From 9bfe75ebf642c616792aad1c71529fb88d65aa97 Mon Sep 17 00:00:00 2001
From: Mateusz Pusz <mateusz.pusz@gmail.com>
Date: Sat, 22 Oct 2022 21:05:14 +0200
Subject: [PATCH] feat: `harmonic_` concept enabled

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

diff --git a/src/core/include/units/quantity.h b/src/core/include/units/quantity.h
index afcb74de..f48c3d7f 100644
--- a/src/core/include/units/quantity.h
+++ b/src/core/include/units/quantity.h
@@ -64,8 +64,8 @@ concept safe_convertible_to_ =  // exposition only
 // QFrom ratio is an exact multiple of QTo
 template<typename QFrom, typename QTo>
 concept harmonic_ =  // exposition only
-  true;              // TODO fix it when magnitudes are ready
-// Quantity<QFrom> && Quantity<QTo> && is_integral(detail::quantity_magnitude<QFrom> / detail::quantity_magnitude<QTo>);
+  Quantity<QFrom> && Quantity<QTo> &&
+  is_integral(detail::get_canonical_unit(QFrom::unit).mag / detail::get_canonical_unit(QTo::unit).mag);
 
 template<typename QFrom, typename QTo>
 concept quantity_convertible_to_ =  // exposition only