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Last updated: Sat, 20 Oct 2007

bcsqrt

(PHP 3, PHP 4, PHP 5)

bcsqrt --  Get the square root of an arbitrary precision number

Description

string bcsqrt ( string operand [, int scale] )

Return the square root of the operand. The optional scale parameter sets the number of digits after the decimal place in the result.

例

例子 1. bcsqrt() example

<?php

echo bcsqrt('2', 3); // 1.414

?>

参见

bcpow().




<bcscalebcsub>
 Last updated: Sat, 20 Oct 2007
 
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