fix?

Author: YichengDWu

src/rules.jl

@@ -166,11 +166,16 @@ function apply!(o::Rprop, state, x, dx)
     ℓ, Γ = o.ell, o.gamma
     g, η = state
 
-    g, η = broadcast(g, η, dx) do g, η, dx
-        g * dx > 0 ? (g, min(η * ℓ[2], Γ[2])) : g * dx < 0 ? (zero(dx), max(η * ℓ[1], Γ[1])) : (g, η)
+    η = broadcast(g, η, dx) do g, η, dx
+        g * dx > 0 ? min(η * ℓ[2], Γ[2]) : g * dx < 0 ? max(η * ℓ[1], Γ[1]) : η
+    end
+
+    g = broadcast(g, dx) do g, dx
+        g * dx < 0 ? zero(dx) : dx
     end
 
     dx′ = @lazy η * sign(g)
+
     return (g, η), dx′
 end