From 5c42ea28acfd28c4fd858d27b704959bf69f3b6e Mon Sep 17 00:00:00 2001
From: Charles Kawczynski <kawczynski.charles@gmail.com>
Date: Thu, 12 Sep 2024 15:39:23 -0400
Subject: [PATCH] Allow mixed types for Rosenbrock coeffs

---
 Project.toml              | 2 +-
 src/solvers/rosenbrock.jl | 5 ++---
 2 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/Project.toml b/Project.toml
index c1031a7d..d055127b 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,7 +1,7 @@
 name = "ClimaTimeSteppers"
 uuid = "595c0a79-7f3d-439a-bc5a-b232dc3bde79"
 authors = ["Climate Modeling Alliance"]
-version = "0.7.34"
+version = "0.7.35"
 
 [deps]
 ClimaComms = "3a4d1b5c-c61d-41fd-a00a-5873ba7a1b0d"
diff --git a/src/solvers/rosenbrock.jl b/src/solvers/rosenbrock.jl
index bb32f556..1a2a24d4 100644
--- a/src/solvers/rosenbrock.jl
+++ b/src/solvers/rosenbrock.jl
@@ -123,7 +123,6 @@ function step_u!(int, cache::RosenbrockCache{Nstages}) where {Nstages}
     tgrad! = isnothing(T_imp!) ? nothing : T_imp!.tgrad
 
     (; post_explicit!, post_implicit!, dss!) = int.sol.prob.f
-    tT = typeof(t)
 
     # TODO: This is only valid when Γ[i, i] is constant, otherwise we have to
     # move this in the for loop
@@ -142,8 +141,8 @@ function step_u!(int, cache::RosenbrockCache{Nstages}) where {Nstages}
         # Reset tendency
         fill!(fU, 0)
 
-        αi = sum(α[i, 1:(i - 1)]; init = zero(tT))::tT
-        γi = sum(Γ[i, 1:i]; init = zero(tT))::tT
+        αi = sum(α[i, 1:(i - 1)]; init = zero(eltype(α)))
+        γi = sum(Γ[i, 1:i]; init = zero(eltype(Γ)))
 
         U .= u
         for j in 1:(i - 1)