Maybe this is something which should be changed in future PHP releases. Even the Windows Calcuator and my old scientific calc know that cos 90� is 0!!
Out of interest, have you tried any results using trignonometrical identities ie tan() = sin() / cos() to see if the error cancels out in the end? Also, does arc cos(0) give you 90�? "Bas Jobsen" <[EMAIL PROTECTED]> wrote in message 0201311400220T.00732@bjobsen">news:0201311400220T.00732@bjobsen... > Cause there is no exact representation of PI, you get a floatingpoint > representation of nearly zero. > > Try: > echo intval(cos(0.5*pi())); > echo printf("%.1f",cos(0.5*pi())); > > Op donderdag 31 januari 2002 13:39, schreef michael Rabbitte: > > I was wondering about the cos fuction in PHP when I try to get cos of 90 > > degrees I'm not getting 0 but some weird no. (i.e 6.28...E-17) is there > > anything I can do to get zero as my answer. P.S. I have converted my > > degrees to radians! > > Mike. -- PHP General Mailing List (http://www.php.net/) To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] To contact the list administrators, e-mail: [EMAIL PROTECTED]
