From 256d64a212c07813f4150721a0f8673056f6d404 Mon Sep 17 00:00:00 2001
From: Guillaume Dalle <22795598+gdalle@users.noreply.github.com>
Date: Wed, 13 Jul 2022 10:22:15 +0200
Subject: [PATCH] Fix type issue in FW by promoting to float

---
 src/frank_wolfe/differentiable_frank_wolfe.jl | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/frank_wolfe/differentiable_frank_wolfe.jl b/src/frank_wolfe/differentiable_frank_wolfe.jl
index 6978804..8aa24ac 100644
--- a/src/frank_wolfe/differentiable_frank_wolfe.jl
+++ b/src/frank_wolfe/differentiable_frank_wolfe.jl
@@ -93,7 +93,7 @@ function ChainRulesCore.rrule(
     fw_kwargs=(;),
     kwargs...,
 ) where {R1<:Real,R2<:Real}
-    R = promote_type(R1, R2)
+    R = promote_type(float(R1), float(R2))
     (; linear_solver) = dfw
 
     probadist = compute_probability_distribution(dfw, θ, x0; fw_kwargs=fw_kwargs)