summaryrefslogtreecommitdiffstats
path: root/depedencies/include/glm/detail/func_exponential.inl
diff options
context:
space:
mode:
Diffstat (limited to 'depedencies/include/glm/detail/func_exponential.inl')
-rw-r--r--depedencies/include/glm/detail/func_exponential.inl146
1 files changed, 146 insertions, 0 deletions
diff --git a/depedencies/include/glm/detail/func_exponential.inl b/depedencies/include/glm/detail/func_exponential.inl
new file mode 100644
index 0000000..227fe91
--- /dev/null
+++ b/depedencies/include/glm/detail/func_exponential.inl
@@ -0,0 +1,146 @@
+/// @ref core
+/// @file glm/detail/func_exponential.inl
+
+#include "func_vector_relational.hpp"
+#include "_vectorize.hpp"
+#include <limits>
+#include <cmath>
+#include <cassert>
+
+namespace glm{
+namespace detail
+{
+# if GLM_HAS_CXX11_STL
+ using std::log2;
+# else
+ template <typename genType>
+ genType log2(genType Value)
+ {
+ return std::log(Value) * static_cast<genType>(1.4426950408889634073599246810019);
+ }
+# endif
+
+ template <typename T, precision P, template <class, precision> class vecType, bool isFloat, bool Aligned>
+ struct compute_log2
+ {
+ GLM_FUNC_QUALIFIER static vecType<T, P> call(vecType<T, P> const & vec)
+ {
+ return detail::functor1<T, T, P, vecType>::call(log2, vec);
+ }
+ };
+
+ template <template <class, precision> class vecType, typename T, precision P, bool Aligned>
+ struct compute_sqrt
+ {
+ GLM_FUNC_QUALIFIER static vecType<T, P> call(vecType<T, P> const & x)
+ {
+ return detail::functor1<T, T, P, vecType>::call(std::sqrt, x);
+ }
+ };
+
+ template <template <class, precision> class vecType, typename T, precision P, bool Aligned>
+ struct compute_inversesqrt
+ {
+ GLM_FUNC_QUALIFIER static vecType<T, P> call(vecType<T, P> const & x)
+ {
+ return static_cast<T>(1) / sqrt(x);
+ }
+ };
+
+ template <template <class, precision> class vecType, bool Aligned>
+ struct compute_inversesqrt<vecType, float, lowp, Aligned>
+ {
+ GLM_FUNC_QUALIFIER static vecType<float, lowp> call(vecType<float, lowp> const & x)
+ {
+ vecType<float, lowp> tmp(x);
+ vecType<float, lowp> xhalf(tmp * 0.5f);
+ vecType<uint, lowp>* p = reinterpret_cast<vecType<uint, lowp>*>(const_cast<vecType<float, lowp>*>(&x));
+ vecType<uint, lowp> i = vecType<uint, lowp>(0x5f375a86) - (*p >> vecType<uint, lowp>(1));
+ vecType<float, lowp>* ptmp = reinterpret_cast<vecType<float, lowp>*>(&i);
+ tmp = *ptmp;
+ tmp = tmp * (1.5f - xhalf * tmp * tmp);
+ return tmp;
+ }
+ };
+}//namespace detail
+
+ // pow
+ using std::pow;
+ template <typename T, precision P, template <typename, precision> class vecType>
+ GLM_FUNC_QUALIFIER vecType<T, P> pow(vecType<T, P> const & base, vecType<T, P> const & exponent)
+ {
+ return detail::functor2<T, P, vecType>::call(pow, base, exponent);
+ }
+
+ // exp
+ using std::exp;
+ template <typename T, precision P, template <typename, precision> class vecType>
+ GLM_FUNC_QUALIFIER vecType<T, P> exp(vecType<T, P> const & x)
+ {
+ return detail::functor1<T, T, P, vecType>::call(exp, x);
+ }
+
+ // log
+ using std::log;
+ template <typename T, precision P, template <typename, precision> class vecType>
+ GLM_FUNC_QUALIFIER vecType<T, P> log(vecType<T, P> const & x)
+ {
+ return detail::functor1<T, T, P, vecType>::call(log, x);
+ }
+
+ //exp2, ln2 = 0.69314718055994530941723212145818f
+ template <typename genType>
+ GLM_FUNC_QUALIFIER genType exp2(genType x)
+ {
+ GLM_STATIC_ASSERT(std::numeric_limits<genType>::is_iec559, "'exp2' only accept floating-point inputs");
+
+ return std::exp(static_cast<genType>(0.69314718055994530941723212145818) * x);
+ }
+
+ template <typename T, precision P, template <typename, precision> class vecType>
+ GLM_FUNC_QUALIFIER vecType<T, P> exp2(vecType<T, P> const & x)
+ {
+ return detail::functor1<T, T, P, vecType>::call(exp2, x);
+ }
+
+ // log2, ln2 = 0.69314718055994530941723212145818f
+ template <typename genType>
+ GLM_FUNC_QUALIFIER genType log2(genType x)
+ {
+ return log2(tvec1<genType>(x)).x;
+ }
+
+ template <typename T, precision P, template <typename, precision> class vecType>
+ GLM_FUNC_QUALIFIER vecType<T, P> log2(vecType<T, P> const & x)
+ {
+ return detail::compute_log2<T, P, vecType, std::numeric_limits<T>::is_iec559, detail::is_aligned<P>::value>::call(x);
+ }
+
+ // sqrt
+ using std::sqrt;
+ template <typename T, precision P, template <typename, precision> class vecType>
+ GLM_FUNC_QUALIFIER vecType<T, P> sqrt(vecType<T, P> const & x)
+ {
+ GLM_STATIC_ASSERT(std::numeric_limits<T>::is_iec559, "'sqrt' only accept floating-point inputs");
+ return detail::compute_sqrt<vecType, T, P, detail::is_aligned<P>::value>::call(x);
+ }
+
+ // inversesqrt
+ template <typename genType>
+ GLM_FUNC_QUALIFIER genType inversesqrt(genType x)
+ {
+ return static_cast<genType>(1) / sqrt(x);
+ }
+
+ template <typename T, precision P, template <typename, precision> class vecType>
+ GLM_FUNC_QUALIFIER vecType<T, P> inversesqrt(vecType<T, P> const & x)
+ {
+ GLM_STATIC_ASSERT(std::numeric_limits<T>::is_iec559, "'inversesqrt' only accept floating-point inputs");
+ return detail::compute_inversesqrt<vecType, T, P, detail::is_aligned<P>::value>::call(x);
+ }
+}//namespace glm
+
+#if GLM_ARCH != GLM_ARCH_PURE && GLM_HAS_UNRESTRICTED_UNIONS
+# include "func_exponential_simd.inl"
+#endif
+