mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-11-27 03:54:41 +08:00
213516ef31
This commit is the result of running the gdb/copyright.py script, which automated the update of the copyright year range for all source files managed by the GDB project to be updated to include year 2023.
60 lines
1.9 KiB
C++
60 lines
1.9 KiB
C++
/* C++ implementation of a binary search.
|
|
|
|
Copyright (C) 2019-2023 Free Software Foundation, Inc.
|
|
|
|
This file is part of GDB.
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>. */
|
|
|
|
|
|
#ifndef GDBSUPPORT_GDB_BINARY_SEARCH_H
|
|
#define GDBSUPPORT_GDB_BINARY_SEARCH_H
|
|
|
|
#include <algorithm>
|
|
|
|
namespace gdb {
|
|
|
|
/* Implements a binary search using C++ iterators.
|
|
This differs from std::binary_search in that it returns an iterator for
|
|
the found element and in that the type of EL can be different from the
|
|
type of the elements in the container.
|
|
|
|
COMP is a C-style comparison function with signature:
|
|
int comp(const value_type& a, const T& b);
|
|
It should return -1, 0 or 1 if a is less than, equal to, or greater than
|
|
b, respectively.
|
|
[first, last) must be sorted.
|
|
|
|
The return value is an iterator pointing to the found element, or LAST if
|
|
no element was found. */
|
|
template<typename It, typename T, typename Comp>
|
|
It binary_search (It first, It last, T el, Comp comp)
|
|
{
|
|
auto lt = [&] (const typename std::iterator_traits<It>::value_type &a,
|
|
const T &b)
|
|
{ return comp (a, b) < 0; };
|
|
|
|
auto lb = std::lower_bound (first, last, el, lt);
|
|
if (lb != last)
|
|
{
|
|
if (comp (*lb, el) == 0)
|
|
return lb;
|
|
}
|
|
return last;
|
|
}
|
|
|
|
} /* namespace gdb */
|
|
|
|
#endif /* GDBSUPPORT_GDB_BINARY_SEARCH_H */
|