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maths: allow mixed type variadic min/max

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This commit is contained in:
Danny Robson 2015-01-15 14:06:17 +11:00
parent 21725e9b99
commit 79be955d28
1 changed files with 19 additions and 8 deletions
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27
maths.hpp
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@ -176,9 +176,15 @@ min (const T a)
template <typename T, typename U, typename ...Args>
constexpr typename std::common_type<T, U>::type
min (const T a , const U b , const Args &...args )
{ return min ( b < a ? b : a, args...); }
constexpr typename std::enable_if<
std::is_unsigned<typename std::decay<T>::type>::value == std::is_unsigned<typename std::decay<U>::type>::value &&
std::is_integral<typename std::decay<T>::type>::value == std::is_integral<typename std::decay<U>::type>::value,
typename std::common_type<T,U>::type
>::type
min (const T a, const U b, Args ...args)
{
return min (a < b ? a : b, std::forward<Args> (args)...);
}
//-----------------------------------------------------------------------------
@ -189,11 +195,16 @@ max (const T a)
{ return a; }
template <typename T, typename ...Args>
constexpr T
max (const T a , const T b , const Args &...args )
{ return max ( b > a ? b : a, args...); }
template <typename T, typename U, typename ...Args>
constexpr typename std::enable_if<
std::is_unsigned<typename std::decay<T>::type>::value == std::is_unsigned<typename std::decay<U>::type>::value &&
std::is_integral<typename std::decay<T>::type>::value == std::is_integral<typename std::decay<U>::type>::value,
typename std::common_type<T,U>::type
>::type
max (const T a, const U b, Args ...args)
{
return max (a > b ? a : b, std::forward<Args> (args)...);
}
//-----------------------------------------------------------------------------
template <typename T>