Square root with remainder

gmp_sqrt
gmp_strval
GMP Functions
PHP Manual

# gmp_sqrtrem

(PHP 4 >= 4.0.4, PHP 5)

gmp_sqrtrem — Square root with remainder

### Description

array gmp_sqrtrem ( resource `$a` )

Calculate the square root of a number, with remainder.

### Parameters

`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.

### Return Values

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).

### 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

gmp_sqrt
gmp_strval
GMP Functions
PHP Manual