bcpow

(PHP 4, PHP 5, PHP 7)

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bcpow ( string $left_operand , string $right_operand [, int $scale ] ) : string

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left_operand

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right_operand

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scale

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Example #1 bcpow() ʾ��

<?php

echo bcpow('4.2''3'2); // 74.08

?>

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Note:

bcpow() may return a result with fewer digits after the decimal point than the scale parameter would indicate. This only occurs when the result doesn't require all of the precision allowed by the scale. For example:

Example #2 bcpow() scale example

<?php
echo bcpow('5''2'2);     // prints "25", not "25.00"
?>

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  • bcpowmod() - Raise an arbitrary precision number to another, reduced by a specified modulus
  • bcsqrt() - ���⾫�����ֵĶ��η���