<s> from __future__ import division , print_function , absolute_import <EOL> __all__ = [ '<STR_LIT>' , '<STR_LIT>' , '<STR_LIT>' , '<STR_LIT>' ] <EOL> from numpy import arange <EOL> from numpy . fft . helper import fftshift , ifftshift , fftfreq <EOL> def rfftfreq ( n , d = <NUM_LIT:1.0> ) : <EOL> """<STR_LIT>""" <EOL> if not isinstance ( n , int ) or n < <NUM_LIT:0> : <EOL> raise ValueError ( "<STR_LIT>" % n ) <EOL> return ( arange ( <NUM_LIT:1> , n + <NUM_LIT:1> , dtype = int ) // <NUM_LIT:2> ) / float ( n * d ) </s>
