bcscale

bcsub

BC Math Функции

PHP Manual

bcsqrt

(PHP 4, PHP 5)

bcsqrt — Get the square root of an arbitrary precision number

Описание

string bcsqrt ( string $operand [, int $scale ] )

Return the square root of the operand .

Список параметров

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().

Возвращаемые значения

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

Примеры

Пример #1 bcsqrt() example

<?php

echo bcsqrt('2', 3); // 1.414

?>

Смотрите также

• bcpow()

bcscale

bcsub

BC Math Функции

PHP Manual