bcsqrt
bcsqrt
(PHP 4, PHP 5, PHP 7)
bcsqrt — Get the square root of an arbitrary precision number
Description
string bcsqrt ( string $operand [, int $scale = 0 ] )
Return the square root of the operand.
Parameters
-
operand -
The operand, as a string.
-
scale -
This optional parameter is used to set the number of digits after the decimal place in the result. If omitted, it will default to the scale set globally with the bcscale() function, or fallback to 0 if this has not been set.
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
?> See Also
- bcpow() - Raise an arbitrary precision number to another
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Licensed under the Creative Commons Attribution License v3.0 or later.
https://secure.php.net/manual/en/function.bcsqrt.php
