According to Sven Hilscher:

Please check, if it is an error! [...] Test := TestNum(sqr(ReturnNum)); { the GPC compiler meant: "argument to `sqr' must be of integer, real or complex type" }

It is an error, and the same problem holds for `abs', `round', and other functions. Thanks for the report. Greetings, Peter Dipl.-Phys. Peter Gerwinski, Essen, Germany, free physicist and programmer peter.gerwinski@uni-essen.de - http://home.pages.de/~peter.gerwinski/ [970201] maintainer GNU Pascal [970714] - http://home.pages.de/~gnu-pascal/ [970125]