+using NDTensors: denseblocks
 using NDTensors.MetalExtensions: mtl
 using Test: @testset, @test, @test_throws, @test_broken
 using GPUArraysCore: @allowscalar
@@ -30,6 +31,9 @@ NDTensors.dim(i::MyInd) = i.dim
             @test dims(A[2:3, 2:end]) == (2, 3)
             @test dims(A[3, 2:end]) == (3,)
 
+            @test dense(A) ≡ A
+            @test denseblocks(A) ≡ A
+
             randn!(A)
 
             @test ndims(A) == 2