PHP 8.4.0 RC4 available for testing

fpow

(PHP 8 >= 8.4.0)

fpowRaise one number to the power of another, according to IEEE 754

Опис

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.

Параметри

num
The base to use.
exponent
The exponent.

Значення, що повертаються

Returns a float corresponding to $num$exponent.

Приклади

Приклад #1 fpow() example

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

Поданий вище приклад виведе:

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

Прогляньте також

  • 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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