/usr/include/leptonica/sudoku.h is in libleptonica-dev 1.74.1-1.
This file is owned by root:root, with mode 0o644.
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- Copyright (C) 2001 Leptonica. All rights reserved.
-
- Redistribution and use in source and binary forms, with or without
- modification, are permitted provided that the following conditions
- are met:
- 1. Redistributions of source code must retain the above copyright
- notice, this list of conditions and the following disclaimer.
- 2. Redistributions in binary form must reproduce the above
- copyright notice, this list of conditions and the following
- disclaimer in the documentation and/or other materials
- provided with the distribution.
-
- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL ANY
- CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
- EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
- OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
- NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*====================================================================*/
#ifndef SUDOKU_H_INCLUDED
#define SUDOKU_H_INCLUDED
/*!
* \file sudoku.h
*
* <pre>
* The L_Sudoku holds all the information of the current state.
*
* The input to sudokuCreate() is a file with any number of lines
* starting with '#', followed by 9 lines consisting of 9 numbers
* in each line. These have the known values and use 0 for the unknowns.
* Blank lines are ignored.
*
* The %locs array holds the indices of the unknowns, numbered
* left-to-right and top-to-bottom from 0 to 80. The array size
* is initialized to %num. %current is the index into the %locs
* array of the current guess: locs[current].
*
* The %state array is used to determine the validity of each guess.
* It is of size 81, and is initialized by setting the unknowns to 0
* and the knowns to their input values.
* </pre>
*/
struct L_Sudoku
{
l_int32 num; /*!< number of unknowns */
l_int32 *locs; /*!< location of unknowns */
l_int32 current; /*!< index into %locs of current location */
l_int32 *init; /*!< initial state, with 0 representing */
/*!< the unknowns */
l_int32 *state; /*!< present state, including inits and */
/*!< guesses of unknowns up to %current */
l_int32 nguess; /*!< shows current number of guesses */
l_int32 finished; /*!< set to 1 when solved */
l_int32 failure; /*!< set to 1 if no solution is possible */
};
typedef struct L_Sudoku L_SUDOKU;
/*! For printing out array data */
enum {
L_SUDOKU_INIT = 0,
L_SUDOKU_STATE = 1
};
#endif /* SUDOKU_H_INCLUDED */
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