gmp_sqrtrem
PHP function
Edit on GitHub ✎
(PHP 4 >= 4.0.4, PHP 5, PHP 7, PHP 8)
Square root with remainder
Description
gmp_sqrtrem(GMP|int|string $num): array
Calculate the square root of a number, with remainder.
Parameters
numThe number being square rooted.
Parameter
Return Values
Returns array where first element is the integer square root of num and the second is the remainder (i.e., the difference between num and the first element squared).
Errors/Exceptions
Throws a ValueError if num is negative.
Prior to PHP 8.0.0, an E_WARNING was raised instead.
Examples
gmp_sqrtrem() example
php
<?php
list($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:
output
3, 0
2, 3
1024, 0