note 106246 modified in function.gmp-sign by danbrown
| From: | danbrown@php.net | Date: | Mon, 24 Oct 2011 16:09:41 +0000 |
| Subject: | note 106246 modified in function.gmp-sign by danbrown | ||
| References: | 1 | Groups: | php.notes |
| Request: | Send a blank email to php-notes+get-184109@lists.php.net to get a copy of this message | ||
Hi !
If you don't have the GMP extension, the sign function is really simple to code.
Here an example of implementation :
<?php
function sign( $number ) {
return ( $number > 0 ) ? 1 : ( ( $number < 0 ) ? -1 : 0 );
}
echo sign( 500 ); // Return 1
echo sign( -500 ); // Return -1
echo sign( 0 ); // Return 0
?>
Thomas.
--was--
Hi !
If you don't have the GMP extension, the sign function is really simple to code.
Here an example of implementation :
function sign( $number ) {
return ( $number > 0 ) ? 1 : ( ( $number < 0 ) ? -1 : 0 );
}
echo sign( 500 ); // Return 1
echo sign( -500 ); // Return -1
echo sign( 0 ); // Return 0
Thomas.
http://php.net/manual/en/function.gmp-sign.php