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Diffstat (limited to 'src/libraries/glm/core/func_exponential.inl')
| -rwxr-xr-x | src/libraries/glm/core/func_exponential.inl | 155 |
1 files changed, 155 insertions, 0 deletions
diff --git a/src/libraries/glm/core/func_exponential.inl b/src/libraries/glm/core/func_exponential.inl new file mode 100755 index 0000000..6ae709c --- /dev/null +++ b/src/libraries/glm/core/func_exponential.inl @@ -0,0 +1,155 @@ +/////////////////////////////////////////////////////////////////////////////////// +/// OpenGL Mathematics (glm.g-truc.net) +/// +/// Copyright (c) 2005 - 2012 G-Truc Creation (www.g-truc.net) +/// Permission is hereby granted, free of charge, to any person obtaining a copy +/// of this software and associated documentation files (the "Software"), to deal +/// in the Software without restriction, including without limitation the rights +/// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +/// copies of the Software, and to permit persons to whom the Software is +/// furnished to do so, subject to the following conditions: +/// +/// The above copyright notice and this permission notice shall be included in +/// all copies or substantial portions of the Software. +/// +/// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +/// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +/// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +/// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +/// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +/// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN +/// THE SOFTWARE. +/// +/// @ref core +/// @file glm/core/func_exponential.inl +/// @date 2008-08-03 / 2011-06-15 +/// @author Christophe Riccio +/////////////////////////////////////////////////////////////////////////////////// + +namespace glm +{ + // pow + template <typename genType> + GLM_FUNC_QUALIFIER genType pow + ( + genType const & x, + genType const & y + ) + { + GLM_STATIC_ASSERT(detail::type<genType>::is_float, "'pow' only accept floating-point input"); + + return genType(::std::pow(x, y)); + } + + VECTORIZE_VEC_VEC(pow) + + // exp + template <typename genType> + GLM_FUNC_QUALIFIER genType exp + ( + genType const & x + ) + { + GLM_STATIC_ASSERT(detail::type<genType>::is_float, "'exp' only accept floating-point input"); + + return genType(::std::exp(x)); + } + + VECTORIZE_VEC(exp) + + // log + template <typename genType> + GLM_FUNC_QUALIFIER genType log + ( + genType const & x + ) + { + GLM_STATIC_ASSERT(detail::type<genType>::is_float, "'log' only accept floating-point input"); + + return genType(::std::log(x)); + } + + VECTORIZE_VEC(log) + + //exp2, ln2 = 0.69314718055994530941723212145818f + template <typename genType> + GLM_FUNC_QUALIFIER genType exp2 + ( + genType const & x + ) + { + GLM_STATIC_ASSERT(detail::type<genType>::is_float, "'exp2' only accept floating-point input"); + + return genType(::std::exp(genType(0.69314718055994530941723212145818) * x)); + } + + VECTORIZE_VEC(exp2) + +namespace _detail +{ + template <int _PATH = detail::float_or_int_value::GLM_ERROR> + struct _compute_log2 + { + template <typename T> + T operator() (T const & Value) const; +/* + { + GLM_STATIC_ASSERT(0, "'log2' parameter has an invalid template parameter type. GLM core features only supports floating-point types, include <glm/gtx/integer.hpp> for integer types support. Others types are not supported."); + return Value; + } +*/ + }; + + template <> + struct _compute_log2<detail::float_or_int_value::GLM_FLOAT> + { + template <typename T> + T operator() (T const & Value) const + { + return T(::std::log(Value)) / T(0.69314718055994530941723212145818); + } + }; + +}//namespace _detail + + // log2, ln2 = 0.69314718055994530941723212145818f + template <typename genType> + GLM_FUNC_QUALIFIER genType log2 + ( + genType const & x + ) + { + assert(x > genType(0)); // log2 is only defined on the range (0, inf] + return _detail::_compute_log2<detail::float_or_int_trait<genType>::ID>()(x); + } + + VECTORIZE_VEC(log2) + + // sqrt + template <typename genType> + GLM_FUNC_QUALIFIER genType sqrt + ( + genType const & x + ) + { + GLM_STATIC_ASSERT(detail::type<genType>::is_float, "'sqrt' only accept floating-point input"); + + return genType(::std::sqrt(x)); + } + + VECTORIZE_VEC(sqrt) + + template <typename genType> + GLM_FUNC_QUALIFIER genType inversesqrt + ( + genType const & x + ) + { + GLM_STATIC_ASSERT(detail::type<genType>::is_float, "'inversesqrt' only accept floating-point input"); + + return genType(1) / ::std::sqrt(x); + } + + VECTORIZE_VEC(inversesqrt) + +}//namespace glm |