libcruft-util/annotation.hpp

43 lines
998 B
C++
Raw Normal View History

/*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* Copyright 2011 Danny Robson <danny@nerdcruft.net>
*/
#ifndef __UTIL_ANNOTATION_HPP
#define __UTIL_ANNOTATION_HPP
template <typename T>
constexpr inline
bool
likely (T &&t)
{ return __builtin_expect (!!t, true); }
template <typename T>
constexpr inline
bool
unlikely (T &&t)
{ return __builtin_expect (!!t, false); }
2018-08-01 13:07:58 +10:00
constexpr inline
long
expect (long val, long typical)
{
return __builtin_expect (val, typical);
}
#endif