Added thirdparty: boost library

thirdparty/include/boost/qvm/quat_traits.hpp

@@ -0,0 +1,97 @@
+#ifndef BOOST_QVM_QUAT_TRAITS
+#define BOOST_QVM_QUAT_TRAITS
+
+// Copyright 2008-2022 Emil Dotchevski and Reverge Studios, Inc.
+
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+#include <boost/qvm/is_scalar.hpp>
+#include <boost/qvm/enable_if.hpp>
+#include <boost/qvm/config.hpp>
+
+namespace boost { namespace qvm {
+
+template <class Q>
+struct
+quat_traits
+    {
+    typedef void scalar_type;
+    };
+
+template <class T>
+struct
+is_quat
+    {
+    static bool const value = is_scalar<typename quat_traits<T>::scalar_type>::value;
+    };
+
+namespace
+qvm_detail
+    {
+    template <class T, T>
+    struct
+    qtr_dispatch_yes
+        {
+        char x, y;
+        };
+    }
+
+template <class T>
+class
+quat_write_element_ref
+    {
+    template <class U>
+    static qvm_detail::qtr_dispatch_yes<typename quat_traits<U>::scalar_type & (*)( U & ), &quat_traits<U>::template write_element<0> > check(int);
+
+    template <class>
+    static char check(long);
+
+    public:
+
+    static bool const value = sizeof(check<T>(0)) > 1;
+    };
+
+template <int I, class Q>
+BOOST_QVM_CONSTEXPR BOOST_QVM_INLINE_CRITICAL
+typename enable_if_c<
+    quat_write_element_ref<Q>::value,
+    void>::type
+write_quat_element( Q & q, typename quat_traits<Q>::scalar_type s )
+    {
+    quat_traits<Q>::template write_element<I>(q) = s;
+    }
+
+template <int I, class Q>
+BOOST_QVM_CONSTEXPR BOOST_QVM_INLINE_CRITICAL
+typename enable_if_c<
+    !quat_write_element_ref<Q>::value,
+    void>::type
+write_quat_element( Q & q, typename quat_traits<Q>::scalar_type s )
+    {
+    quat_traits<Q>::template write_element<I>(q, s);
+    }
+
+template <class Q>
+BOOST_QVM_CONSTEXPR BOOST_QVM_INLINE_CRITICAL
+typename enable_if_c<
+    quat_write_element_ref<Q>::value,
+    void>::type
+write_quat_element_idx( int i, Q & q, typename quat_traits<Q>::scalar_type s )
+    {
+    quat_traits<Q>::template write_element_idx(i, q) = s;
+    }
+
+template <class Q>
+BOOST_QVM_CONSTEXPR BOOST_QVM_INLINE_CRITICAL
+typename enable_if_c<
+    !quat_write_element_ref<Q>::value,
+    void>::type
+write_vec_element_idx( int i, Q & q, typename quat_traits<Q>::scalar_type s )
+    {
+    quat_traits<Q>::template write_element_idx(i, q, s);
+    }
+
+} }
+
+#endif