allow for tuples

src/solutions/ode_solutions.jl

@@ -27,7 +27,13 @@ function build_solution(
     N = length((size(prob.u0)..., length(u)))
   end
 
-  if has_analytic(prob.f)
+  if typeof(prob.f) <: Tuple
+    f = prob.f[1]
+  else
+    f = prob.f
+  end
+
+  if has_analytic(f)
     u_analytic = Vector{typeof(prob.u0)}(0)
     errors = Dict{Symbol,eltype(prob.u0)}()
     sol = ODESolution{T,N,typeof(u),typeof(u_analytic),typeof(errors),typeof(t),typeof(k),
@@ -45,9 +51,16 @@ function build_solution(
 end
 
 function calculate_solution_errors!(sol::AbstractODESolution;fill_uanalytic=true,timeseries_errors=true,dense_errors=true)
+
+  if typeof(sol.prob.f) <: Tuple
+    f = sol.prob.f[1]
+  else
+    f = sol.prob.f
+  end
+
   if fill_uanalytic
     for i in 1:size(sol.u,1)
-      push!(sol.u_analytic,sol.prob.f(Val{:analytic},sol.t[i],sol.prob.u0))
+      push!(sol.u_analytic,f(Val{:analytic},sol.t[i],sol.prob.u0))
     end
   end
 
@@ -61,7 +74,7 @@ function calculate_solution_errors!(sol::AbstractODESolution;fill_uanalytic=true
       if sol.dense && dense_errors
         densetimes = collect(linspace(sol.t[1],sol.t[end],100))
         interp_u = sol(densetimes)
-        interp_analytic = [sol.prob.f(Val{:analytic},t,sol.u[1]) for t in densetimes]
+        interp_analytic = [f(Val{:analytic},t,sol.u[1]) for t in densetimes]
         sol.errors[:L∞] = maximum(vecvecapply((x)->abs.(x),interp_u-interp_analytic))
         sol.errors[:L2] = sqrt(recursive_mean(vecvecapply((x)->float.(x).^2,interp_u-interp_analytic)))
       end

src/solutions/rode_solutions.jl

@@ -29,7 +29,13 @@ function build_solution(
     N = length((size(prob.u0)..., length(u)))
   end
 
-  if has_analytic(prob.f)
+  if typeof(prob.f) <: Tuple
+    f = prob.f[1]
+  else
+    f = prob.f
+  end
+
+  if has_analytic(f)
     u_analytic = Vector{typeof(prob.u0)}(0)
     errors = Dict{Symbol,eltype(prob.u0)}()
     sol = RODESolution{T,N,typeof(u),typeof(u_analytic),typeof(errors),typeof(t),typeof(W),
@@ -49,9 +55,16 @@ function build_solution(
 end
 
 function calculate_solution_errors!(sol::AbstractRODESolution;fill_uanalytic=true,timeseries_errors=true,dense_errors=true)
+
+  if typeof(sol.prob.f) <: Tuple
+    f = sol.prob.f[1]
+  else
+    f = sol.prob.f
+  end
+
   if fill_uanalytic
     for i in 1:size(sol.u,1)
-      push!(sol.u_analytic,sol.prob.f(Val{:analytic},sol.t[i],sol.prob.u0,sol.W[i]))
+      push!(sol.u_analytic,f(Val{:analytic},sol.t[i],sol.prob.u0,sol.W[i]))
     end
   end