OOP NSA resize: handle Ref-wrapped W; Runic literal fmt

Author: Your Name

lib/OrdinaryDiffEqNonlinearSolve/src/newton.jl

@@ -718,13 +718,25 @@ function Base.resize!(nlcache::NLNewtonCache, ::AbstractNLSolver, integrator, i:
     return nothing
 end
 
+function _resize_nlsolvealg_W!(nlcache, integrator, i)
+    W = nlcache.W[]
+    W isa StaticWOperator && return nothing
+    if nlcache.J !== nothing && ArrayInterface.can_setindex(nlcache.J)
+        nlcache.J = similar(nlcache.J, i, i)
+    end
+    nlcache.W[] = WOperator{SciMLBase.isinplace(integrator.sol.prob)}(
+        integrator.f.mass_matrix, integrator.dt, nlcache.J, integrator.u
+    )
+    return nothing
+end
+
 function Base.resize!(nlcache::NonlinearSolveCache, ::AbstractNLSolver, integrator, i::Int)
     nlcache.ustep === nothing || resize!(nlcache.ustep, i)
     nlcache.k === nothing || resize!(nlcache.k, i)
     nlcache.atmp === nothing || resize!(nlcache.atmp, i)
     nlcache.du1 === nothing || resize!(nlcache.du1, i)
     nlcache.jac_config === nothing || resize_jac_config!(nlcache, integrator)
-    nlcache.W === nothing || resize_J_W!(nlcache, integrator, i)
+    nlcache.W === nothing || _resize_nlsolvealg_W!(nlcache, integrator, i)
     nlcache.W_γdt = zero(nlcache.W_γdt)
     nlcache.new_W = true
     return nothing

lib/OrdinaryDiffEqNonlinearSolve/test/linear_nonlinear_tests.jl

@@ -111,7 +111,7 @@ let
         TRBDF2(
             nlsolve = NonlinearSolveAlg(NewtonRaphson(; autodiff = AutoForwardDiff())),
             concrete_jac = true
-        ); reltol = 1e-8, abstol = 1e-10
+        ); reltol = 1.0e-8, abstol = 1.0e-10
     )
     @test SciMLBase.successful_retcode(sol.retcode)
     @test sol.stats.njacs > 0
@@ -129,7 +129,7 @@ let
         TRBDF2(
             nlsolve = NonlinearSolveAlg(NewtonRaphson(; autodiff = AutoForwardDiff())),
             concrete_jac = true
-        ); reltol = 1e-8, abstol = 1e-10
+        ); reltol = 1.0e-8, abstol = 1.0e-10
     )
     @test SciMLBase.successful_retcode(sol.retcode)
     @test sol.stats.njacs > 0