bcsqrt

(PHP 3, PHP 4, PHP 5)

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

Beskrivelse

string bcsqrt ( string operand [, int scale] )

Return the square root of the operand.

Parameterliste

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. You can also set the global default scale for all functions by using bcscale().

Returneringsværdier

Returns the square root as a string, or NULL if operand is negative.

Eksempler

Eksempel 1. bcsqrt() example

<?php

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

?>

Se også

bcpow()