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#pragma once
namespace nall {
template<typename T, enable_if_t<is_unsigned<T>::value>> alwaysinline auto upper(T value) -> T {
return value >> sizeof(T) * 4;
}
template<typename T, enable_if_t<is_unsigned<T>::value>> alwaysinline auto lower(T value) -> T {
static const T Mask = T(0) - 1 >> sizeof(T) * 4;
return value & Mask;
}
alwaysinline auto square(uintmax value) -> uintmax {
return value * value;
}
template<typename T, typename U> alwaysinline auto rol(const T& lhs, const U& rhs, enable_if_t<is_unsigned<T>::value>* = 0) -> T {
return lhs << rhs | lhs >> (sizeof(T) * 8 - rhs);
}
template<typename T, typename U> alwaysinline auto ror(const T& lhs, const U& rhs, enable_if_t<is_unsigned<T>::value>* = 0) -> T {
return lhs >> rhs | lhs << (sizeof(T) * 8 - rhs);
}
#if INTMAX_BITS >= 128
inline auto operator"" _u128(const char* s) -> uint128_t {
uint128_t p = 0;
while(*s) {
auto c = *s++;
if(c == '\'') continue;
if(c < '0' || c > '9') break;
p = (p << 3) + (p << 1) + (c - '0');
}
return p;
}
#endif
}
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