gmp_sqrtrem()

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

Square root with remainder

说明

gmp_sqrtrem(GMP$a): array

Calculate the square root of a number, with remainder.

参数

$a

The number being square rooted.

可以是一个 GMP数据resouce，或一个可以转换为数值的字符串。

返回值

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

范例

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";
?>

以上例程会输出：

3, 0
2, 3
1024, 0