   #PHP Manual BCMath Arbitrary Precision Mathematics Functions bcscale
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                                    bcsqrt

   (PHP 3, PHP 4 )
   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.

   Example 1. bcsqrt() example
   <?php
   echo bcsqrt(2, 3); // 1.414
   ?>

   See also bcpow().
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