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  1. ///////////////////////////////////////////////////////////////////////////////////
  2. /// OpenGL Mathematics (glm.g-truc.net)
  3. ///
  4. /// Copyright (c) 2005 - 2013 G-Truc Creation (www.g-truc.net)
  5. /// Permission is hereby granted, free of charge, to any person obtaining a copy
  6. /// of this software and associated documentation files (the "Software"), to deal
  7. /// in the Software without restriction, including without limitation the rights
  8. /// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  9. /// copies of the Software, and to permit persons to whom the Software is
  10. /// furnished to do so, subject to the following conditions:
  11. ///
  12. /// The above copyright notice and this permission notice shall be included in
  13. /// all copies or substantial portions of the Software.
  14. ///
  15. /// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16. /// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17. /// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  18. /// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19. /// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  20. /// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  21. /// THE SOFTWARE.
  22. ///
  23. /// @ref gtx_optimum_pow
  24. /// @file glm/gtx/optimum_pow.hpp
  25. /// @date 2005-12-21 / 2011-06-07
  26. /// @author Christophe Riccio
  27. ///
  28. /// @see core (dependence)
  29. ///
  30. /// @defgroup gtx_optimum_pow GLM_GTX_optimum_pow
  31. /// @ingroup gtx
  32. ///
  33. /// @brief Integer exponentiation of power functions.
  34. ///
  35. /// <glm/gtx/optimum_pow.hpp> need to be included to use these functionalities.
  36. ///////////////////////////////////////////////////////////////////////////////////
  37. #ifndef GLM_GTX_optimum_pow
  38. #define GLM_GTX_optimum_pow GLM_VERSION
  39. // Dependency:
  40. #include "../glm.hpp"
  41. #if(defined(GLM_MESSAGES) && !defined(glm_ext))
  42. # pragma message("GLM: GLM_GTX_optimum_pow extension included")
  43. #endif
  44. namespace glm{
  45. namespace gtx
  46. {
  47. /// @addtogroup gtx_optimum_pow
  48. /// @{
  49. //! Returns x raised to the power of 2.
  50. //! From GLM_GTX_optimum_pow extension.
  51. template <typename genType>
  52. genType pow2(const genType& x);
  53. //! Returns x raised to the power of 3.
  54. //! From GLM_GTX_optimum_pow extension.
  55. template <typename genType>
  56. genType pow3(const genType& x);
  57. //! Returns x raised to the power of 4.
  58. //! From GLM_GTX_optimum_pow extension.
  59. template <typename genType>
  60. genType pow4(const genType& x);
  61. //! Checks if the parameter is a power of 2 number.
  62. //! From GLM_GTX_optimum_pow extension.
  63. bool powOfTwo(int num);
  64. //! Checks to determine if the parameter component are power of 2 numbers.
  65. //! From GLM_GTX_optimum_pow extension.
  66. detail::tvec2<bool> powOfTwo(const detail::tvec2<int>& x);
  67. //! Checks to determine if the parameter component are power of 2 numbers.
  68. //! From GLM_GTX_optimum_pow extension.
  69. detail::tvec3<bool> powOfTwo(const detail::tvec3<int>& x);
  70. //! Checks to determine if the parameter component are power of 2 numbers.
  71. //! From GLM_GTX_optimum_pow extension.
  72. detail::tvec4<bool> powOfTwo(const detail::tvec4<int>& x);
  73. /// @}
  74. }//namespace gtx
  75. }//namespace glm
  76. #include "optimum_pow.inl"
  77. #endif//GLM_GTX_optimum_pow