php man page for gmp_sqrtrem

GMP_SQRTREM(3)								 1							    GMP_SQRTREM(3)

gmp_sqrtrem - Square root with remainder

SYNOPSIS
       array gmp_sqrtrem (GMP  $a)

DESCRIPTION
	Calculate the square root of a number, with remainder.

PARAMETERS
	      o $a
		-  The	number	being  square rooted. Either a GMP number resource in PHP 5.5 and earlier, a GMP object in PHP 5.6 and later, or a
		numeric string provided 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(3) 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) . "
";
	      echo gmp_strval($sqrt2) . ", " . gmp_strval($sqrt2rem) . "
";
	      echo gmp_strval($sqrt3) . ", " . gmp_strval($sqrt3rem) . "
";
	      ?>

	      The above example will output:

	      3, 0
	      2, 3
	      1024, 0

PHP Documentation Group 													    GMP_SQRTREM(3)