(PHP 4 >= 4.0.4, PHP 5)
Returns -a.
Пример 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