tarjan.h

Go to the documentation of this file.

/*
Copyright (C) 2012 (c) Jostein R. Natvig <jostein natvig at gmail.com>
 
Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
of the Software, and to permit persons to whom the Software is furnished to do
so, subject to the following conditions:
 
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
 
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
*/
 
#ifndef TARJAN_H_INCLUDED
#define TARJAN_H_INCLUDED
 
#include <stddef.h>
 
#ifdef __cplusplus
extern "C" {
#endif  /* __cplusplus */
 
struct TarjanWorkSpace;
 
struct TarjanSCCResult;
 
struct TarjanComponent
{
    size_t  size;
 
    const int *vertex;
};
 
struct TarjanWorkSpace *
create_tarjan_workspace(const size_t nvert);
 
void
destroy_tarjan_workspace(struct TarjanWorkSpace *ws);
 
void
destroy_tarjan_sccresult(struct TarjanSCCResult *scc);
 
size_t
tarjan_get_numcomponents(const struct TarjanSCCResult *scc);
 
struct TarjanComponent
tarjan_get_strongcomponent(const struct TarjanSCCResult *scc,
                           const size_t                  compID);
 
struct TarjanSCCResult *
tarjan(const size_t  nv,
       const size_t *ia,
       const int    *ja);
 
struct TarjanSCCResult *
tarjan_reachable_sccs(const size_t            nv,
                      const size_t           *ia,
                      const int              *ja,
                      const size_t            nstart,
                      const int              *start_pts,
                      struct TarjanWorkSpace *ws);
 
int
tarjan_reverse_sccresult(struct TarjanSCCResult *scc);
 
#ifdef __cplusplus
}
#endif  /* __cplusplus */
 
#endif /* TARJAN_H_INCLUDED */
 
/* Local Variables:    */
/* c-basic-offset:4    */
/* End:                */