gmp_neg

(PHP 4 >= 4.0.4, PHP 5, PHP 7)

gmp_neg — Negate number

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gmp_neg ( GMP $a ) : GMP

Returns the negative value of a number.

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a

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Returns -a, as a GMP number.

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Example #1 gmp_neg() example

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

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-1
1