(PHP 4 >= 4.0.4)
Returns -a.
Example 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
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