...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
#include <boost/qvm/vec_index.hpp>
namespace boost { namespace qvm { //Only enabled if: // is_vec<A>::value template <class A> typename vec_traits<A>::scalar_type vec_index_read( A const & a, int i ); } }
The i-th element of a.
i >= 0 && i < vec_traits<A>::dim.
This function uses template metaprogramming and can be used even if the optional access function vec_traits<A>::read_element_idx is not available.