bcpow
(PHP 3, PHP 4 , PHP 5)
bcpow --
Raise an arbitrary precision number to another
Description
string
bcpow ( string x, string y [, int scale])
Raise x to the power
y. The optional
scale can be used to set the number of
digits after the decimal place in the result.
例子 1. bcpow() example
<?php
echo bcpow(4.2, 3, 2); // 74.08
?>
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See also bcpowmod(), and
bcsqrt().