From 29b5dba22c87dd12d4265506e52593b9b026c997 Mon Sep 17 00:00:00 2001
From: Bimal Gaudel <bimalgaudel@gmail.com>
Date: Wed, 22 Nov 2023 22:04:59 -0500
Subject: [PATCH] Add equality comparison for SparseShape<T>.

---
 src/TiledArray/sparse_shape.h | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/src/TiledArray/sparse_shape.h b/src/TiledArray/sparse_shape.h
index bf51487922..271857a72c 100644
--- a/src/TiledArray/sparse_shape.h
+++ b/src/TiledArray/sparse_shape.h
@@ -1742,6 +1742,17 @@ bool is_replicated(World& world, const SparseShape<T>& shape) {
   return result;
 }
 
+template <typename T>
+constexpr inline bool operator==(const SparseShape<T>& a,
+                                 const SparseShape<T>& b) {
+  return true;
+}
+template <typename T>
+constexpr inline bool operator!=(const SparseShape<T>& a,
+                                 const SparseShape<T>& b) {
+  return !(a == b);
+}
+
 #ifndef TILEDARRAY_HEADER_ONLY
 
 extern template class SparseShape<float>;