Add min(), max() for any number of arguments

math/math.h

@@ -12,6 +12,31 @@ CPP_UTILITIES_EXPORT int factorial(int number);
 CPP_UTILITIES_EXPORT uint64 powerModulo(uint64 base, uint64 expontent, uint64 module);
 CPP_UTILITIES_EXPORT int64 inverseModulo(int64 number, int64 module);
 CPP_UTILITIES_EXPORT uint64 orderModulo(uint64 number, uint64 module);
+
+/// \brief Returns the smallest of the given items.
+template <typename T> constexpr T min(T first, T second)
+{
+    return first < second ? first : second;
+}
+
+/// \brief Returns the smallest of the given items.
+template <typename T1, typename... T2> constexpr T1 min(T1 first, T1 second, T2... remaining)
+{
+    return first < second ? min(first, remaining...) : min(second, remaining...);
+}
+
+/// \brief Returns the greatest of the given items.
+template <typename T> constexpr T max(T first, T second)
+{
+    return first > second ? first : second;
+}
+
+/// \brief Returns the greatest of the given items.
+template <typename T1, typename... T2> constexpr T1 max(T1 first, T1 second, T2... remaining)
+{
+    return first > second ? max(first, remaining...) : max(second, remaining...);
+}
+
 } // namespace MathUtilities
 
 #endif // MATHUTILITIES_H

tests/mathtests.cpp

@@ -10,6 +10,19 @@ using namespace TestUtilities::Literals;
 
 using namespace CPPUNIT_NS;
 
+namespace MathUtilities {
+
+static_assert(min(1, 2, 3) == 1, "min");
+static_assert(min(3, 2, 1) == 1, "min");
+static_assert(min(3, 4, 2, 1) == 1, "min");
+static_assert(min(3, 4, -2, 2, 1) == -2, "min");
+static_assert(max(1, 2, 3) == 3, "max");
+static_assert(max(3, 2, 1) == 3, "max");
+static_assert(max(3, 4, 2, 1) == 4, "max");
+static_assert(max(3, -2, 4, 2, 1) == 4, "max");
+
+} // namespace MathUtilities
+
 /*!
  * \brief The MathTests class tests functions of the MathUtilities namespace.
  */