Matrix.i

   1 %module Matrix
   2 %{
   3     #include "/usr/local/include/gsl/gsl_matrix.h"
   4     #include "/usr/local/include/gsl/gsl_matrix_double.h"
   5     #include "/usr/local/include/gsl/gsl_matrix_int.h"
   6     #include "/usr/local/include/gsl/gsl_matrix_complex_double.h"
   7     #include "/usr/local/include/gsl/gsl_matrix_char.h"
   8 %}
   9
  10 %include "/usr/local/include/gsl/gsl_matrix.h"
  11 %include "/usr/local/include/gsl/gsl_matrix_double.h"
  12 %include "/usr/local/include/gsl/gsl_matrix_int.h"
  13 %include "/usr/local/include/gsl/gsl_matrix_complex_double.h"
  14 %include "/usr/local/include/gsl/gsl_matrix_char.h"
  15
  16 %typemap(in) gsl_vector const * {
  17     printf("gsl_vector_view const *\n");
  18
  19 }
  20
  21 FILE *fopen(char *, char *);
  22 int fclose(FILE *);
  23
  24 %perlcode %{
  25
  26 no warnings 'redefine';
  27
  28 @EXPORT_OK = qw/fopen fclose
  29         gsl_matrix_alloc gsl_matrix_calloc gsl_matrix_alloc_from_block
  30         gsl_matrix_alloc_from_matrix gsl_vector_alloc_row_from_matrix
  31         gsl_vector_alloc_col_from_matrix gsl_matrix_free gsl_matrix_submatrix
  32         gsl_matrix_row gsl_matrix_column gsl_matrix_diagonal
  33         gsl_matrix_subdiagonal gsl_matrix_superdiagonal gsl_matrix_subrow
  34         gsl_matrix_subcolumn gsl_matrix_view_array
  35         gsl_matrix_view_array_with_tda gsl_matrix_view_vector
  36         gsl_matrix_view_vector_with_tda gsl_matrix_const_submatrix
  37         gsl_matrix_const_row gsl_matrix_const_column gsl_matrix_const_diagonal
  38         gsl_matrix_const_subdiagonal gsl_matrix_const_superdiagonal
  39         gsl_matrix_const_subrow gsl_matrix_const_subcolumn
  40         gsl_matrix_const_view_array gsl_matrix_const_view_array_with_tda
  41         gsl_matrix_const_view_vector gsl_matrix_const_view_vector_with_tda
  42         gsl_matrix_get gsl_matrix_set gsl_matrix_ptr gsl_matrix_const_ptr
  43         gsl_matrix_set_zero gsl_matrix_set_identity gsl_matrix_set_all
  44         gsl_matrix_fread gsl_matrix_fwrite gsl_matrix_fscanf gsl_matrix_fprintf
  45         gsl_matrix_memcpy gsl_matrix_swap gsl_matrix_swap_rows
  46         gsl_matrix_swap_columns gsl_matrix_swap_rowcol gsl_matrix_transpose
  47         gsl_matrix_transpose_memcpy gsl_matrix_max gsl_matrix_min
  48         gsl_matrix_minmax gsl_matrix_max_index gsl_matrix_min_index
  49         gsl_matrix_minmax_index gsl_matrix_isnull gsl_matrix_ispos
  50         gsl_matrix_isneg gsl_matrix_isnonneg gsl_matrix_add gsl_matrix_sub
  51         gsl_matrix_mul_elements gsl_matrix_div_elements gsl_matrix_scale
  52         gsl_matrix_add_constant gsl_matrix_add_diagonal
  53         gsl_matrix_char_alloc gsl_matrix_char_calloc  gsl_matrix_char_alloc_from_block
  54         gsl_matrix_char_alloc_from_matrix gsl_vector_char_alloc_row_from_matrix gsl_vector_char_alloc_col_from_matrix
  55         gsl_matrix_char_free gsl_matrix_char_submatrix
  56         gsl_matrix_char_row  gsl_matrix_char_column
  57         gsl_matrix_char_diagonal gsl_matrix_char_subdiagonal gsl_matrix_char_superdiagonal
  58         gsl_matrix_char_subrow gsl_matrix_char_subcolumn gsl_matrix_char_view_array
