gmp_hamdist

(PHP 4 >= 4.0.4, PHP 5)

gmp_hamdist — Hamming distance

Description

int gmp_hamdist ( resource $a, resource $b )

Returns the hamming distance between a and b. Both operands should be non-negative.

Příklad 608. gmp_hamdist() example


<?php

$ham1 = gmp_init("1001010011", 2);

$ham2 = gmp_init("1011111100", 2);

echo gmp_hamdist($ham1, $ham2) . "\n";



/* hamdist is equivilent to: */

echo gmp_popcount(gmp_xor($ham1, $ham2)) . "\n";

?>

The printout of the above program will be:

6
6

See also gmp_popcount(), gmp_xor()

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gmp_init

gmp_gcdext

Last updated: Sat, 24 Mar 2007