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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_fast_exponential
  24. /// @file glm/gtx/fast_exponential.hpp
  25. /// @date 2006-01-09 / 2011-06-07
  26. /// @author Christophe Riccio
  27. ///
  28. /// @see core (dependence)
  29. /// @see gtx_half_float (dependence)
  30. ///
  31. /// @defgroup gtx_fast_exponential GLM_GTX_fast_exponential
  32. /// @ingroup gtx
  33. ///
  34. /// @brief Fast but less accurate implementations of exponential based functions.
  35. ///
  36. /// <glm/gtx/fast_exponential.hpp> need to be included to use these functionalities.
  37. ///////////////////////////////////////////////////////////////////////////////////
  38. #ifndef GLM_GTX_fast_exponential
  39. #define GLM_GTX_fast_exponential GLM_VERSION
  40. // Dependency:
  41. #include "../glm.hpp"
  42. #include "../gtc/half_float.hpp"
  43. #if(defined(GLM_MESSAGES) && !defined(glm_ext))
  44. # pragma message("GLM: GLM_GTX_fast_exponential extension included")
  45. #endif
  46. namespace glm
  47. {
  48. /// @addtogroup gtx_fast_exponential
  49. /// @{
  50. /// Faster than the common pow function but less accurate.
  51. /// @see gtx_fast_exponential
  52. template <typename genType>
  53. genType fastPow(
  54. genType const & x,
  55. genType const & y);
  56. /// Faster than the common pow function but less accurate.
  57. /// @see gtx_fast_exponential
  58. template <typename genTypeT, typename genTypeU>
  59. genTypeT fastPow(
  60. genTypeT const & x,
  61. genTypeU const & y);
  62. /// Faster than the common exp function but less accurate.
  63. /// @see gtx_fast_exponential
  64. template <typename T>
  65. T fastExp(const T& x);
  66. /// Faster than the common log function but less accurate.
  67. /// @see gtx_fast_exponential
  68. template <typename T>
  69. T fastLog(const T& x);
  70. /// Faster than the common exp2 function but less accurate.
  71. /// @see gtx_fast_exponential
  72. template <typename T>
  73. T fastExp2(const T& x);
  74. /// Faster than the common log2 function but less accurate.
  75. /// @see gtx_fast_exponential
  76. template <typename T>
  77. T fastLog2(const T& x);
  78. /// Faster than the common ln function but less accurate.
  79. /// @see gtx_fast_exponential
  80. template <typename T>
  81. T fastLn(const T& x);
  82. /// @}
  83. }//namespace glm
  84. #include "fast_exponential.inl"
  85. #endif//GLM_GTX_fast_exponential