#! /usr/bin/env python
#
def r8_cscd ( degrees ):

#*****************************************************************************80
#
## R8_CSCD returns the cosecant of an angle given in degrees.
#
#  Licensing:
#
#    This code is distributed under the GNU LGPL license.
#
#  Modified:
#
#    27 July 2014
#
#  Author:
#
#    John Burkardt
#
#  Parameters:
#
#    Input, real DEGREES, the angle in degrees.
#
#    Output, real VALUE, the cosecant of the angle.
#
  import numpy as np

  radians = np.pi * ( degrees / 180.0 )

  value = 1.0 / np.sin ( radians )

  return value

def r8_cscd_test ( ):

#*****************************************************************************80
#
## R8_CSCD_TEST tests R8_CSCD.
#
#  Licensing:
#
#    This code is distributed under the GNU LGPL license. 
#
#  Modified:
#
#    12 January 2015
#
#  Author:
#
#    John Burkardt
#
  import platform

  print ( '' )
  print ( 'R8_CSCD_TEST' )
  print ( '  Python version: %s' % ( platform.python_version ( ) ) )
  print ( '  R8_CSCD computes the cosecant of an angle' )
  print ( '  given in degrees.' )
  print ( '' )
  print ( '  ANGLE    R8_CSCD(ANGLE)' )
  print ( '' )
 
  for i in range ( 0, 375, 15 ):
    angle = float ( i )
    if ( ( i % 180 ) == 0 ):
      print ( '  %8.2f    Undefined' % ( angle ) )
    else:
      print ( '  %8.2f  %14.6g' % ( angle, r8_cscd ( angle ) ) )
#
#  Terminate.
#
  print ( '' )
  print ( 'R8_CSCD_TEST' )
  print ( '  Normal end of execution.' )
  return

if ( __name__ == '__main__' ):
  from timestamp import timestamp
  timestamp ( )
  r8_cscd_test ( )
  timestamp ( )