PHP 8.4.0 RC4 available for testing

    fpow

    (PHP 8 >= 8.4.0)

    fpow — Raise one number to the power of another, according to IEEE 754

    Description

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

    Returns the floating point result of raising num to the power of exponent. If num is zero and exponent is less than zero, then INF is returned.

    Parameters

    num
    The base to use.
    exponent
    The exponent.

    Return Values

    Returns a float corresponding to $num$exponent.

    Examples

    Example #1 fpow() example

    <?php
    var_dump    (fpow(10, 2));
    var_dump(fpow(0, -3));
    var_dump(fpow(-1, 5.5));
    ?>

    The above example will output:

    float(100)
float(INF)
float(NAN)

    See Also

    • Exponentiation operator **
    • pow() - Exponential expression
    • fdiv() - Divides two numbers, according to IEEE 754
    • fmod() - Returns the floating point remainder (modulo) of the division of the arguments

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