bcsqrt
(PHP 3, PHP 4, PHP 5)
bcsqrt --
Get the square root of an arbitrary precision number
Description
string
bcsqrt
( string operand [, int scale] )
Return the square root of the
operand
.
The optional
scale
parameter sets the
number of digits after the decimal place in the result.
范例
例子 1.
bcsqrt()
example
<?php
echo
bcsqrt
(
'2'
,
3
);
// 1.414
?>
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