#! /usr/bin/env python
#
def i4mat_min ( m, n, a ):

#*****************************************************************************80
#
## I4MAT_MIN returns the smallest value in an I4MAT.
#
#  Discussion:
#
#    An I4MAT is an M by N array of I4's.
#
#  Licensing:
#
#    This code is distributed under the GNU LGPL license.
#
#  Modified:
#
#    18 October 2014
#
#  Author:
#
#    John Burkardt
#
#  Parameters:
#
#    Input, integer M, N, the number of rows and columns.
#
#    Input, integer A(M,N), the matrix.
#
#    Output, integer VALUE, the smallest of the entries.
#
  i4_huge = 2147483647
  value = i4_huge

  for j in range ( 0, n ):
    for i in range ( 0, m ):
      value = min ( value, a[i,j] )

  return value

def i4mat_min_test ( ):

#*****************************************************************************80
#
## I4MAT_MIN_TEST tests I4MAT_MIN.
#
#  Licensing:
#
#    This code is distributed under the GNU LGPL license.
#
#  Modified:
#
#    18 October 2014
#
#  Author:
#
#    John Burkardt
#
  import platform
  from i4mat_print import i4mat_print
  from i4mat_uniform_ab import i4mat_uniform_ab

  print ( '' )
  print ( 'I4MAT_MIN_TEST' )
  print ( '  Python version: %s' % ( platform.python_version ( ) ) )
  print ( '  I4MAT_MIN returns the minimum entry.' )

  m = 5
  n = 7
  a = 0
  b = 10
  seed = 123456789
  x, seed = i4mat_uniform_ab ( m, n, a, b, seed )

  i4mat_print ( m, n, x, '  The matrix:' )
  
  x_min = i4mat_min ( m, n, x )

  print ( '' )
  print ( '  Minimum entry = %d' % ( x_min ) )
#
#  Terminate.
#
  print ( '' )
  print ( 'I4MAT_MIN_TEST' )
  print ( '  Normal_end of execution.' )
  return

if ( __name__ == '__main__' ):
  from timestamp import timestamp
  timestamp ( )
  i4mat_min_test ( )
  timestamp ( )