Re: Help: Get the value of pi up to 200+ digits?

Dear Jordan, I know what you mean. But you may try this one and you will know: <?php ini_set('precision',200); echo pi(); ?> the result is the same as 16!!! So that's why I ask this question! I am not stupid like that! Please help, thx! "Jordan Miller" <jmil@hymiegladstone.com> wrote:534D8D52-751D-45B6-9B49-DD9FA136C727@hymiegladstone.com... > http://us3.php.net/manual/en/ini.core.php#ini.precision > > precision sets the number of significant digits, *NOT* the number of > digits displayed after the decimal point. > > If you want to get pi out to 16 decimal places you need a precision of > *17* because the beginning 3 is a significant digit. > > Your code does exactly this, displaying pi with 15 decimal places. > > Jordan > > > > On Sep 1, 2005, at 8:06 AM, Wong HoWang wrote: > >> Dear all, >> >> I'm trying to do like this but failed: >> >> <?php >> ini_set('precision',16); >> echo pi(); >> ?> >> >> How can I get more digits after . ? >> >> Can anyone help? Thx! >> >> -- >> PHP General Mailing List (http://www.php.net/) >> To unsubscribe, visit: http://www.php.net/unsub.php >> >> >> >>