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/*
* Copyright (C) the libgit2 contributors. All rights reserved.
*
* This file is part of libgit2, distributed under the GNU GPL v2 with
* a Linking Exception. For full terms see the included COPYING file.
*/
#ifndef INCLUDE_git_graph_h__
#define INCLUDE_git_graph_h__
#include "common.h"
#include "types.h"
#include "oid.h"
/**
* @file git2/graph.h
* @brief Git graph traversal routines
* @defgroup git_revwalk Git graph traversal routines
* @ingroup Git
* @{
*/
GIT_BEGIN_DECL
/**
* Count the number of unique commits between two commit objects
*
* There is no need for branches containing the commits to have any
* upstream relationship, but it helps to think of one as a branch and
* the other as its upstream, the `ahead` and `behind` values will be
* what git would report for the branches.
*
* @param ahead number of unique from commits in `upstream`
* @param behind number of unique from commits in `local`
* @param repo the repository where the commits exist
* @param local the commit for local
* @param upstream the commit for upstream
*/
GIT_EXTERN(int) git_graph_ahead_behind(size_t *ahead, size_t *behind, git_repository *repo, const git_oid *local, const git_oid *upstream);
/** @} */
GIT_END_DECL
#endif
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