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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 gtc_ulp
  24. /// @file glm/gtc/ulp.hpp
  25. /// @date 2011-02-21 / 2011-12-12
  26. /// @author Christophe Riccio
  27. ///
  28. /// @see core (dependence)
  29. ///
  30. /// @defgroup gtc_ulp GLM_GTC_ulp
  31. /// @ingroup gtc
  32. ///
  33. /// @brief Allow the measurement of the accuracy of a function against a reference
  34. /// implementation. This extension works on floating-point data and provide results
  35. /// in ULP.
  36. /// <glm/gtc/ulp.hpp> need to be included to use these features.
  37. ///////////////////////////////////////////////////////////////////////////////////
  38. #ifndef GLM_GTC_ulp
  39. #define GLM_GTC_ulp GLM_VERSION
  40. // Dependency:
  41. #include "../glm.hpp"
  42. #if(defined(GLM_MESSAGES) && !defined(glm_ext))
  43. # pragma message("GLM: GLM_GTC_ulp extension included")
  44. #endif
  45. namespace glm
  46. {
  47. /// @addtogroup gtc_ulp
  48. /// @{
  49. /// Return the next ULP value(s) after the input value(s).
  50. /// @see gtc_ulp
  51. template <typename genType>
  52. genType next_float(genType const & x);
  53. /// Return the previous ULP value(s) before the input value(s).
  54. /// @see gtc_ulp
  55. template <typename genType>
  56. genType prev_float(genType const & x);
  57. /// Return the value(s) ULP distance after the input value(s).
  58. /// @see gtc_ulp
  59. template <typename genType>
  60. genType next_float(genType const & x, uint const & Distance);
  61. /// Return the value(s) ULP distance before the input value(s).
  62. /// @see gtc_ulp
  63. template <typename genType>
  64. genType prev_float(genType const & x, uint const & Distance);
  65. /// Return the distance in the number of ULP between 2 scalars.
  66. /// @see gtc_ulp
  67. template <typename T>
  68. uint float_distance(T const & x, T const & y);
  69. /// Return the distance in the number of ULP between 2 vectors.
  70. /// @see gtc_ulp
  71. template<typename T, template<typename> class vecType>
  72. vecType<uint> float_distance(vecType<T> const & x, vecType<T> const & y);
  73. /// @}
  74. }// namespace glm
  75. #include "ulp.inl"
  76. #endif//GLM_GTC_ulp