ooops ! Yann Guidon wrote:
In practice it should be |x-y|/2 :
AND
/ \
/ \
/ \
/ \
********¤******¤********* (vector)
| | x y
(should be displayed in fixed font) YG ************************************************************* To unsubscribe, send an e-mail to majordomo@seul.org with unsubscribe f-cpu in the body. http://f-cpu.seul.org/