sgn function improvements

LemLib · Jan 8, 2025 · fabd197 · fabd197
1 parent 9c5a8a5
commit fabd197
Showing 1 changed file with 6 additions and 4 deletions.
diff --git a/include/units/units.hpp b/include/units/units.hpp
@@ -562,12 +562,14 @@ template <isQuantity Q, isQuantity R> constexpr Q min(const Q& lhs, const R& rhs
     return (lhs < rhs ? lhs : rhs);
 }
 
-template <isQuantity Q> constexpr Number sgn(const Q& lhs) {
-    if (lhs.internal() > 0) return 1;
-    if (lhs.internal() < 0) return -1;
-    return 0;
+constexpr double sgn(double lhs) {
+    if (lhs > 0) return 1;
+    if (lhs < 0) return -1;
+    return lhs;
 }
 
+template <isQuantity Q> constexpr double sgn(Q lhs) { return sgn(lhs.internal()); }
+
 template <int R, isQuantity Q, isQuantity S = Exponentiated<Q, std::ratio<R>>> constexpr S pow(const Q& lhs) {
     return S(std::pow(lhs.internal(), R));
 }