//********************************************************
// The following code example is taken from the book
//  C++20 - The Complete Guide
//  by Nicolai M. Josuttis (www.josuttis.com)
//  http://www.cppstd20.com
//
// The code is licensed under a
//  Creative Commons Attribution 4.0 International License
//  http://creativecommons.org/licenses/by/4.0/
//********************************************************


// square() for runtime only:
inline int squareR(int x) {
  return x * x;
}

// square() for compile time and runtime:
constexpr int squareCR(int x) {
  return x * x;
}

// square() for compile time only:
consteval int squareC(int x) {
  return x * x;
}