PHP: fpow - Manual (original) (raw)

(PHP 8 >= 8.4.0)

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

Description

Returns the floating point result of raisingnum to the power of exponent. If num is zero and exponent is less than zero, then [INF](math.constants.php#constant.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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