Merge pull request #373 from SciML/mtkitize

fix modelingtoolkize to only return the system

Author: ChrisRackauckas

src/systems/diffeqs/modelingtoolkitize.jl

@@ -24,5 +24,5 @@ function modelingtoolkitize(prob::DiffEqBase.ODEProblem)
     eqs = vcat([rhs[i] ~ lhs[i] for i in eachindex(prob.u0)]...)
     de = ODESystem(eqs,t,vars,params)
 
-    de, vars, params
+    de
 end

test/odesystem.jl

@@ -178,8 +178,8 @@ function lotka(u,p,t)
 end
 
 prob = ODEProblem(ODEFunction{false}(lotka),[1.0,1.0],(0.0,1.0),[1.5,1.0,3.0,1.0])
-de, vars, params = modelingtoolkitize(prob)
-ODEFunction(de, vars, params)(similar(prob.u0), prob.u0, prob.p, 0.1)
+de = modelingtoolkitize(prob)
+ODEFunction(de)(similar(prob.u0), prob.u0, prob.p, 0.1)
 
 function lotka(du,u,p,t)
   x = u[1]
@@ -190,5 +190,5 @@ end
 
 prob = ODEProblem(lotka,[1.0,1.0],(0.0,1.0),[1.5,1.0,3.0,1.0])
 
-de, vars, params = modelingtoolkitize(prob)
-ODEFunction(de, vars, params)(similar(prob.u0), prob.u0, prob.p, 0.1)
+de = modelingtoolkitize(prob)
+ODEFunction(de)(similar(prob.u0), prob.u0, prob.p, 0.1)