Merge pull request #3 from Shreyas-Ekanathan/head

sync

Author: Shreyas-Ekanathan

lib/OrdinaryDiffEqBDF/Project.toml

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+name = "OrdinaryDiffEqBDF"
+uuid = "6ad6398a-0878-4a85-9266-38940aa047c8"
+authors = ["ParamThakkar123 <[email protected]>"]
+version = "1.0.0"
+
+[deps]
+OrdinaryDiffEq = "1dea7af3-3e70-54e6-95c3-0bf5283fa5ed"
+TruncatedStacktraces = "781d530d-4396-4725-bb49-402e4bee1e77"
+MuladdMacro = "46d2c3a1-f734-5fdb-9937-b9b9aeba4221"
+MacroTools = "1914dd2f-81c6-5fcd-8719-6d5c9610ff09"
+FastBroadcast = "7034ab61-46d4-4ed7-9d0f-46aef9175898"
+RecursiveArrayTools = "731186ca-8d62-57ce-b412-fbd966d074cd"
+LinearAlgebra = "37e2e46d-f89d-539d-b4ee-838fcccc9c8e"
+NLsolve = "2774e3e8-f4cf-5e23-947b-6d7e65073b56"
+ArrayInterface = "4fba245c-0d91-5ea0-9b3e-6abc04ee57a9"
+
+[extras]
+DiffEqDevTools = "f3b72e0c-5b89-59e1-b016-84e28bfd966d"
+Random = "9a3f8284-a2c9-5f02-9a11-845980a1fd5c"
+SafeTestsets = "1bc83da4-3b8d-516f-aca4-4fe02f6d838f"
+Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
+
+[compat]
+julia = "1.10"
+
+[targets]
+test = ["DiffEqDevTools", "Random", "SafeTestsets", "Test"]

lib/OrdinaryDiffEqBDF/src/OrdinaryDiffEqBDF.jl

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+module OrdinaryDiffEqBDF
+
+import OrdinaryDiffEq: alg_order, calculate_residuals!,
+                       initialize!, perform_step!, @unpack, unwrap_alg,
+                       calculate_residuals, alg_extrapolates,
+                       OrdinaryDiffEqAlgorithm,
+                       OrdinaryDiffEqMutableCache, OrdinaryDiffEqConstantCache,
+                       OrdinaryDiffEqNewtonAdaptiveAlgorithm,
+                       OrdinaryDiffEqNewtonAlgorithm,
+                       AbstractController, DEFAULT_PRECS,
+                       CompiledFloats, uses_uprev,
+                       NLNewton, alg_cache, _vec, _reshape, @cache,
+                       isfsal, full_cache, build_nlsolver,
+                       nlsolve!, nlsolvefail, isnewton,
+                       constvalue, _unwrap_val,
+                       DIRK, set_new_W!,
+                       du_alias_or_new, trivial_limiter!,
+                       ImplicitEulerConstantCache,
+                       ImplicitEulerCache, COEFFICIENT_MULTISTEP,
+                       markfirststage!, UJacobianWrapper, mul!,
+                       issplit, qsteady_min_default, qsteady_max_default,
+                       get_current_alg_order, get_current_adaptive_order,
+                       default_controller, stepsize_controller!, step_accept_controller!,
+                       step_reject_controller!, post_newton_controller!,
+                       u_modified!
+using TruncatedStacktraces, MuladdMacro, MacroTools, FastBroadcast, RecursiveArrayTools
+import StaticArrays: SArray, MVector, SVector, @SVector, StaticArray, MMatrix, SA
+using LinearAlgebra: I
+using ArrayInterface
+
+include("algorithms.jl")
+include("alg_utils.jl")
+include("bdf_utils.jl")
+include("bdf_caches.jl")
+include("controllers.jl")
+include("bdf_perform_step.jl")
+
+export ABDF2, QNDF1, QBDF1, QNDF2, QBDF2, QNDF, QBDF, FBDF,
+       SBDF2, SBDF3, SBDF4, MEBDF2, IMEXEuler, IMEXEulerARK
+
+end

lib/OrdinaryDiffEqBDF/src/alg_utils.jl

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+alg_extrapolates(alg::ABDF2) = true
+alg_extrapolates(alg::SBDF) = true
+alg_extrapolates(alg::MEBDF2) = true
+
+alg_order(alg::ABDF2) = 2
+alg_order(alg::SBDF) = alg.order
+alg_order(alg::QNDF1) = 1
+alg_order(alg::QNDF2) = 2
+alg_order(alg::QNDF) = 1 #dummy value
+alg_order(alg::MEBDF2) = 2
+alg_order(alg::FBDF) = 1 #dummy value
+
+issplit(alg::SBDF) = true
+
+qsteady_min_default(alg::FBDF) = 9 // 10
+
+qsteady_max_default(alg::QNDF) = 2 // 1
+qsteady_max_default(alg::QNDF2) = 2 // 1
+qsteady_max_default(alg::QNDF1) = 2 // 1
+qsteady_max_default(alg::FBDF) = 2 // 1
+
+get_current_alg_order(alg::QNDF, cache) = cache.order
+get_current_alg_order(alg::FBDF, cache) = cache.order
+
+get_current_adaptive_order(alg::QNDF, cache) = cache.order
+get_current_adaptive_order(alg::FBDF, cache) = cache.order