08-Oct-2025 14:14:59

r8crs_test():
  MATLAB version
  Test r8crs().

r8crs_dif2_test
  r8crs_dif2 sets up a second difference matrix
  using compressed row storage (CRS).

  Matrix order N = 5

  The R8CRS second difference matrix:

  Col:       1             2             3             4             5       
  Row
  ---
   1             2            -1             0             0             0  
   2            -1             2            -1             0             0  
   3             0            -1             2            -1             0  
   4             0             0            -1             2            -1  
   5             0             0             0            -1             2  

r8crs_indicator_test
  r8crs_indicator sets up an R8SR indicator matrix;

  Matrix order N = 5

  The R8CRS indicator matrix:

  Col:       1             2             3             4             5       
  Row
  ---
   1            11            12             0             0            15  
   2             0            22             0             0            25  
   3            31             0            33             0             0  
   4            41             0             0            44             0  
   5             0            52            53             0            55  

r8crs_mtv_test
  r8crs_mtv multiplies an R8CRS matrix transposed times a vector.

  Matrix order N = 5

  R8CRS and R8GE products:

       1:        31.8471       31.8471
       2:        21.4109       21.4109
       3:        17.0941       17.0941
       4:        26.2589       26.2589
       5:         23.799        23.799

r8crs_mv_test
  r8crs_mv multiplies an R8CRS matrix by a vector;

  Matrix order N = 5

  R8CRS and R8GE products:

       1:        21.5179       21.5179
       2:        29.9217       29.9217
       3:        44.1744       44.1744
       4:         22.378        22.378
       5:        119.998       119.998

r8crs_print_test
  r8crs_print prints a R8CRS matrix.

  Matrix order N = 5

  The R8CRS matrix:

  Col:       1             2             3             4             5       
  Row
  ---
   1            11            12             0             0            15  
   2             0            22             0             0            25  
   3            31             0            33             0             0  
   4            41             0             0            44             0  
   5             0            52            53             0            55  

r8crs_print_some_test
  r8crs_print_some prints some of a R8CRS matrix.

  Matrix order N = 5

  Rows 1:N, column 5

  Col:       5       
  Row
  ---
   1            15  
   2            25  
   3             0  
   4             0  
   5            55  

r8crs_random_test
  r8crs_random randomizes a R8SR matrix

  Matrix order N = 5

  The R8CRS random matrix:

  Col:       1             2             3             4             5       
  Row
  ---
   1      0.775899      0.424605             0             0     -0.405531  
   2             0      0.724773             0             0      0.825898  
   3      -1.22463             0       1.94071             0             0  
   4      0.636868             0             0      0.406244             0  
   5             0     -0.820622       0.17276             0      -2.50699  

r8crs_to_r8ge_test
  r8crs_to_r8ge converts an R8CRS matrix to R8GE format.

  Matrix order N = 5

  The R8CRS matrix:

  Col:       1             2             3             4             5       
  Row
  ---
   1            11            12             0             0            15  
   2             0            22             0             0            25  
   3            31             0            33             0             0  
   4            41             0             0            44             0  
   5             0            52            53             0            55  

  The R8GE matrix:

  Col:       1             2             3             4             5       
  Row
  ---
   1            11            12             0             0            15  
   2             0            22             0             0            25  
   3            31             0            33             0             0  
   4            41             0             0            44             0  
   5             0            52            53             0            55  

r8crs_zeros_test
  r8crs_zeros sets up a zero R8CRS matrix;

  Matrix order N = 5

  The R8CRS zero matrix:

  Col:       1             2             3             4             5       
  Row
  ---
   1             0             0             0             0             0  
   2             0             0             0             0             0  
   3             0             0             0             0             0  
   4             0             0             0             0             0  
   5             0             0             0             0             0  
A =

Compressed Column Sparse (rows = 5, cols = 5, nnz = 4 [16%])

  (1, 1) -> 1
  (5, 1) -> 2
  (1, 3) -> 4
  (2, 5) -> 3


r8ge_to_r8crs_test
  r8ge_to_r8crs converts a general storage (GE)
  matrix to compressed row storage (CRS).

  The R8CRS matrix:

  Col:       1             2             3             4             5       
  Row
  ---
   1             1             0             4             0             0  
   2             0             0             0             0             3  
   3             0             0             0             0             0  
   4             0             0             0             0             0  
   5             2             0             0             0             0  

r8crs_test():
  Normal end of execution.

08-Oct-2025 14:14:59