cec2020: add Functions, FuncNames

bench/cec2020/vars.go

@@ -10,7 +10,34 @@ extern double *OShift,*M,*y,*z,*x_bound;
 extern int ini_flag,n_flag,func_flag,*SS;
 */
 
-var Functions = map[string]func([]float64) float64{}
+// Functions is a string-func map of function names and specific bench funcs
+// for easier iterable access.
+var Functions = map[string]func([]float64) float64{
+	"Bent Cigar":           BentCigar,
+	"Schwefel Modified":    Schwefel,
+	"Lunacek Bi-Rastrigin": LunacekBiRastrigin,
+	"Rosenbrock-Griewank":  RosenbrockGriewank,
+	"Hybrid1":              Hybrid1,
+	"Hybrid2":              Hybrid2,
+	"Hybrid3":              Hybrid3,
+	"Composition1":         Composition1,
+	"Composition2":         Composition2,
+	"Composition3":         Composition3,
+}
+
+// FuncNames represents a numbered list of function name.
+var FuncNames = map[int]string{
+	0: "Bent Cigar",
+	1: "Schwefel Modified",
+	2: "Lunacek Bi-Rastrigin",
+	3: "Rosenbrock-Griewank",
+	4: "Hybrid1",
+	5: "Hybrid2",
+	6: "Hybrid3",
+	7: "Composition1",
+	8: "Composition2",
+	9: "Composition3",
+}
 
 // SearchRange specifies the CEC2020 search range.
 var SearchRange = bench.NewfuncParams(searchRangeMin, searchRangeMax)