  59         gsl_matrix_char_view_array_with_tda gsl_matrix_char_view_vector gsl_matrix_char_view_vector_with_tda
  60         gsl_matrix_char_const_submatrix gsl_matrix_char_const_row gsl_matrix_char_const_column
  61         gsl_matrix_char_const_diagonal gsl_matrix_char_const_subdiagonal gsl_matrix_char_const_superdiagonal
  62         gsl_matrix_char_const_subrow gsl_matrix_char_const_subcolumn gsl_matrix_char_const_view_array
  63         gsl_matrix_char_const_view_array_with_tda gsl_matrix_char_const_view_vector gsl_matrix_char_const_view_vector_with_tda
  64         gsl_matrix_char_get gsl_matrix_char_set gsl_matrix_char_ptr gsl_matrix_char_const_ptr
  65         gsl_matrix_char_set_zero gsl_matrix_char_set_identity
  66         gsl_matrix_char_set_all  gsl_matrix_char_fread
  67         gsl_matrix_char_fwrite gsl_matrix_char_fscanf gsl_matrix_char_fprintf
  68         gsl_matrix_char_memcpy gsl_matrix_char_swap
  69         gsl_matrix_char_swap_rows gsl_matrix_char_swap_columns
  70         gsl_matrix_char_swap_rowcol gsl_matrix_char_transpose gsl_matrix_char_transpose_memcpy
  71         gsl_matrix_char_max gsl_matrix_char_min
  72         gsl_matrix_char_minmax  gsl_matrix_char_max_index
  73         gsl_matrix_char_min_index gsl_matrix_char_minmax_index
  74         gsl_matrix_char_isnull gsl_matrix_char_ispos gsl_matrix_char_isneg
  75         gsl_matrix_char_isnonneg  gsl_matrix_char_add
  76         gsl_matrix_char_sub gsl_matrix_char_mul_elements gsl_matrix_char_div_elements
  77         gsl_matrix_char_scale gsl_matrix_char_add_constant gsl_matrix_char_add_diagonal
  78         gsl_matrix_int_alloc gsl_matrix_int_calloc gsl_matrix_int_alloc_from_block
  79         gsl_matrix_int_alloc_from_matrix gsl_vector_int_alloc_row_from_matrix gsl_vector_int_alloc_col_from_matrix
  80         gsl_matrix_int_free gsl_matrix_int_submatrix gsl_matrix_int_row
  81         gsl_matrix_int_column gsl_matrix_int_diagonal gsl_matrix_int_subdiagonal
  82         gsl_matrix_int_superdiagonal gsl_matrix_int_subrow gsl_matrix_int_subcolumn gsl_matrix_int_view_array
  83         gsl_matrix_int_view_array_with_tda gsl_matrix_int_view_vector gsl_matrix_int_view_vector_with_tda
  84         gsl_matrix_int_const_submatrix gsl_matrix_int_const_row gsl_matrix_int_const_column
  85         gsl_matrix_int_const_diagonal gsl_matrix_int_const_subdiagonal gsl_matrix_int_const_superdiagonal
  86         gsl_matrix_int_const_subrow gsl_matrix_int_const_subcolumn gsl_matrix_int_const_view_array
  87         gsl_matrix_int_const_view_array_with_tda gsl_matrix_int_const_view_vector gsl_matrix_int_const_view_vector_with_tda
  88         gsl_matrix_int_get gsl_matrix_int_set
  89         gsl_matrix_int_ptr gsl_matrix_int_const_ptr
  90         gsl_matrix_int_set_zero gsl_matrix_int_set_identity gsl_matrix_int_set_all
  91         gsl_matrix_int_fread gsl_matrix_int_fwrite
  92         gsl_matrix_int_fscanf gsl_matrix_int_fprintf
  93         gsl_matrix_int_memcpy gsl_matrix_int_swap
  94         gsl_matrix_int_swap_rows gsl_matrix_int_swap_columns gsl_matrix_int_swap_rowcol
  95         gsl_matrix_int_transpose gsl_matrix_int_transpose_memcpy
  96         gsl_matrix_int_max gsl_matrix_int_min gsl_matrix_int_minmax
