From 2bdc778ab6785b84cd42bb3f3be062d715f51009 Mon Sep 17 00:00:00 2001
From: Chip Hogg <chogg@aurora.tech>
Date: Thu, 12 May 2022 18:19:20 +0000
Subject: [PATCH] Constrain template

---
 src/core/include/units/quantity_cast.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/core/include/units/quantity_cast.h b/src/core/include/units/quantity_cast.h
index 8c40a87f..fdb90aef 100644
--- a/src/core/include/units/quantity_cast.h
+++ b/src/core/include/units/quantity_cast.h
@@ -61,8 +61,8 @@ inline constexpr Magnitude auto quantity_magnitude<quantity<D, U, Rep>> = [] {
   }
 }();
 
-template<typename T>
-inline constexpr ratio quantity_ratio = as_ratio(quantity_magnitude<T>);
+template<Quantity Q>
+inline constexpr ratio quantity_ratio = as_ratio(quantity_magnitude<Q>);
 
 template<typename QFrom, typename QTo>
 inline constexpr Magnitude auto cast_magnitude = [] {