#! /usr/bin/env python
#
def i4_floor ( x ) :

#*****************************************************************************80
#
## I4_FLOOR rounds an R8 down to the next I4.
#
#  Example:
#
#    X         Value
#
#   -1.1      -2
#   -1.0      -1
#   -0.9      -1
#   -0.1      -1
#    0.0       0
#    0.1       0
#    0.9       0
#    1.0       1
#    1.1       1
#    2.9       2
#    3.0       3
#    3.14159   3
#
#  Licensing:
#
#    This code is distributed under the GNU LGPL license. 
#
#  Modified:
#
#    27 September 2014
#
#  Author:
#
#    John Burkardt
#
#  Parameters:
#
#    Input, real X, the number to be rounded up.
#
#    Output, integer VALUE, the rounded value of X.
#
  from math import floor

  value = int ( floor ( x ) )

  return value

def i4_floor_test ( ):

#*****************************************************************************80
#
## I4_FLOOR_TEST tests I4_FLOOR.
#
#  Licensing:
#
#    This code is distributed under the GNU LGPL license.
#
#  Modified:
#
#    27 September 2014
#
#  Author:
#
#    John Burkardt
#
  import platform
  from r8_uniform_ab import r8_uniform_ab

  r8_lo = -100.0
  r8_hi =  100.0
  seed = 123456789

  print ( '' )
  print ( 'I4_FLOOR_TEST' )
  print ( '  Python version: %s' % ( platform.python_version ( ) ) )
  print ( '  I4_FLOOR evaluates the "floor" of a real number.' )
  print ( '' )
  print ( '      R8       I4_FLOOR(R8)' )
  print ( '' )

  for i in range ( 0, 10 ):
    r8, seed = r8_uniform_ab ( r8_lo, r8_hi, seed )
    i4 = i4_floor ( r8 )
    print ( '  %8.4f            %4d' % ( r8, i4 ) )
#
#  Terminate.
#
  print ( '' )
  print ( 'I4_FLOOR_TEST' )
  print ( '  Normal end of execution.' )
  return

if ( __name__ == '__main__' ):
  from timestamp import timestamp
  timestamp ( )
  i4_floor_test ( )
  timestamp ( )