CS计算机代考程序代写 cuda compiler ///////////////////////////////////////////////////////////////////////////////////

///////////////////////////////////////////////////////////////////////////////////
/// OpenGL Mathematics (glm.g-truc.net)
///
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/// @ref gtx_fast_square_root
/// @file glm/gtx/fast_square_root.inl
/// @date 2006-01-04 / 2011-06-07
/// @author Christophe Riccio
///////////////////////////////////////////////////////////////////////////////////////////////////

namespace glm
{
// fastSqrt
template
GLM_FUNC_QUALIFIER genType fastSqrt(genType x)
{
GLM_STATIC_ASSERT(std::numeric_limits::is_iec559, “‘fastSqrt’ only accept floating-point input”);

return genType(1) / fastInverseSqrt(x);
}

template class vecType>
GLM_FUNC_QUALIFIER vecType fastSqrt(vecType const & x)
{
return detail::functor1::call(fastSqrt, x);
}

// fastInversesqrt
template
GLM_FUNC_QUALIFIER genType fastInverseSqrt(genType x)
{
# ifdef __CUDACC__ // Wordaround for a CUDA compiler bug up to CUDA6
tvec1 tmp(detail::compute_inversesqrt::call(tvec1(x)));
return tmp.x;
# else
return detail::compute_inversesqrt::call(tvec1(x)).x;
# endif
}

template class vecType>
GLM_FUNC_QUALIFIER vecType fastInverseSqrt(vecType const & x)
{
return detail::compute_inversesqrt::call(x);
}

// fastLength
template
GLM_FUNC_QUALIFIER genType fastLength(genType x)
{
GLM_STATIC_ASSERT(std::numeric_limits::is_iec559, “‘fastLength’ only accept floating-point inputs”);

return abs(x);
}

template class vecType>
GLM_FUNC_QUALIFIER T fastLength(vecType const & x)
{
GLM_STATIC_ASSERT(std::numeric_limits::is_iec559, “‘fastLength’ only accept floating-point inputs”);

return fastSqrt(dot(x, x));
}

// fastDistance
template
GLM_FUNC_QUALIFIER genType fastDistance(genType x, genType y)
{
return fastLength(y – x);
}

template class vecType>
GLM_FUNC_QUALIFIER T fastDistance(vecType const & x, vecType const & y)
{
return fastLength(y – x);
}

// fastNormalize
template
GLM_FUNC_QUALIFIER genType fastNormalize(genType x)
{
return x > genType(0) ? genType(1) : -genType(1);
}

template class vecType>
GLM_FUNC_QUALIFIER vecType fastNormalize(vecType const & x)
{
return x * fastInverseSqrt(dot(x, x));
}
}//namespace glm