Merge branch 'master' into mag-value-t

src/core/include/units/bits/derived_unit.h

@@ -47,7 +47,7 @@ constexpr ratio inverse_if_negative(const ratio& r)
 template<Unit... Us, typename... Es>
 constexpr ratio derived_ratio(exponent_list<Es...>)
 {
-  return (... * inverse_if_negative<Es>(pow<detail::abs(Es::num)>(Us::ratio) / dimension_unit<typename Es::dimension>::ratio));
+  return (... * inverse_if_negative<Es>(pow<detail::abs(Es::num)>(Us::ratio / dimension_unit<typename Es::dimension>::ratio)));
 }
 
 template<DerivedDimension D, Unit... Us>

src/core/include/units/bits/external/hacks.h

@@ -63,18 +63,13 @@
 #define UNITS_DIAGNOSTIC_IGNORE_UNREACHABLE UNITS_DIAGNOSTIC_IGNORE(4702)
 #endif
 
-#if UNITS_COMP_CLANG
-
-#include <ciso646>
 #if _LIBCPP_VERSION
 #define UNITS_LIBCXX _LIBCPP_VERSION
 #endif
 
-#endif
-
 #if UNITS_LIBCXX
 
-#if UNITS_COMP_CLANG == 12
+#if UNITS_LIBCXX < 13000
 
 #include <concepts/concepts.hpp>
 #include <range/v3/algorithm/lower_bound.hpp>
@@ -84,7 +79,7 @@
 #include <range/v3/iterator/concepts.hpp>
 #include <range/v3/range/concepts.hpp>
 
-#elif UNITS_COMP_CLANG == 13
+#elif UNITS_LIBCXX < 14000
 
 #include <range/v3/functional/comparisons.hpp>
 
@@ -115,7 +110,7 @@ concept default_constructible = constructible_from<T>;
 
 #elif UNITS_LIBCXX
 
-#if UNITS_COMP_CLANG == 12
+#if UNITS_LIBCXX < 13000
 
 // concepts
 using concepts::common_with;
@@ -228,7 +223,7 @@ constexpr bool in_range(T t) noexcept
         std::cmp_less_equal(t, std::numeric_limits<R>::max());
 }
 
-#elif UNITS_COMP_CLANG == 13
+#elif UNITS_LIBCXX < 14000
 
 using concepts::three_way_comparable;
 using concepts::three_way_comparable_with;

src/core/include/units/magnitude.h

@@ -363,16 +363,6 @@ concept Magnitude = detail::is_magnitude<T>;
 template<typename T>
 T get_value(Magnitude auto m) { return m.template value<T>; }
 
-/**
- * @brief  Convert any positive integer to a Magnitude.
- *
- * This will be the main way end users create Magnitudes.  They should rarely (if ever) create a magnitude<...> by
- * manually adding base powers.
- */
-template<ratio R>
-  requires (R.num > 0)
-constexpr Magnitude auto as_magnitude();
-
 /**
  * @brief  A base to represent pi.
  */