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bcpowmod> <bcmul
Last updated: Sun, 25 Nov 2007

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bcpow

(PHP 4, PHP 5)

bcpow — Umocniť číslo s ľubovoľnou presnosťou na iné

Popis

string bcpow ( string $x , string $y [, int $scale ] )

Umocní x na y . Voliteľný scale sa môže použiť na nastavenie počtu číslic za desatinou čiarkou vo výsledku.

Example#1 bcpow() príklad

<?php

echo bcpow(4.232); // 74.08

?>

Tiež pozri bcpowmod() a bcsqrt().



add a note add a note User Contributed Notes
bcpow
11-Feb-2005 01:58
Well, if bcpow has limits, then this should work:
<?php
function bcpow_($num, $power) {
   
$awnser = "1";
    while (
$power) {
       
$awnser = bcmul($awnser, $num, 100);
       
$power = bcsub($power, "1");
    }
    return
rtrim($awnser, '0.');
}
?>
Just that $power cannot have decimal digits in it.
Michael Bailey (jinxidoru at byu dot net)
09-Aug-2004 05:42
bcpow() only supports exponents less than or equal to 2^31-1.  Also, bcpow() does not support decimal numbers.  If you have scale set to 0, then the exponent is converted to an interger; otherwise an error is generated.

--
Michael Bailey
http://www.jinxidoru.com

bcpowmod> <bcmul
Last updated: Sun, 25 Nov 2007
 
 
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