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///////////////////////////////////////////////////////////////////////////////////
/// OpenGL Mathematics (glm.g-truc.net)
///
/// Copyright (c) 2005 - 2013 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");
assert(x > genType(0));
return genType(1) / ::std::sqrt(x);
}
VECTORIZE_VEC(inversesqrt)
}//namespace glm
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