gmp_sqrtrem

(PHP 4 >= 4.0.4, PHP 5, PHP 7, PHP 8)

gmp_sqrtrem — Square root with remainder

说明

gmp_sqrtrem(GMP|int|string $num): array

Calculate the square root of a number, with remainder.

参数

num

The number being square rooted.

GMP 对象或 int ，或数字string。

返回值

Returns array where first element is the integer square root of num and the second is the remainder (i.e., the difference between num and the first element squared).

示例

示例 #1 gmp_sqrtrem() example

<?php
list($sqrt1, $sqrt1rem) = gmp_sqrtrem("9");
list($sqrt2, $sqrt2rem) = gmp_sqrtrem("7");
list($sqrt3, $sqrt3rem) = gmp_sqrtrem("1048576");

echo gmp_strval($sqrt1) . ", " . gmp_strval($sqrt1rem) . "\n";
echo gmp_strval($sqrt2) . ", " . gmp_strval($sqrt2rem) . "\n";
echo gmp_strval($sqrt3) . ", " . gmp_strval($sqrt3rem) . "\n";
?>

以上示例会输出：

3, 0
2, 3
1024, 0