minus.hpp

Go to the documentation of this file.

// SPDX-License-Identifier: BSD-2-Clause
 
#ifndef pRC_CORE_FUNCTORS_MINUS_H
#define pRC_CORE_FUNCTORS_MINUS_H
 
#include <prc/core/basic/type_traits.hpp>
 
namespace pRC
{
    struct Minus
    {
        template<class X, If<True<decltype(-declval<X>())>> = 0>
        constexpr decltype(auto) operator()(X &&a) const
        {
            return -forward<X>(a);
        }
    };
}
#endif // pRC_CORE_FUNCTORS_MINUS_H