cosmopolitan/ctl/integral_constant.h
2024-06-28 19:09:54 -07:00

29 lines
695 B
C++

// -*-mode:c++;indent-tabs-mode:nil;c-basic-offset:4;tab-width:8;coding:utf-8-*-
// vi: set et ft=cpp ts=4 sts=4 sw=4 fenc=utf-8 :vi
#ifndef CTL_INTEGRAL_CONSTANT_H_
#define CTL_INTEGRAL_CONSTANT_H_
namespace ctl {
template<class T, T v>
struct integral_constant
{
static constexpr T value = v;
typedef T value_type;
typedef integral_constant type;
constexpr operator value_type() const noexcept
{
return value;
}
constexpr value_type operator()() const noexcept
{
return value;
}
};
typedef integral_constant<bool, true> true_type;
typedef integral_constant<bool, false> false_type;
} // namespace ctl
#endif // CTL_INTEGRAL_CONSTANT_H_