GMP
PHP Manual

gmp_legendre

(PHP 4 >= 4.0.4, PHP 5)

gmp_legendre — Legendre symbol

说明

int gmp_legendre ( resource $a , resource $p )

Compute the » Legendre symbol of a and p . p should be odd and must be positive.

参数

a

It can be either a GMP number resource, or a numeric string given that it is possible to convert the latter to a number.

p

It can be either a GMP number resource, or a numeric string given that it is possible to convert the latter to a number.

Should be odd and must be positive.

返回值

A GMP number resource.

范例

Example#1 gmp_legendre() example

<?php
echo gmp_legendre("1""3") . "\n";
echo 
gmp_legendre("2""3") . "\n";
?>

上例将输出:

1
0


GMP
PHP Manual