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GMP Functions
PHP Manual

# gmp_jacobi

(PHP 4 >= 4.0.4, PHP 5)

gmp_jacobi — Jacobi symbol

### Description

int gmp_jacobi ( resource `$a` , resource `$p` )

Computes » Jacobi symbol of `a` and `p` . `p` should be odd and must be positive.

### Parameters

`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.

### Return Values

A GMP number resource.

### Examples

Example#1 gmp_jacobi() example

`<?php
echo gmp_jacobi("1", "3") . "\n";
echo gmp_jacobi("2", "3") . "\n";
?>`

The above example will output:

    1
    0

gmp_invert
gmp_legendre
GMP Functions
PHP Manual