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gmp_sqrtrem

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

gmp_sqrtremSquare root with remainder

说明

array gmp_sqrtrem ( GMP $a )

Calculate the square root of a number, with remainder.

参数

a

The number being square rooted.

可以是一个 GMP 数据 resouce ,或一个可以转换为数值的字符串。

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" ;
?>

以上例程会输出:

3, 0
2, 3
1024, 0
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