  97         gsl_matrix_int_max_index gsl_matrix_int_min_index
  98         gsl_matrix_int_minmax_index  gsl_matrix_int_isnull
  99         gsl_matrix_int_ispos gsl_matrix_int_isneg gsl_matrix_int_isnonneg
 100         gsl_matrix_int_add gsl_matrix_int_sub
 101         gsl_matrix_int_mul_elements gsl_matrix_int_div_elements gsl_matrix_int_scale
 102         gsl_matrix_int_add_constant gsl_matrix_int_add_diagonal
 103         gsl_matrix_get_row gsl_matrix_get_col gsl_matrix_set_row gsl_matrix_set_col
 104 /;
 105 %EXPORT_TAGS = ( all => [ @EXPORT_OK ], char => [gsl_matrix_char_alloc, gsl_matrix_char_calloc, gsl_matrix_char_alloc_from_block, gsl_matrix_char_alloc_from_matrix, gsl_vector_char_alloc_row_from_matrix, gsl_vector_char_alloc_col_from_matrix, gsl_matrix_char_free, gsl_matrix_char_submatrix, gsl_matrix_char_row,  gsl_matrix_char_column, gsl_matrix_char_diagonal, gsl_matrix_char_subdiagonal, gsl_matrix_char_superdiagonal, gsl_matrix_char_subrow, gsl_matrix_char_subcolumn, gsl_matrix_char_view_array, gsl_matrix_char_view_array_with_tda, gsl_matrix_char_view_vector, gsl_matrix_char_view_vector_with_tda, gsl_matrix_char_const_submatrix, gsl_matrix_char_const_row, gsl_matrix_char_const_column, gsl_matrix_char_const_diagonal, gsl_matrix_char_const_subdiagonal, gsl_matrix_char_const_superdiagonal, gsl_matrix_char_const_subrow, gsl_matrix_char_const_subcolumn, gsl_matrix_char_const_view_array, gsl_matrix_char_const_view_array_with_tda, gsl_matrix_char_const_view_vector, gsl_matrix_char_const_view_vector_with_tda, gsl_matrix_char_get, gsl_matrix_char_set, gsl_matrix_char_ptr, gsl_matrix_char_const_ptr, gsl_matrix_char_set_zero, gsl_matrix_char_set_identity, gsl_matrix_char_set_all,  gsl_matrix_char_fread, gsl_matrix_char_fwrite, gsl_matrix_char_fscanf, gsl_matrix_char_fprintf, gsl_matrix_char_memcpy, gsl_matrix_char_swap, gsl_matrix_char_swap_rows, gsl_matrix_char_swap_columns, gsl_matrix_char_swap_rowcol, gsl_matrix_char_transpose, gsl_matrix_char_transpose_memcpy, gsl_matrix_char_max, gsl_matrix_char_min, gsl_matrix_char_minmax,  gsl_matrix_char_max_index, gsl_matrix_char_min_index, gsl_matrix_char_minmax_index, gsl_matrix_char_isnull, gsl_matrix_char_ispos, gsl_matrix_char_isneg, gsl_matrix_char_isnonneg, gsl_matrix_char_add, gsl_matrix_char_sub, gsl_matrix_char_mul_elements, gsl_matrix_char_div_elements, gsl_matrix_char_scale, gsl_matrix_char_add_constant, gsl_matrix_char_add_diagonal], double => [ gsl_matrix_alloc, gsl_matrix_calloc, gsl_matrix_alloc_from_block, gsl_matrix_alloc_from_matrix, gsl_vector_alloc_row_from_matrix, gsl_vector_alloc_col_from_matrix, gsl_matrix_free, gsl_matrix_submatrix, gsl_matrix_row, gsl_matrix_column, gsl_matrix_diagonal, gsl_matrix_subdiagonal, gsl_matrix_superdiagonal, gsl_matrix_subrow, gsl_matrix_subcolumn, gsl_matrix_view_array, gsl_matrix_view_array_with_tda, gsl_matrix_view_vector, gsl_matrix_view_vector_with_tda, gsl_matrix_const_submatrix, gsl_matrix_const_row, gsl_matrix_const_column, gsl_matrix_const_diagonal, gsl_matrix_const_subdiagonal, gsl_matrix_const_superdiagonal, gsl_matrix_const_subrow, gsl_matrix_const_subcolumn, gsl_matrix_const_view_array, gsl_matrix_const_view_array_with_tda, gsl_matrix_const_view_vector, gsl_matrix_const_view_vector_with_tda, gsl_matrix_get, gsl_matrix_set, gsl_matrix_ptr, gsl_matrix_const_ptr, gsl_matrix_set_zero, gsl_matrix_set_identity, gsl_matrix_set_all, gsl_matrix_fread, gsl_matrix_fwrite, gsl_matrix_fscanf, gsl_matrix_fprintf, gsl_matrix_memcpy, gsl_matrix_swap, gsl_matrix_swap_rows, gsl_matrix_swap_columns, gsl_matrix_swap_rowcol, gsl_matrix_transpose, gsl_matrix_transpose_memcpy, gsl_matrix_max, gsl_matrix_minmax, gsl_matrix_max_index, gsl_matrix_min_index, gsl_matrix_minmax_index, gsl_matrix_isnull, gsl_matrix_ispos, gsl_matrix_isneg, gsl_matrix_isnonneg, gsl_matrix_add, gsl_matrix_mul_elements, gsl_matrix_div_elements, gsl_matrix_scale, gsl_matrix_add_constant, gsl_matrix_add_diagonal], int => [gsl_matrix_int_alloc, gsl_matrix_int_alloc_from_matrix, gsl_matrix_int_free, gsl_matrix_int_column, gsl_matrix_int_superdiagonal, gsl_matrix_int_view_array_with_tda, gsl_matrix_int_const_submatrix, gsl_matrix_int_const_diagonal, gsl_matrix_int_const_subrow, gsl_matrix_int_const_view_array_with_tda, gsl_matrix_int_get, gsl_matrix_int_ptr, gsl_matrix_int_set_zero, gsl_matrix_int_fread, gsl_matrix_int_fscanf, gsl_matrix_int_memcpy, gsl_matrix_int_swap_rows, gsl_matrix_int_transpose, gsl_matrix_int_max, gsl_matrix_int_max_index, gsl_matrix_int_minmax_index, gsl_matrix_int_ispos, gsl_matrix_int_add, gsl_matrix_int_mul_elements, gsl_matrix_int_add_constant]);
 106
 107 __END__
 108
 109 =head1 NAME
 110
 111 Math::GSL::Matrix
 112 Mathematical functions concerning Matrices
 113
 114 =head1 SYPNOPSIS
 115
 116 use Math::GSL::Matrix qw/:all/;
 117
 118 =head1 DESCRIPTION
 119
 120 Here is a list of all the functions included in this module :
 121
 122 gsl_matrix_alloc gsl_matrix_calloc gsl_matrix_alloc_from_block
 123 gsl_matrix_alloc_from_matrix gsl_vector_alloc_row_from_matrix
 124 gsl_vector_alloc_col_from_matrix gsl_matrix_free gsl_matrix_submatrix
 125 gsl_matrix_row gsl_matrix_column gsl_matrix_diagonal
 126 gsl_matrix_subdiagonal gsl_matrix_superdiagonal gsl_matrix_subrow
 127 gsl_matrix_subcolumn gsl_matrix_view_array
 128 gsl_matrix_view_array_with_tda gsl_matrix_view_vector
 129 gsl_matrix_view_vector_with_tda gsl_matrix_const_submatrix
 130 gsl_matrix_const_row gsl_matrix_const_column gsl_matrix_const_diagonal
 131 gsl_matrix_const_subdiagonal gsl_matrix_const_superdiagonal
 132 gsl_matrix_const_subrow gsl_matrix_const_subcolumn
 133 gsl_matrix_const_view_array gsl_matrix_const_view_array_with_tda
 134 gsl_matrix_const_view_vector gsl_matrix_const_view_vector_with_tda
 135 gsl_matrix_get gsl_matrix_set gsl_matrix_ptr gsl_matrix_const_ptr
 136 gsl_matrix_set_zero gsl_matrix_set_identity gsl_matrix_set_all
 137 gsl_matrix_fread gsl_matrix_fwrite gsl_matrix_fscanf gsl_matrix_fprintf
 138 gsl_matrix_memcpy gsl_matrix_swap gsl_matrix_swap_rows
 139 gsl_matrix_swap_columns gsl_matrix_swap_rowcol gsl_matrix_transpose
 140 gsl_matrix_transpose_memcpy gsl_matrix_max gsl_matrix_min
 141 gsl_matrix_minmax gsl_matrix_max_index gsl_matrix_min_index
 142 gsl_matrix_minmax_index gsl_matrix_isnull gsl_matrix_ispos
 143 gsl_matrix_isneg gsl_matrix_isnonneg gsl_matrix_add gsl_matrix_sub
 144 gsl_matrix_mul_elements gsl_matrix_div_elements gsl_matrix_scale
 145 gsl_matrix_add_constant gsl_matrix_add_diagonal
