#! /usr/bin/env python
#
def r8st_header_print ( i_min, i_max, j_min, j_max, m, n, nst ):

#*****************************************************************************80
#
## R8ST_HEADER_PRINT prints the header of an R8ST file.
#
#  Licensing:
#
#    This code is distributed under the GNU LGPL license.
#
#  Modified:
#
#    26 September 2018
#
#  Author:
#
#    John Burkardt
#
#  Parameters:
#
#    Input, integer I_MIN, I_MAX, the minimum and maximum rows.
#
#    Input, integer J_MIN, J_MAX, the minimum and maximum columns.
#
#    Input, integer M, the number of rows.
#
#    Input, integer N, the number of columns.
#
#    Input, integer NST, the number of nonzeros.
#
  print ( '' )
  print ( '  Sparse Triplet header:' )
  print ( '' )
  print ( '  Minimum row index I_MIN = %d' % ( i_min ) )
  print ( '  Maximum row index I_MAX = %d' % ( i_max ) )
  print ( '  Minimum col index J_MIN = %d' % ( j_min ) )
  print ( '  Maximum col index J_MAX = %d' % ( j_max ) )
  print ( '  Number of rows        M = %d' % ( m ) )
  print ( '  Number of columns     N = %d' % ( n ) )
  print ( '  Number of nonzeros  NST = %d' % ( nst ) )

  return

def r8st_header_print_test ( ):

#*****************************************************************************80
#
## R8ST_HEADER_PRINT_TEST tests R8ST_HEADER_PRINT.
#
#  Discussion:
#
#    The matrix is:
#
#      11  12   0   0  15
#      21  22   0   0   0
#       0   0  33   0  35
#       0   0   0  44   0
#      51   0  53   0  55
#
#  Licensing:
#
#    This code is distributed under the GNU LGPL license.
#
#  Modified:
#
#    26 September 2018
#
#  Author:
#
#    John Burkardt
#
  import numpy as np
  import platform

  m = 5
  n = 5
  nst = 11
  ast = np.array ( [ 51.0, 12.0, 11.0, 33.0, 15.0, 53.0, 55.0, 22.0, 35.0, 44.0, 21.0 ] )
  ist = np.array ( [ 5, 1, 1, 3, 1, 5, 5, 2, 3, 4, 2 ] )
  jst = np.array ( [ 1, 2, 1, 3, 5, 3, 5, 2, 5, 4, 1 ] )

  print ( '' )
  print ( 'R8ST_HEADER_PRINT_TEST' )
  print ( '  Python version: %s' % ( platform.python_version ( ) ) )
  print ( '  R8ST_HEADER_PRINT prints the header of an R8ST matrix.' )

  i_min = min ( ist )
  i_max = max ( ist )
  j_min = min ( jst )
  j_max = max ( jst )

  r8st_header_print ( i_min, i_max, j_min, j_max, m, n, nst )
#
#  Terminate.
#
  print ( '' )
  print ( 'R8ST_HEADER_PRINT_TEST:' )
  print ( '  Normal end of execution.' )
  return

if ( __name__ == '__main__' ):
  from timestamp import timestamp
  timestamp ( )
  r8st_header_print_test ( )
  timestamp ( )