no more warning

Author: vpuri3

src/SciMLOperators.jl

@@ -21,7 +21,7 @@ import SparseArrays: sparse, issparse
 """
 $(TYPEDEF)
 
-## Interface
+# Interface
 
 An `L::AbstractSciMLOperator` can be called like a function. This behaves
 like multiplication by the linear operator represented by the
@@ -30,10 +30,19 @@ like multiplication by the linear operator represented by the
 - `L(du, u, p, t)` for in-place operator evaluation
 - `du = L(u, p, t)` for out-of-place operator evaluation
 
-If the operator is not a constant, update it with `(u, p, t)`.
-A mutating form, i.e. `update_coefficients!(L, u, p, t)` that changes the
-internal coefficients, and an out-of-place form
-`L_new = update_coefficients(L, u, p, t)`.
+Operator evaluation methods update its coefficients with `(u, p, t)`
+information using the `update_coefficients(!)` method. The methods
+are exported and can be called as follows:
+
+- `update_coefficients!(L, u, p, t)` for out-of-place operator update
+- `L = update_coefficients(L, u, p, t)` for in-place operator update
+
+SciMLOperators also overloads `Base.*`, `LinearAlgebra.mul!`,
+`LinearAlgebra.ldiv!` for operator evaluation without updating operator state.
+An `AbstractSciMLOperator` behaves like a matrix in these methods.
+Allocation-free methods, suffixed with a `!` often need cache arrays.
+To precache an `AbstractSciMLOperator`, call the function
+`L = cache_operator(L, input_vector)`.
 """
 abstract type AbstractSciMLOperator{T} end
 

src/interface.jl

@@ -3,16 +3,6 @@
 # Operator interface
 ###
 
-"""
-Function call and multiplication:
-    - L(du, u, p, t) for in-place operator evaluation,
-    - du = L(u, p, t) for out-of-place operator evaluation
-
-If the operator is not a constant, update it with (u,p,t). A mutating form, i.e.
-update_coefficients!(A,u,p,t) that changes the internal coefficients, and a
-out-of-place form B = update_coefficients(A,u,p,t).
-
-"""
 function (::AbstractSciMLOperator) end
 
 ###