zsolve/matrix.h

   1 /*
   2 4ti2 -- A software package for algebraic, geometric and combinatorial
   3 problems on linear spaces.
   4
   5 Copyright (C) 2006 4ti2 team.
   6 Main author(s): Matthias Walter.
   7
   8 This program is free software; you can redistribute it and/or
   9 modify it under the terms of the GNU General Public License
  10 as published by the Free Software Foundation; either version 2
  11 of the License, or (at your option) any later version.
  12
  13 This program is distributed in the hope that it will be useful,
  14 but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  16 GNU General Public License for more details.
  17
  18 You should have received a copy of the GNU General Public License
  19 along with this program; if not, write to the Free Software
  20 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  21 */
  22
  23 #ifndef _MATRIX_H
  24 #define _MATRIX_H
  25
  26 #include <stdio.h>
  27
  28 typedef struct matrix_t
  29 {
  30         int Width;
  31         int Height;
  32         int *Data;
  33 } matrix_t;
  34 typedef matrix_t *Matrix;
  35
  36 Matrix createMatrix(int, int);
  37 /* Allocate memory (width, height) */
  38
  39 Matrix createIdentityMatrix(int);
  40 /* Allocate memory and fill with 1's and 0's (size) */
  41
  42 void deleteMatrix(Matrix);
  43 /* Free memory (matrix)*/
  44
  45 Matrix copyMatrix(Matrix);
  46 /* Copy a matrix */
  47
  48 Matrix readMatrix(FILE *);
  49 /* Read from stream (stream) */
  50
  51 void fprintMatrix(FILE *, Matrix);
  52 /* Print to stream (stream, matrix) */
  53
  54 void printMatrix(Matrix);
  55 /* Print to stdout (matrix) */
  56
  57 void swapMatrixRows(Matrix, int, int);
  58 /* Swap rows a and b (matrix, a, b) */
  59
  60 void swapMatrixColumns(Matrix, int, int);
  61 /* Swap columns a and b (matrix, a, b) */
  62
  63 void negateMatrixColumn(Matrix, int);
  64 /* Change the sign of a complete column (matrix, column) */
  65
  66 void combineMatrixColumns(Matrix, int, int, int);
  67 /* Add a factorized sum of a column src to another column dest (matrix, dest, factor, src) */
  68
  69 #endif