From fb009401815fecb8a589db3524f4175ccb42723e Mon Sep 17 00:00:00 2001
From: jbytecode <mhsatman@gmail.com>
Date: Fri, 8 Nov 2024 13:14:15 +0300
Subject: [PATCH] (#63) use NLconstraint for the constraints with abs

---
 CHANGELOG.md     | 1 +
 src/bestworst.jl | 4 ++--
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index cc918d7..068b16a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,7 @@
 ### 0.7.21 (Upcoming release)
 
 - Update documentation
+- Initial implementation of the Best-Worst method.
 
 ### 0.7.20 
 
diff --git a/src/bestworst.jl b/src/bestworst.jl
index 3c1a46c..d5dfb4d 100644
--- a/src/bestworst.jl
+++ b/src/bestworst.jl
@@ -88,11 +88,11 @@ function bestworst(pref_to_best::Vector{Int}, pref_to_worst::Vector{Int})::BestW
     worstindices = indices[indices.!=worst_index]
 
     for i in bestindices
-        @constraint(model, abs(w[best_index] / w[i] - pref_to_best[i]) <= ε)
+        @NLconstraint(model, abs(w[best_index] / w[i] - pref_to_best[i]) <= ε)
     end
 
     for i in worstindices
-        @constraint(model, abs(w[i] / w[worst_index] - pref_to_worst[i]) <= ε)
+        @NLconstraint(model, abs(w[i] / w[worst_index] - pref_to_worst[i]) <= ε)
     end
 
     @constraint(model, sum(w) == 1)