gmp_neg

Description

resource gmp_neg ( resource a )

Returns -a.

例子 1. gmp_neg() example


<?php
$neg1 = gmp_neg("1"); 
echo gmp_strval($neg1) . "\n";
$neg2 = gmp_neg("-1");
echo gmp_strval($neg2) . "\n";
?>

The printout of the above program will be:

-1
1