array ( 0 => 'index.php', 1 => 'PHP Manual', ), 'head' => array ( 0 => 'UTF-8', 1 => 'en', ), 'this' => array ( 0 => 'function.gmp-jacobi.php', 1 => 'gmp_jacobi', 2 => 'Jacobi symbol', ), 'up' => array ( 0 => 'ref.gmp.php', 1 => 'GMP Functions', ), 'prev' => array ( 0 => 'function.gmp-invert.php', 1 => 'gmp_invert', ), 'next' => array ( 0 => 'function.gmp-kronecker.php', 1 => 'gmp_kronecker', ), 'alternatives' => array ( ), 'source' => array ( 'lang' => 'en', 'path' => 'reference/gmp/functions/gmp-jacobi.xml', ), 'history' => array ( ), ); $setup["toc"] = $TOC; $setup["toc_deprecated"] = $TOC_DEPRECATED; $setup["parents"] = $PARENTS; manual_setup($setup); contributors($setup); ?>

gmp_jacobi

(PHP 4 >= 4.0.4, PHP 5, PHP 7, PHP 8)

gmp_jacobi — Jacobi symbol

Description

gmp_jacobi(GMP|int|string $num1, GMP|int|string $num2): int

Computes » Jacobi symbol of num1 and num2. num2 should be odd and must be positive.

Parameters

num1

A GMP object, an int, or a string that can be interpreted as a number following the same logic as if the string was used in gmp_init() with automatic base detection (i.e. when base is equal to 0).

num2

A GMP object, an int, or a string that can be interpreted as a number following the same logic as if the string was used in gmp_init() with automatic base detection (i.e. when base is equal to 0).

Should be odd and must be positive.

Return Values

A GMP object.

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

See Also