gmp_sqrtrem

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

gmp_sqrtrem — Square root with remainder

Description

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

Calculate the square root of a number, with remainder.

Parameters

num

The number being square rooted.

A GMP object, an int, or a string that can be interpreted as a number following the same logic as if the string was used in gmp_init() with automatic base detection (i.e. when base is equal to 0).

Return Values

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).

Examples

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";
?>

The above example will output:

3, 0
2, 3
1024, 0