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fpow

Description

The fpow of Math for PHP raises one number to the power of another, according to IEEE 754.

Syntax

fpow(
    float $num,
    float $exponent
): float

Parameters

num

The base to use.

exponent

The exponent.

Return

Returns a float corresponding to $num^$exponent.

Examples

1 · num exponent

<?

$num = 2.1;
$exponent = 3.4;

$return = fpow($num, $exponent);

echo $return;

12.460790720747

2 · INF

<?

$num = 0;
$exponent = -3.4;

$return = fpow($num, $exponent);

echo $return;

INF

3 · NAN

<?

$num = -2.1;
$exponent = 3.4;

$return = fpow($num, $exponent);

echo $return;

NAN

4 · **

<?

$num = 2.1;
$exponent = 3.4;

$return = $num ** $exponent;

echo $return;

12.460790720747