From 93d08a2298a4ea97fe54148c97f670a6c56d7ede Mon Sep 17 00:00:00 2001
From: Ian Bell <ian.bell@nist.gov>
Date: Sat, 21 May 2022 18:32:04 -0400
Subject: [PATCH] Fix for multicomplex

---
 include/teqp/models/multifluid_reducing.hpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/teqp/models/multifluid_reducing.hpp b/include/teqp/models/multifluid_reducing.hpp
index 01c9d95..f294b7c 100644
--- a/include/teqp/models/multifluid_reducing.hpp
+++ b/include/teqp/models/multifluid_reducing.hpp
@@ -240,7 +240,7 @@ namespace teqp {
             for (auto i = 0; i < N; ++i) {
                 for (auto j = 0; j < N; ++j) {
                     auto contrib = z[i] * z[j] * (phi(i, j) + z[j] * lambda(i, j)) * Yij(i, j);
-                    sum += contrib;
+                    sum = sum + contrib;
                 }
             }
             return sum;
-- 
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