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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.

Example 1. 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

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br />$check_res = (gmp_strval($g) == gmp_strval($eq_res));

if ($check_gcd && $check_res) {
    $fmt = "Solution: %d*%d + %d*%d = %d\n";
    printf($fmt, gmp_strval($a), gmp_strval($r['s']), gmp_strval($b),
    gmp_strval($r['t']), gmp_strval($r['g']));
} else {
    echo "Error while solving the equation\n";
}

// output: Solution: 12*2 + 21*-1 = 3
?>