 146 gsl_matrix_char_alloc gsl_matrix_char_calloc  gsl_matrix_char_alloc_from_block
 147 gsl_matrix_char_alloc_from_matrix gsl_vector_char_alloc_row_from_matrix gsl_vector_char_alloc_col_from_matrix
 148 gsl_matrix_char_free gsl_matrix_char_submatrix
 149 gsl_matrix_char_row  gsl_matrix_char_column
 150 gsl_matrix_char_diagonal gsl_matrix_char_subdiagonal gsl_matrix_char_superdiagonal
 151 gsl_matrix_char_subrow gsl_matrix_char_subcolumn gsl_matrix_char_view_array
 152 gsl_matrix_char_view_array_with_tda gsl_matrix_char_view_vector gsl_matrix_char_view_vector_with_tda
 153 gsl_matrix_char_const_submatrix gsl_matrix_char_const_row gsl_matrix_char_const_column
 154 gsl_matrix_char_const_diagonal gsl_matrix_char_const_subdiagonal gsl_matrix_char_const_superdiagonal
 155 gsl_matrix_char_const_subrow gsl_matrix_char_const_subcolumn gsl_matrix_char_const_view_array
 156 gsl_matrix_char_const_view_array_with_tda gsl_matrix_char_const_view_vector gsl_matrix_char_const_view_vector_with_tda
 157 gsl_matrix_char_get gsl_matrix_char_set gsl_matrix_char_ptr gsl_matrix_char_const_ptr
 158 gsl_matrix_char_set_zero gsl_matrix_char_set_identity
 159 gsl_matrix_char_set_all  gsl_matrix_char_fread
 160 gsl_matrix_char_fwrite gsl_matrix_char_fscanf gsl_matrix_char_fprintf
 161 gsl_matrix_char_memcpy gsl_matrix_char_swap
 162 gsl_matrix_char_swap_rows gsl_matrix_char_swap_columns
 163 gsl_matrix_char_swap_rowcol gsl_matrix_char_transpose gsl_matrix_char_transpose_memcpy
 164 gsl_matrix_char_max gsl_matrix_char_min
 165 gsl_matrix_char_minmax  gsl_matrix_char_max_index
 166 gsl_matrix_char_min_index gsl_matrix_char_minmax_index
 167 gsl_matrix_char_isnull gsl_matrix_char_ispos gsl_matrix_char_isneg
 168 gsl_matrix_char_isnonneg  gsl_matrix_char_add
 169 gsl_matrix_char_sub gsl_matrix_char_mul_elements gsl_matrix_char_div_elements
 170 gsl_matrix_char_scale gsl_matrix_char_add_constant gsl_matrix_char_add_diagonal
 171 gsl_matrix_int_alloc gsl_matrix_int_calloc gsl_matrix_int_alloc_from_block
 172 gsl_matrix_int_alloc_from_matrix gsl_vector_int_alloc_row_from_matrix gsl_vector_int_alloc_col_from_matrix
 173 gsl_matrix_int_free gsl_matrix_int_submatrix gsl_matrix_int_row
 174 gsl_matrix_int_column gsl_matrix_int_diagonal gsl_matrix_int_subdiagonal
 175 gsl_matrix_int_superdiagonal gsl_matrix_int_subrow gsl_matrix_int_subcolumn gsl_matrix_int_view_array
 176 gsl_matrix_int_view_array_with_tda gsl_matrix_int_view_vector gsl_matrix_int_view_vector_with_tda
 177 gsl_matrix_int_const_submatrix gsl_matrix_int_const_row gsl_matrix_int_const_column
 178 gsl_matrix_int_const_diagonal gsl_matrix_int_const_subdiagonal gsl_matrix_int_const_superdiagonal
 179 gsl_matrix_int_const_subrow gsl_matrix_int_const_subcolumn gsl_matrix_int_const_view_array
 180 gsl_matrix_int_const_view_array_with_tda gsl_matrix_int_const_view_vector gsl_matrix_int_const_view_vector_with_tda
 181 gsl_matrix_int_get gsl_matrix_int_set
 182 gsl_matrix_int_ptr gsl_matrix_int_const_ptr
 183 gsl_matrix_int_set_zero gsl_matrix_int_set_identity gsl_matrix_int_set_all
 184 gsl_matrix_int_fread gsl_matrix_int_fwrite
 185 gsl_matrix_int_fscanf gsl_matrix_int_fprintf
 186 gsl_matrix_int_memcpy gsl_matrix_int_swap
 187 gsl_matrix_int_swap_rows gsl_matrix_int_swap_columns gsl_matrix_int_swap_rowcol
