GAP 4.8.9 installation with standard packages -- copy to your CoCalc project to get it
############################################################################# ## #W read.g GAP4 Package `RCWA' Stefan Kohl ## ## Read the implementation part of the package. ## ############################################################################# ReadPackage( "rcwa", "lib/rcwaaux.g" ); ReadPackage( "rcwa", "lib/rcwamap.gi" ); ReadPackage( "rcwa", "lib/rcwamono.gi" ); ReadPackage( "rcwa", "lib/rcwagrp.gi" ); ReadPackage( "rcwa", "lib/perlist.gi" ); ############################################################################# ## #E read.g . . . . . . . . . . . . . . . . . . . . . . . . . . . . ends here