fix logistic map

Author: Datseris

Project.toml

@@ -1,7 +1,7 @@
 name = "PredefinedDynamicalSystems"
 uuid = "31e2f376-db9e-427a-b76e-a14f56347a14"
 repo = "https://github.com/JuliaDynamics/PredefinedDynamicalSystems.jl.git"
-version = "1"
+version = "1.0.1"
 
 [deps]
 DynamicalSystemsBase = "6e36e845-645a-534a-86f2-f5d4aa5a06b4"

src/discrete_famous_systems.jl

@@ -226,10 +226,10 @@ function's documentation string.
 [2] : M. J. Feigenbaum, J. Stat. Phys. **19**, pp 25 (1978)
 """
 function logistic(x0=0.4; r = 4.0)
-    return DDS(logistic_rule, x0, [r], logistic_jacob)
+    return DDS(logistic_rule, SVector(x0), [r])
 end
-logistic_rule(x, p, n) = p[1]*x*(1-x)
-logistic_jacob(x, p, n) = p[1]*(1-2x)
+logistic_rule(x, p, n) = @inbounds SVector(p[1]*x[1]*(1 - x[1]))
+logistic_jacob(x, p, n) = @inbounds SMatrix{1,1}(p[1]*(1 - 2x[1]))
 
 """
     pomaeu_manneville(u0 = 0.2; z = 2.5)