sol/math/sign.hpp

   1 #if !defined(sol_math_sign_hpp_included)
   2 #define sol_math_sign_hpp_included
   3 /// \addtogroup sol_math
   4 /// \{
   5
   6
   7 /**
   8  * \file sol/math/sign.hpp
   9  * \brief Compile-time sign taking
  10  * \author Sven Suursoho
  11  */
  12
  13
  14 #include <sol/cstdint.hpp>
  15 #include <sol/utility/integral_constant.hpp>
  16
  17
  18 namespace sol { namespace math {
  19
  20
  21 /// Take sign of V during compile-time
  22 template <intmax_t V>
  23 struct sign
  24     : integral_constant<intmax_t, (V < 0) ? -1 : 1>
  25 {};
  26
  27
  28 }}  // namespace sol::math
  29
  30
  31 /// \}
  32 #endif  // sol_math_sign_hpp_included