gmp_sqrtrem

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

gmp_sqrtremSquare 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、intstring,可以按照跟在 gmp_init() 中使用字符串并自动检测 base(即当 base 等于 0 时)相同的逻辑将其解释为数字。

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

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