From bde00c80c6b40f8b029a67a7b37c916c8dc8e978 Mon Sep 17 00:00:00 2001
From: Mateusz Pusz <mateusz.pusz@gmail.com>
Date: Thu, 15 Feb 2024 22:13:24 +0100
Subject: [PATCH] refactor: total energy refactored to use CTAD instead of
 `auto`

---
 example/total_energy.cpp | 30 +++++++++++++++---------------
 1 file changed, 15 insertions(+), 15 deletions(-)

diff --git a/example/total_energy.cpp b/example/total_energy.cpp
index f183169b..aea49059 100644
--- a/example/total_energy.cpp
+++ b/example/total_energy.cpp
@@ -50,13 +50,13 @@ QuantityOf<isq::mechanical_energy> auto total_energy(QuantityOf<isq::momentum> a
 void si_example()
 {
   using namespace mp_units::si::unit_symbols;
-  constexpr auto GeV = si::giga<si::electronvolt>;
-  constexpr QuantityOf<isq::speed> auto c = 1. * si::si2019::speed_of_light_in_vacuum;
-  auto c2 = pow<2>(c);
+  constexpr Unit auto GeV = si::giga<si::electronvolt>;
+  constexpr quantity c = 1. * si::si2019::speed_of_light_in_vacuum;
+  quantity c2 = pow<2>(c);
 
-  const auto p1 = isq::momentum(4. * GeV / c);
+  const quantity p1 = isq::momentum(4. * GeV / c);
   const QuantityOf<isq::mass> auto m1 = 3. * GeV / c2;
-  const auto E = total_energy(p1, m1, c);
+  const quantity E = total_energy(p1, m1, c);
 
   std::cout << "\n*** SI units (c = " << c << " = " << c.in(si::metre / s) << ") ***\n";
 
@@ -65,18 +65,18 @@ void si_example()
             << "m = " << m1 << "\n"
             << "E = " << E << "\n";
 
-  const auto p2 = p1.in(GeV / (m / s));
-  const auto m2 = m1.in(GeV / pow<2>(m / s));
-  const auto E2 = total_energy(p2, m2, c).in(GeV);
+  const quantity p2 = p1.in(GeV / (m / s));
+  const quantity m2 = m1.in(GeV / pow<2>(m / s));
+  const quantity E2 = total_energy(p2, m2, c).in(GeV);
 
   std::cout << "\n[in `GeV`]\n"
             << "p = " << p2 << "\n"
             << "m = " << m2 << "\n"
             << "E = " << E2 << "\n";
 
-  const auto p3 = p1.in(kg * m / s);
-  const auto m3 = m1.in(kg);
-  const auto E3 = total_energy(p3, m3, c).in(J);
+  const quantity p3 = p1.in(kg * m / s);
+  const quantity m3 = m1.in(kg);
+  const quantity E3 = total_energy(p3, m3, c).in(J);
 
   std::cout << "\n[in SI base units]\n"
             << "p = " << p3 << "\n"
@@ -92,10 +92,10 @@ void natural_example()
   using namespace mp_units::natural;
   using namespace mp_units::natural::unit_symbols;
 
-  constexpr auto c = 1. * speed_of_light;
-  const auto p = 4. * momentum[GeV];
-  const auto m = 3. * mass[GeV];
-  const auto E = total_energy(p, m, c);
+  constexpr quantity c = 1. * speed_of_light;
+  const quantity p = 4. * momentum[GeV];
+  const quantity m = 3. * mass[GeV];
+  const quantity E = total_energy(p, m, c);
 
   std::cout << "\n*** Natural units (c = " << c << ") ***\n"
             << "p = " << p << "\n"