Expand Enzyme extension comment

TuringLang · Sep 12, 2024 · ed1776e · ed1776e
1 parent 78d09f5
commit ed1776e
Showing 1 changed file with 4 additions and 2 deletions.
diff --git a/ext/DynamicPPLEnzymeCoreExt.jl b/ext/DynamicPPLEnzymeCoreExt.jl
@@ -10,7 +10,9 @@ end
 
 @inline EnzymeCore.EnzymeRules.inactive_type(::Type{<:DynamicPPL.SamplingContext}) = true
 
-# Mark istrans as having 0 derivative
-@inline EnzymeCore.EnzymeRules.inactive_noinl(::typeof(DynamicPPL.istrans), args...) = nothing
+# Mark istrans as having 0 derivative. The `nothing` return value is not significant, Enzyme
+# only checks whether such a method exists, and never runs it.
+@inline EnzymeCore.EnzymeRules.inactive_noinl(::typeof(DynamicPPL.istrans), args...) =
+    nothing
 
 end