diff --git a/bench/cec2020/benchFunctions.go b/bench/cec2020/benchFunctions.go
index 4c45833..783e447 100644
--- a/bench/cec2020/benchFunctions.go
+++ b/bench/cec2020/benchFunctions.go
@@ -3,6 +3,8 @@
 
 package cec2020
 
+import "math"
+
 // void sphere_func (double *, double *, int , double *,double *, int, int); // Sphere
 // void ellips_func(double *, double *, int , double *,double *, int, int); // Ellipsoidal
 // void bent_cigar_func(double *, double *, int , double *,double *, int, int); // Discus
@@ -30,7 +32,15 @@ package cec2020
 // void dixon_price_func(double *, double *, int , double *,double *, int, int); // Dixon and Price
 
 // BentCigar is the "Bent Cigar Function" of CEC2020.
-func BentCigar(x []float64) float64 { return 0 }
+func BentCigar(x []float64) float64 {
+	var sum float64
+
+	for i := 1; i < len(x); i++ {
+		sum += math.Pow(x[i], 2)
+	}
+
+	return (1000000 * sum) + math.Pow(x[0], 2)
+}
 
 // Schwefel is the "Shifted and Rotated Schwefel's Function" of CEC2020.
 func Schwefel(x []float64) float64 { return 0 }