 188 gsl_matrix_int_transpose gsl_matrix_int_transpose_memcpy
 189 gsl_matrix_int_max gsl_matrix_int_min gsl_matrix_int_minmax
 190 gsl_matrix_int_max_index gsl_matrix_int_min_index
 191 gsl_matrix_int_minmax_index  gsl_matrix_int_isnull
 192 gsl_matrix_int_ispos gsl_matrix_int_isneg gsl_matrix_int_isnonneg
 193 gsl_matrix_int_add gsl_matrix_int_sub
 194 gsl_matrix_int_mul_elements gsl_matrix_int_div_elements gsl_matrix_int_scale
 195 gsl_matrix_int_add_constant gsl_matrix_int_add_diagonal
 196 gsl_matrix_get_row gsl_matrix_get_col gsl_matrix_set_row gsl_matrix_set_col
 197
 198 You have to add the functions you want to use inside the qw /put_funtion_here /. You can also write use Math::GSL::PowInt qw/:name_of_tag/ to use all avaible functions of the module. Other tags are also avaible, here is a complete list of all tags for this module :
 199
 200 all
 201 int
 202 double
 203 char
 204
 205 For more informations on the functions, we refer you to the GSL offcial documentation: http://www.gnu.org/software/gsl/manual/html_node/
 206 Tip : search on google: site:http://www.gnu.org/software/gsl/manual/html_node/name_of_the_function_you_want
 207
 208 =head1 EXAMPLES
 209
 210 Most of the examples from this section are perl versions of the examples there : http://www.gnu.org/software/gsl/manual/html_node/Example-programs-for-matrices.html
 211
 212
 213 The program below shows how to allocate, initialize and read from a matrix using the functions gsl_matrix_alloc, gsl_matrix_set and gsl_matrix_get.
 214
 215 use Math::GSL::Matrix qw/:all/;
 216 $m = gsl_matrix_alloc (10,3);
 217 for($i = 0; $i< 10; $i++){
 218     for($j = 0; $j<3; $j++){
 219         gsl_matrix_set($m, $i, $j, 0.23 + 100*$i + $j);
 220     }
 221 }
 222 for($i = 0; $i< 100; $i++){ # OUT OF RANGE ERROR
 223     for($j=0; $j<3; $j++){
 224         print "m($i, $j) = " . gsl_matrix_get ($m, $i, $j) . "\n";
 225     }
 226 }
 227 gsl_matrix_free ($m);
 228
 229
 230 use Math::GSL::Matrix qw/:all/;
 231
 232 $m = gsl_matrix_alloc (100, 100);
 233 $a = gsl_matrix_alloc (100, 100);
 234
 235 for($i = 0; $i < 100; $i++){
 236     for($j = 0; $j < 100; $j++){
 237         gsl_matrix_set ($m, $i, $j, 0.23 + $i + $j);
 238     }
 239 }
 240
 241 The next program shows how to write a matrix to a file.
 242
 243 $out = fopen("test.dat", "wb");
 244 gsl_matrix_fwrite ($out, $m);
 245 fclose ($out);
 246
 247 $in = fopen("test.dat", "rb");
 248 gsl_matrix_fread ($in, $a);
 249 fclose($in);
 250
 251 $k=0;
 252 for($i = 0; $i < 100; $i++){
 253     for($j = 0; $j < 100; $j++){
 254         $mij = gsl_matrix_get ($m, $i, $j);
 255         $aij = gsl_matrix_get ($a, $i, $j);
 256         if ($mij != $aij){ $k++ };
 257     }
 258 }
 259
 260 gsl_matrix_free($m);
 261 gsl_matrix_free($a);
 262
 263 print "differences = $k (should be zero)\n";
 264
 265 =head1 AUTHOR
 266
 267 Jonathan Leto <jonathan@leto.net> and Thierry Moisan <thierry.moisan@gmail.com>
 268
 269 =head1 COPYRIGHT AND LICENSE
 270
 271 Copyright (C) 2008 Jonathan Leto and Thierry Moisan
 272
 273 This program is free software; you can redistribute it and/or modify it
 274 under the same terms as Perl itself.
 275
 276 =cut
 277 %}