gmp_sqrtrem

(PHP 4 >= 4.0.4, PHP 5)

gmp_sqrtrem — Square root with remainder

说明

array gmp_sqrtrem ( resource $a )

Calculate the square root of a number, with remainder.

参数

a

The number being square rooted.

It can be either a GMP number resource, or a numeric string given that it is possible to convert the latter to a number.

返回值

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

范例

Example#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";
?>

上例将输出：

3, 0
2, 3
1024, 0


	PHP5中文手册 gmp_sqrt gmp_strval GMP PHP Manual gmp_sqrtrem (PHP 4 >= 4.0.4, PHP 5) gmp_sqrtrem — Square root with remainder 说明 array gmp_sqrtrem ( resource `$a` ) Calculate the square root of a number, with remainder. 参数 `a` The number being square rooted. It can be either a GMP number resource, or a numeric string given that it is possible to convert the latter to a number. 返回值 Returns array where first element is the integer square root of `a` and the second is the remainder (i.e., the difference between `a` and the first element squared). 范例 Example#1 gmp_sqrtrem() example `<?php list($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"; ?>` 上例将输出： 3, 0 2, 3 1024, 0 gmp_sqrt gmp_strval GMP PHP Manual