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-///////////////////////////////////////////////////////////////////////////////////
-/// 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_trigonometry
-/// @file glm/gtx/fast_trigonometry.inl
-/// @date 2006-01-08 / 2014-11-25
-/// @author Christophe Riccio
-///////////////////////////////////////////////////////////////////////////////////////////////////
-
-namespace glm{
-namespace detail
-{
- template <typename T>
- GLM_FUNC_QUALIFIER T cos_52s(T x)
- {
- T const xx(x * x);
- return (T(0.9999932946) + xx * (T(-0.4999124376) + xx * (T(0.0414877472) + xx * T(-0.0012712095))));
- }
-
- template <typename T, precision P, template <typename, precision> class vecType>
- GLM_FUNC_QUALIFIER vecType<T, P> cos_52s(vecType<T, P> const & x)
- {
- return detail::functor1<T, T, P, vecType>::call(cos_52s, x);
- }
-}//namespace detail
-
- // wrapAngle
- template <typename T>
- GLM_FUNC_QUALIFIER T wrapAngle(T angle)
- {
- return abs<T>(mod<T>(angle, two_pi<T>()));
- }
-
- template <typename T, precision P, template <typename, precision> class vecType>
- GLM_FUNC_QUALIFIER vecType<T, P> wrapAngle(vecType<T, P> const & x)
- {
- return detail::functor1<T, T, P, vecType>::call(wrapAngle, x);
- }
-
- // cos
- template <typename T>
- GLM_FUNC_QUALIFIER T fastCos(T x)
- {
- T const angle(wrapAngle<T>(x));
-
- if(angle<half_pi<T>())
- return detail::cos_52s(angle);
- if(angle<pi<T>())
- return -detail::cos_52s(pi<T>() - angle);
- if(angle<(T(3) * half_pi<T>()))
- return -detail::cos_52s(angle - pi<T>());
-
- return detail::cos_52s(two_pi<T>() - angle);
- }
-
- template <typename T, precision P, template <typename, precision> class vecType>
- GLM_FUNC_QUALIFIER vecType<T, P> fastCos(vecType<T, P> const & x)
- {
- return detail::functor1<T, T, P, vecType>::call(fastCos, x);
- }
-
- // sin
- template <typename T>
- GLM_FUNC_QUALIFIER T fastSin(T x)
- {
- return fastCos<T>(half_pi<T>() - x);
- }
-
- template <typename T, precision P, template <typename, precision> class vecType>
- GLM_FUNC_QUALIFIER vecType<T, P> fastSin(vecType<T, P> const & x)
- {
- return detail::functor1<T, T, P, vecType>::call(fastSin, x);
- }
-
- // tan
- template <typename T>
- GLM_FUNC_QUALIFIER T fastTan(T x)
- {
- return x + (x * x * x * T(0.3333333333)) + (x * x * x * x * x * T(0.1333333333333)) + (x * x * x * x * x * x * x * T(0.0539682539));
- }
-
- template <typename T, precision P, template <typename, precision> class vecType>
- GLM_FUNC_QUALIFIER vecType<T, P> fastTan(vecType<T, P> const & x)
- {
- return detail::functor1<T, T, P, vecType>::call(fastTan, x);
- }
-
- // asin
- template <typename T>
- GLM_FUNC_QUALIFIER T fastAsin(T x)
- {
- return x + (x * x * x * T(0.166666667)) + (x * x * x * x * x * T(0.075)) + (x * x * x * x * x * x * x * T(0.0446428571)) + (x * x * x * x * x * x * x * x * x * T(0.0303819444));// + (x * x * x * x * x * x * x * x * x * x * x * T(0.022372159));
- }
-
- template <typename T, precision P, template <typename, precision> class vecType>
- GLM_FUNC_QUALIFIER vecType<T, P> fastAsin(vecType<T, P> const & x)
- {
- return detail::functor1<T, T, P, vecType>::call(fastAsin, x);
- }
-
- // acos
- template <typename T>
- GLM_FUNC_QUALIFIER T fastAcos(T x)
- {
- return T(1.5707963267948966192313216916398) - fastAsin(x); //(PI / 2)
- }
-
- template <typename T, precision P, template <typename, precision> class vecType>
- GLM_FUNC_QUALIFIER vecType<T, P> fastAcos(vecType<T, P> const & x)
- {
- return detail::functor1<T, T, P, vecType>::call(fastAcos, x);
- }
-
- // atan
- template <typename T>
- GLM_FUNC_QUALIFIER T fastAtan(T y, T x)
- {
- T sgn = sign(y) * sign(x);
- return abs(fastAtan(y / x)) * sgn;
- }
-
- template <typename T, precision P, template <typename, precision> class vecType>
- GLM_FUNC_QUALIFIER vecType<T, P> fastAtan(vecType<T, P> const & y, vecType<T, P> const & x)
- {
- return detail::functor2<T, P, vecType>::call(fastAtan, y, x);
- }
-
- template <typename T>
- GLM_FUNC_QUALIFIER T fastAtan(T x)
- {
- return x - (x * x * x * T(0.333333333333)) + (x * x * x * x * x * T(0.2)) - (x * x * x * x * x * x * x * T(0.1428571429)) + (x * x * x * x * x * x * x * x * x * T(0.111111111111)) - (x * x * x * x * x * x * x * x * x * x * x * T(0.0909090909));
- }
-
- template <typename T, precision P, template <typename, precision> class vecType>
- GLM_FUNC_QUALIFIER vecType<T, P> fastAtan(vecType<T, P> const & x)
- {
- return detail::functor1<T, T, P, vecType>::call(fastAtan, x);
- }
-}//namespace glm