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gmp_perfect_square	gmp_pow

	Last updated: Sat, 20 Oct 2007

gmp_popcount

(PHP 4 >= 4.0.4, PHP 5)

gmp_popcount -- Population count

Description

int gmp_popcount ( resource a )

Return the population count of a.

例子 1. gmp_popcount() example


<?php

$pop1 = gmp_init("10000101", 2); // 3 1's

echo gmp_popcount($pop1) . "\n";

$pop2 = gmp_init("11111110", 2); // 7 1's

echo gmp_popcount($pop2) . "\n";

?>

The printout of the above program will be:

3
7

gmp_perfect_square	gmp_pow

	Last updated: Sat, 20 Oct 2007

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Last updated: Thu Jul 7 19:13:47 2005 CST