Added thirdparty: boost library

thirdparty/include/boost/qvm/scalar_traits.hpp

@@ -0,0 +1,81 @@
+#ifndef BOOST_QVM_SCALAR_TRAITS_HPP_INCLUDED
+#define BOOST_QVM_SCALAR_TRAITS_HPP_INCLUDED
+
+// 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/quat_traits.hpp>
+#include <boost/qvm/vec_traits.hpp>
+#include <boost/qvm/mat_traits.hpp>
+#include <boost/qvm/config.hpp>
+
+namespace boost { namespace qvm {
+
+template <class Scalar>
+struct
+scalar_traits
+    {
+    static
+    BOOST_QVM_CONSTEXPR BOOST_QVM_INLINE_CRITICAL
+    Scalar
+    value( int v )
+        {
+        return Scalar(v);
+        }
+    };
+
+namespace
+qvm_detail
+    {
+    template <class A,
+        bool IsQ=is_quat<A>::value,
+        bool IsV=is_vec<A>::value,
+        bool IsM=is_mat<A>::value,
+        bool IsS=is_scalar<A>::value>
+    struct
+    scalar_impl
+        {
+        typedef void type;
+        };
+
+    template <class A>
+    struct
+    scalar_impl<A,false,false,false,true>
+        {
+        typedef A type;
+        };
+
+    template <class A>
+    struct
+    scalar_impl<A,false,false,true,false>
+        {
+        typedef typename mat_traits<A>::scalar_type type;
+        };
+
+    template <class A>
+    struct
+    scalar_impl<A,false,true,false,false>
+        {
+        typedef typename vec_traits<A>::scalar_type type;
+        };
+
+    template <class A>
+    struct
+    scalar_impl<A,true,false,false,false>
+        {
+        typedef typename quat_traits<A>::scalar_type type;
+        };
+    }
+
+template <class A>
+struct
+scalar
+    {
+    typedef typename qvm_detail::scalar_impl<A>::type type;
+    };
+
+} }
+
+#endif