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
?>
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