#!/usr/bin/env python def c8_le_l1 ( c1, c2 ): #*****************************************************************************80 # ## C8_LE_L1 := C1 <= C1 for C8's, and the L1 norm. # # Discussion: # # The L1 norm can be defined here as: # # C8_NORM_L1(C) = abs ( real (C) ) + abs ( imag (C) ) # # Licensing: # # This code is distributed under the GNU LGPL license. # # Modified: # # 19 February 2015 # # Author: # # John Burkardt # # Parameters: # # Input, complex C1, C2, the values to be compared. # # Output, boolean VALUE, is TRUE if C1 <= C2. # from c8_imag import c8_imag from c8_real import c8_real if ( abs ( c8_real ( c1 ) ) + abs ( c8_imag ( c1 ) ) \ <= abs ( c8_real ( c2 ) ) + abs ( c8_imag ( c2 ) ) ) : value = True else: value = False return value def c8_le_l1_test ( ): #*****************************************************************************80 # ## C8_LE_L1_TEST tests C8_LE_L1. # # Licensing: # # This code is distributed under the GNU LGPL license. # # Modified: # # 19 February 2015 # # Author: # # John Burkardt # from c8_uniform_01 import c8_uniform_01 print '' print 'C8_LE_L1_TEST' print ' C8_LE_L1 evalues (C1 <= C2) using the L1 norm.' print '' print ' C1=C8_UNIFORM_01 C2=C8_UNIFORM_01 L3=C8_LE_L1(C1,C2)' print ' --------------------- --------------------- ---------------------' print '' seed = 123456789 for i in range ( 0, 10 ): c1, seed = c8_uniform_01 ( seed ) c2, seed = c8_uniform_01 ( seed ) l3 = c8_le_l1 ( c1, c2 ) print ' (%12f,%12f) (%12f,%12f) %s' \ % ( c1.real, c1.imag, c2.real, c2.imag, l3 ) print '' print 'C8_LE_L1_TEST:' print ' Normal end of execution.' return if ( __name__ == '__main__' ): from timestamp import timestamp timestamp ( ) c8_le_l1_test ( ) timestamp ( )