Set to c++14.

CMakeLists.txt

@@ -35,7 +35,7 @@ SET(PROJECT_DEBUG_POSTFIX "_d")
 set(INSTALL_GENERATED_HEADERS OFF)
 
 set(DOXYGEN_USE_MATHJAX "NO")
-set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD 14)
 
 option(BUILD_TESTING "Disable unit tests." ON)
 option(BUILD_TEST_STATIC_BOOST "Build unit tests with static boost libraries" OFF)

include/math_utils.h

@@ -49,7 +49,7 @@ constexpr T Binomial(int n, int k)
 template <typename T>
 constexpr T pow(T n, T k)
 {
-    static_assert(std::is_integral_v<T>, "For integral values only, eitherwise, use std::pow");
+    static_assert(std::is_integral<T>::value, "For integral values only, eitherwise, use std::pow");
     if (n == 0)
         return (k == 0) ? 1 : 0;
     else if (k == 0)