#NEWLINE# def _eval_rewrite_as_fresnelc( self , z ) : #NEWLINE# #INDENT# arg = ( ( ( S . One + S . ImaginaryUnit ) * z ) / sqrt ( pi ) ) #NEWLINE# return ( ( S . One - S . ImaginaryUnit ) * ( fresnelc ( z ) - ( I * fresnels ( arg ) ) ) )