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