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.
Parameters
operand
The operand, as a string.
scaleThis optional parameter is used to set the number
of digits after the decimal place in the result. You can also set the global default scale
for all functions by using bcscale().
Return Values
Returns the square root as a string, or NULL if
operand is negative.
Examples
Example 1. bcsqrt() example
<?php
echo bcsqrt('2', 3); // 1.414
?>
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