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Diffstat (limited to 'inc/glm/gtx/fast_exponential.inl')
| -rw-r--r-- | inc/glm/gtx/fast_exponential.inl | 166 |
1 files changed, 0 insertions, 166 deletions
diff --git a/inc/glm/gtx/fast_exponential.inl b/inc/glm/gtx/fast_exponential.inl deleted file mode 100644 index 54e1d00..0000000 --- a/inc/glm/gtx/fast_exponential.inl +++ /dev/null @@ -1,166 +0,0 @@ -///////////////////////////////////////////////////////////////////////////////////
-/// OpenGL Mathematics (glm.g-truc.net)
-///
-/// Copyright (c) 2005 - 2015 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.
-///
-/// Restrictions:
-/// By making use of the Software for military purposes, you choose to make
-/// a Bunny unhappy.
-///
-/// 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 gtx_fast_exponential
-/// @file glm/gtx/fast_exponential.inl
-/// @date 2006-01-09 / 2011-06-07
-/// @author Christophe Riccio
-///////////////////////////////////////////////////////////////////////////////////////////////////
-
-namespace glm
-{
- // fastPow:
- template <typename genType>
- GLM_FUNC_QUALIFIER genType fastPow(genType x, genType y)
- {
- return exp(y * log(x));
- }
-
- template <typename T, precision P, template <typename, precision> class vecType>
- GLM_FUNC_QUALIFIER vecType<T, P> fastPow(vecType<T, P> const & x, vecType<T, P> const & y)
- {
- return exp(y * log(x));
- }
-
- template <typename T>
- GLM_FUNC_QUALIFIER T fastPow(T x, int y)
- {
- T f = static_cast<T>(1);
- for(int i = 0; i < y; ++i)
- f *= x;
- return f;
- }
-
- template <typename T, precision P, template <typename, precision> class vecType>
- GLM_FUNC_QUALIFIER vecType<T, P> fastPow(vecType<T, P> const & x, vecType<int, P> const & y)
- {
- vecType<T, P> Result(uninitialize);
- for(detail::component_count_t i = 0; i < detail::component_count(x); ++i)
- Result[i] = fastPow(x[i], y[i]);
- return Result;
- }
-
- // fastExp
- // Note: This function provides accurate results only for value between -1 and 1, else avoid it.
- template <typename T>
- GLM_FUNC_QUALIFIER T fastExp(T x)
- {
- // This has a better looking and same performance in release mode than the following code. However, in debug mode it's slower.
- // return 1.0f + x * (1.0f + x * 0.5f * (1.0f + x * 0.3333333333f * (1.0f + x * 0.25 * (1.0f + x * 0.2f))));
- T x2 = x * x;
- T x3 = x2 * x;
- T x4 = x3 * x;
- T x5 = x4 * x;
- return T(1) + x + (x2 * T(0.5)) + (x3 * T(0.1666666667)) + (x4 * T(0.041666667)) + (x5 * T(0.008333333333));
- }
- /* // Try to handle all values of float... but often shower than std::exp, glm::floor and the loop kill the performance
- GLM_FUNC_QUALIFIER float fastExp(float x)
- {
- const float e = 2.718281828f;
- const float IntegerPart = floor(x);
- const float FloatPart = x - IntegerPart;
- float z = 1.f;
-
- for(int i = 0; i < int(IntegerPart); ++i)
- z *= e;
-
- const float x2 = FloatPart * FloatPart;
- const float x3 = x2 * FloatPart;
- const float x4 = x3 * FloatPart;
- const float x5 = x4 * FloatPart;
- return z * (1.0f + FloatPart + (x2 * 0.5f) + (x3 * 0.1666666667f) + (x4 * 0.041666667f) + (x5 * 0.008333333333f));
- }
-
- // Increase accuracy on number bigger that 1 and smaller than -1 but it's not enough for high and negative numbers
- GLM_FUNC_QUALIFIER float fastExp(float x)
- {
- // This has a better looking and same performance in release mode than the following code. However, in debug mode it's slower.
- // return 1.0f + x * (1.0f + x * 0.5f * (1.0f + x * 0.3333333333f * (1.0f + x * 0.25 * (1.0f + x * 0.2f))));
- float x2 = x * x;
- float x3 = x2 * x;
- float x4 = x3 * x;
- float x5 = x4 * x;
- float x6 = x5 * x;
- float x7 = x6 * x;
- float x8 = x7 * x;
- return 1.0f + x + (x2 * 0.5f) + (x3 * 0.1666666667f) + (x4 * 0.041666667f) + (x5 * 0.008333333333f)+ (x6 * 0.00138888888888f) + (x7 * 0.000198412698f) + (x8 * 0.0000248015873f);;
- }
- */
-
- template <typename T, precision P, template <typename, precision> class vecType>
- GLM_FUNC_QUALIFIER vecType<T, P> fastExp(vecType<T, P> const & x)
- {
- return detail::functor1<T, T, P, vecType>::call(fastExp, x);
- }
-
- // fastLog
- template <typename genType>
- GLM_FUNC_QUALIFIER genType fastLog(genType x)
- {
- return std::log(x);
- }
-
- /* Slower than the VC7.1 function...
- GLM_FUNC_QUALIFIER float fastLog(float x)
- {
- float y1 = (x - 1.0f) / (x + 1.0f);
- float y2 = y1 * y1;
- return 2.0f * y1 * (1.0f + y2 * (0.3333333333f + y2 * (0.2f + y2 * 0.1428571429f)));
- }
- */
-
- template <typename T, precision P, template <typename, precision> class vecType>
- GLM_FUNC_QUALIFIER vecType<T, P> fastLog(vecType<T, P> const & x)
- {
- return detail::functor1<T, T, P, vecType>::call(fastLog, x);
- }
-
- //fastExp2, ln2 = 0.69314718055994530941723212145818f
- template <typename genType>
- GLM_FUNC_QUALIFIER genType fastExp2(genType x)
- {
- return fastExp(0.69314718055994530941723212145818f * x);
- }
-
- template <typename T, precision P, template <typename, precision> class vecType>
- GLM_FUNC_QUALIFIER vecType<T, P> fastExp2(vecType<T, P> const & x)
- {
- return detail::functor1<T, T, P, vecType>::call(fastExp2, x);
- }
-
- // fastLog2, ln2 = 0.69314718055994530941723212145818f
- template <typename genType>
- GLM_FUNC_QUALIFIER genType fastLog2(genType x)
- {
- return fastLog(x) / 0.69314718055994530941723212145818f;
- }
-
- template <typename T, precision P, template <typename, precision> class vecType>
- GLM_FUNC_QUALIFIER vecType<T, P> fastLog2(vecType<T, P> const & x)
- {
- return detail::functor1<T, T, P, vecType>::call(fastLog2, x);
- }
-}//namespace glm
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