#! /usr/bin/env python
#
def polar_to_c8 ( r, t ):

#*****************************************************************************80
#
## POLAR_TO_C8 converts polar form to a C8.
#
#  Licensing:
#
#    This code is distributed under the GNU LGPL license.
#
#  Modified:
#
#    12 February 2015
#
#  Author:
#
#    John Burkardt
#
#  Parameters:
#
#    Input, real R, T, the polar form.
#
#    Input, complex C, the value.
#
  import numpy as np

  c = r * ( np.cos ( t ) + 1j * np.sin ( t ) )

  return c

def polar_to_c8_test ( ):

#*****************************************************************************80
#
## POLAR_TO_C8_TEST tests POLAR_TO_C8.
#
#  Licensing:
#
#    This code is distributed under the GNU LGPL license. 
#
#  Modified:
#
#    27 February 2015
#
#  Author:
#
#    John Burkardt
#
  import numpy as np
  import platform
  from r8_uniform_01 import r8_uniform_01
  from c8_to_polar import c8_to_polar

  print ( '' )
  print ( 'POLAR_TO_C8_TEST' )
  print ( '  Python version: %s' % ( platform.python_version ( ) ) )
  print ( '  POLAR_TO_C8 computes the polar form of a C8.' )
  print ( '' )
  print ( '     R1,T1=R8_UNIFORM_01       C2=POLAR_TO_C8(R1,T1)    R3,T3=C8_TO_POLAR(C2)' )
  print ( '     ---------------------     ---------------------     ---------------------' )
  print ( '' )

  seed = 123456789

  for i in range ( 0, 10 ):
    r1, seed = r8_uniform_01 ( seed )
    t1, seed = r8_uniform_01 ( seed )
    t1 = t1 * 2.0 * np.pi
    c2 = polar_to_c8 ( r1, t1 )
    r3, t3 = c8_to_polar ( c2 )
    print ( '  (%12f,%12f)  (%12f,%12f)  (%12f,%12f)' % ( r1, t1, c2.real, c2.imag, r3, t3 ) )
#
#  Terminate.
#
  print ( '' )
  print ( 'POLAR_TO_C8_TEST:' )
  print ( '  Normal end of execution.' )
  return

if ( __name__ == '__main__' ):
  from timestamp import timestamp
  timestamp ( )
  polar_to_c8_test ( )
  timestamp ( )