Add @inline to checks and goal functions; Update test required

src/solvers/dgsem_tree/subcell_limiters_2d.jl

@@ -686,28 +686,28 @@ end
 end
 
 # Initial checks
-function initial_check_entropy_spec(bound, goal, newton_abstol)
+@inline function initial_check_entropy_spec(bound, goal, newton_abstol)
     goal <= max(newton_abstol, abs(bound) * newton_abstol)
 end
 
-function initial_check_entropy_math(bound, goal, newton_abstol)
+@inline function initial_check_entropy_math(bound, goal, newton_abstol)
     goal >= -max(newton_abstol, abs(bound) * newton_abstol)
 end
 
-initial_check_nonnegative(bound, goal, newton_abstol) = goal <= 0
+@inline initial_check_nonnegative(bound, goal, newton_abstol) = goal <= 0
 
 # Goal and d(Goal)d(u) function
-goal_function(variable, bound, u, equations) = bound - variable(u, equations)
-function dgoal_function(variable, u, dt, antidiffusive_flux, equations)
+@inline goal_function(variable, bound, u, equations) = bound - variable(u, equations)
+@inline function dgoal_function(variable, u, dt, antidiffusive_flux, equations)
     -dot(variable(u, equations, True()), dt * antidiffusive_flux)
 end
 
 # Final check
-function final_check_standard(bound, goal, newton_abstol)
+@inline function final_check_standard(bound, goal, newton_abstol)
     abs(goal) < max(newton_abstol, abs(bound) * newton_abstol)
 end
 
-function final_check_nonnegative(bound, goal, newton_abstol)
+@inline function final_check_nonnegative(bound, goal, newton_abstol)
     (goal <= eps()) && (goal > -max(newton_abstol, abs(bound) * newton_abstol))
 end