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PHP: gmp_fact - Manual
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gmp_gcd" width="11" height="7"/> <gmp_divexact
Last updated: Mon, 05 Feb 2007

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gmp_fact

(PHP 4 >= 4.0.4, PHP 5)

gmp_fact — 階乗

説明

resource gmp_fact ( int a )

a の階乗 (a!) を計算します。

例 734. gmp_fact() の例

<?php
$fact1
= gmp_fact(5); // 5 * 4 * 3 * 2 * 1
echo gmp_strval($fact1) . "\n";

$fact2 = gmp_fact(50); // 50 * 49 * 48, ... etc
echo gmp_strval($fact2) . "\n";
?>

上のプログラムの出力は以下のようになります。


120
30414093201713378043612608166064768844377641568960512000000000000

     



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gmp_gcd" width="11" height="7"/> <gmp_divexact
Last updated: Mon, 05 Feb 2007
 
 
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