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coord: add arity query function

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Danny Robson 2017-03-23 14:36:39 +11:00
parent 436df2952f
commit b67a99ee4e
1 changed files with 21 additions and 0 deletions
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21
coord/ops.hpp
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@ -87,6 +87,27 @@ namespace util {
constexpr bool
is_coord_v = is_coord<K>::value;
///////////////////////////////////////////////////////////////////////////
template <typename T>
constexpr
std::enable_if_t<is_coord_v<T>, std::size_t>
arity (void)
{
return T::dimension;
}
//-------------------------------------------------------------------------
template <typename T>
constexpr
std::enable_if_t<std::is_arithmetic<T>::value, std::size_t>
arity (void)
{
return 1;
}
///////////////////////////////////////////////////////////////////////////
// vector operators
#define ELEMENT_OP(OP) \