fixes typo in getetdcoeffs function arguments

src/timesteppers.jl

@@ -12,7 +12,7 @@ end
 
 Step forward `prob` for `nsteps`.
 """
-function stepforward!(prob::Problem, nsteps::Int) 
+function stepforward!(prob::Problem, nsteps::Int)
   for step = 1:nsteps
     stepforward!(prob)
   end
@@ -46,12 +46,12 @@ isexplicit(stepper) = any(Symbol(stepper) .== fullyexplicitsteppers)
 
 """
     TimeStepper(stepper, eq, dt=nothing)
-    
+
 Generalized timestepper constructor. If `stepper` is explicit, `dt` is not used.
 """
 function TimeStepper(stepper, eq, dt=nothing)
   fullsteppername = Symbol(stepper, :TimeStepper)
-  if isexplicit(stepper) 
+  if isexplicit(stepper)
     return eval(Expr(:call, fullsteppername, eq))
   else
     return eval(Expr(:call, fullsteppername, eq, dt))
@@ -106,7 +106,7 @@ ForwardEulerTimeStepper(eq::Equation) = ForwardEulerTimeStepper(superzeros(eq.T,
 Construct a forward Euler timestepper with spectral filtering.
 """
 struct FilteredForwardEulerTimeStepper{T,Tf} <: AbstractTimeStepper{T}
-  N::T       
+  N::T
   filter::Tf
 end
 
@@ -137,7 +137,7 @@ const third = 1/3
 Construct a 4th-order Runge-Kutta time stepper.
 """
 struct RK4TimeStepper{T} <: AbstractTimeStepper{T}
-  sol₁::T 
+  sol₁::T
   RHS₁::T
   RHS₂::T
   RHS₃::T
@@ -150,7 +150,7 @@ end
 Construct a 4th-order Runge-Kutta time stepper with spectral filtering for the equation `eq`.
 """
 struct FilteredRK4TimeStepper{T,Tf} <: AbstractTimeStepper{T}
-  sol₁::T 
+  sol₁::T
   RHS₁::T
   RHS₂::T
   RHS₃::T
@@ -229,15 +229,15 @@ Construct a 4th-order exponential-time-differencing Runge-Kutta time stepper. Th
 """
 struct ETDRK4TimeStepper{T,TL} <: AbstractTimeStepper{T}
   # ETDRK4 coefficents
-  ζ::TL 
+  ζ::TL
   α::TL
   β::TL
   Γ::TL
   expLdt::TL
   expLdt2::TL
   sol₁::T
   sol₂::T
-  N₁::T 
+  N₁::T
   N₂::T
   N₃::T
   N₄::T
@@ -250,15 +250,15 @@ Construct a 4th-order exponential-time-differencing Runge-Kutta time stepper wit
 """
 struct FilteredETDRK4TimeStepper{T,TL,Tf} <: AbstractTimeStepper{T}
   # ETDRK4 coefficents:
-  ζ::TL   
+  ζ::TL
   α::TL
   β::TL
   Γ::TL
   expLdt::TL
   expLdt2::TL
-  sol₁::T 
+  sol₁::T
   sol₂::T
-  N₁::T 
+  N₁::T
   N₂::T
   N₃::T
   N₄::T
@@ -422,14 +422,14 @@ function getexpLs(dt, eq)
   expLdt, expLdt2
 end
 
-function getetdcoeffs(dt, L<:AbstractArray{T}; kwargs...) where T<:AbstractArray 
+function getetdcoeffs(dt, L::AbstractArray{T}; kwargs...) where T<:AbstractArray
   ζαβΓ = [ getetdcoeffs(dt, Li) for Li in L ]
   ζ = map(x->x[1], ζαβΓ)
   α = map(x->x[2], ζαβΓ)
   β = map(x->x[3], ζαβΓ)
   Γ = map(x->x[4], ζαβΓ)
   ζ, α, β, Γ
-end 
+end
 
 """
     getetdcoeffs(dt, L; ncirc=32, rcirc=1)
@@ -465,6 +465,6 @@ function getetdcoeffs(dt, L; ncirc=32, rcirc=1)
     β = real.(β)
     Γ = real.(Γ)
   end
- 
+
   ζ, α, β, Γ
 end