PHP: gmp_perfect_square

gmp_perfect_square

(PHP 4 >= 4.0.4, PHP 5)

gmp_perfect_square -- Perfect square check

Description

bool gmp_perfect_square ( resource a )

Returns TRUE if a is a perfect square, FALSE otherwise.

例子 1. gmp_perfect_square() example


<?php

// 3 * 3, perfect square

var_dump(gmp_perfect_square("9"));



// not a perfect square

var_dump(gmp_perfect_square("7"));



// 1234567890 * 1234567890, perfect square

var_dump(gmp_perfect_square("1524157875019052100"));

?>

The printout of the above program will be:

bool(true)
bool(false)
bool(true)

gmp_or

gmp_popcount

Last updated: Mon, 16 Jul 2012


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