Hi, I have another question: how can I extract only the integral (or fractional) part of a number? ie, how to get "3" and "0.141593" from "3.141593"? -- Common sense is the collection of prejudices acquired by age eighteen. -- Albert Einstein Eduardo M Kalinowski (ekalin@iname.com) http://move.to/hpkb http://cami-ufpr.hpg.com.br - To UNSUBSCRIBE, email to ginac-list@ginac.de with a subject of "unsubscribe".