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# gmp_neg

(PHP 4 >= 4.0.4, PHP 5)

gmp_neg -- Negate number

## Description

resource gmp_neg ( resource a )

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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