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Unroll cx_plus a bit.

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Peter Dimov
2017-03-23 19:22:42 +02:00
parent a2772da6d9
commit 72c9c49224
1 changed files with 6 additions and 0 deletions
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6
include/boost/mp11/detail/mp_count.hpp
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@@ -36,6 +36,12 @@ template<class T1, class... T> constexpr std::size_t cx_plus(T1 t1, T... t)
return t1 + cx_plus(t...); return t1 + cx_plus(t...);
} }
template<class T1, class T2, class T3, class T4, class T5, class T6, class T7, class T8, class T9, class T10, class... T>
constexpr std::size_t cx_plus(T1 t1, T2 t2, T3 t3, T4 t4, T5 t5, T6 t6, T7 t7, T8 t8, T9 t9, T10 t10, T... t)
{
return t1 + t2 + t3 + t4 + t5 + t6 + t7 + t8 + t9 + t10 + cx_plus(t...);
}
template<template<class...> class L, class... T, class V> struct mp_count_impl<L<T...>, V> template<template<class...> class L, class... T, class V> struct mp_count_impl<L<T...>, V>
{ {
using type = mp_size_t<cx_plus(std::is_same<T, V>::value...)>; using type = mp_size_t<cx_plus(std::is_same<T, V>::value...)>;