From 600f05ae2c4dc1ec2b32282918ec014204f41e75 Mon Sep 17 00:00:00 2001
From: Frank Dellaert <dellaert@gmail.com>
Date: Sat, 22 Jan 2022 11:08:46 -0500
Subject: [PATCH] exact equality

---
 gtsam/linear/GaussianFactorGraph.h | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/gtsam/linear/GaussianFactorGraph.h b/gtsam/linear/GaussianFactorGraph.h
index f39222122..0d5057aa8 100644
--- a/gtsam/linear/GaussianFactorGraph.h
+++ b/gtsam/linear/GaussianFactorGraph.h
@@ -99,6 +99,12 @@ namespace gtsam {
 
     /// @}
 
+    /// Check exact equality.
+    friend bool operator==(const GaussianFactorGraph& lhs,
+                            const GaussianFactorGraph& rhs) {
+      return lhs.isEqual(rhs);
+    }
+
     /** Add a factor by value - makes a copy */
     void add(const GaussianFactor& factor) { push_back(factor.clone()); }
 
@@ -414,7 +420,7 @@ namespace gtsam {
    */
   GTSAM_EXPORT bool hasConstraints(const GaussianFactorGraph& factors);
 
-  /****** Linear Algebra Opeations ******/
+  /****** Linear Algebra Operations ******/
 
   ///* matrix-vector operations */
   //GTSAM_EXPORT void residual(const GaussianFactorGraph& fg, const VectorValues &x, VectorValues &r);