From acbcece3d79ce26f81aa0338016c43745473f256 Mon Sep 17 00:00:00 2001
From: Paul Brehmer <paulbrehmer8@googlemail.com>
Date: Tue, 21 Jan 2025 13:55:08 +0100
Subject: [PATCH] Fix cost_function argument order

---
 src/algorithms/optimization/peps_optimization.jl | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/algorithms/optimization/peps_optimization.jl b/src/algorithms/optimization/peps_optimization.jl
index 74ffbfef..d76bd71f 100644
--- a/src/algorithms/optimization/peps_optimization.jl
+++ b/src/algorithms/optimization/peps_optimization.jl
@@ -141,7 +141,7 @@ function cost_and_grad!(cache::PEPSCostFunctionCache{T}, peps_vec::Vector{T}) wh
             cache.alg.boundary_alg;
             alg_rrule=cache.alg.gradient_alg,
         )
-        cost = cost_function(ψ, cache.operator, env)
+        cost = cost_function(ψ, env, cache.operator)
         ignore_derivatives() do # update cache
             update!(cache.env, env)
             cache.truncation_error = truncation_error