1 /////////////////////////////////////////////////////////////////////////////////// 2 /// OpenGL Mathematics (glm.g-truc.net) 3 /// 4 /// Copyright (c) 2005 - 2014 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_integer 24 /// @file glm/gtx/integer.hpp 25 /// @date 2005-12-24 / 2011-10-13 26 /// @author Christophe Riccio 27 /// 28 /// @see core (dependence) 29 /// 30 /// @defgroup gtx_integer GLM_GTX_integer 31 /// @ingroup gtx 32 /// 33 /// @brief Add support for integer for core functions 34 /// 35 /// <glm/gtx/integer.hpp> need to be included to use these functionalities. 36 /////////////////////////////////////////////////////////////////////////////////// 37 38 #ifndef GLM_GTX_integer 39 #define GLM_GTX_integer 40 41 // Dependency: 42 #include "../glm.hpp" 43 44 #if(defined(GLM_MESSAGES) && !defined(GLM_EXT_INCLUDED)) 45 # pragma message("GLM: GLM_GTX_integer extension included") 46 #endif 47 48 namespace glm 49 { 50 /// @addtogroup gtx_integer 51 /// @{ 52 53 //! Returns x raised to the y power. 54 //! From GLM_GTX_integer extension. 55 GLM_FUNC_DECL int pow(int x, int y); 56 57 //! Returns the positive square root of x. 58 //! From GLM_GTX_integer extension. 59 GLM_FUNC_DECL int sqrt(int x); 60 61 //! Returns the log2 of x. Can be reliably using to compute mipmap count from the texture size. 62 //! From GLM_GTX_integer extension. 63 template <typename genIUType> 64 GLM_FUNC_DECL genIUType log2(genIUType x); 65 66 //! Returns the floor log2 of x. 67 //! From GLM_GTX_integer extension. 68 GLM_FUNC_DECL unsigned int floor_log2(unsigned int x); 69 70 //! Modulus. Returns x - y * floor(x / y) for each component in x using the floating point value y. 71 //! From GLM_GTX_integer extension. 72 GLM_FUNC_DECL int mod(int x, int y); 73 74 //! Return the factorial value of a number (!12 max, integer only) 75 //! From GLM_GTX_integer extension. 76 template <typename genType> 77 GLM_FUNC_DECL genType factorial(genType const & x); 78 79 //! 32bit signed integer. 80 //! From GLM_GTX_integer extension. 81 typedef signed int sint; 82 83 //! Returns x raised to the y power. 84 //! From GLM_GTX_integer extension. 85 GLM_FUNC_DECL uint pow(uint x, uint y); 86 87 //! Returns the positive square root of x. 88 //! From GLM_GTX_integer extension. 89 GLM_FUNC_DECL uint sqrt(uint x); 90 91 //! Modulus. Returns x - y * floor(x / y) for each component in x using the floating point value y. 92 //! From GLM_GTX_integer extension. 93 GLM_FUNC_DECL uint mod(uint x, uint y); 94 95 //! Returns the number of leading zeros. 96 //! From GLM_GTX_integer extension. 97 GLM_FUNC_DECL uint nlz(uint x); 98 99 /// @} 100 }//namespace glm 101 102 #include "integer.inl" 103 104 #endif//GLM_GTX_integer 105
