Funcții matematice
PHP Manual

expm1

(PHP 4 >= 4.1.0, PHP 5)

expm1 Returns exp(number) - 1, computed in a way that is accurate even when the value of number is close to zero

Descrierea

float expm1 ( float $arg )

expm1() returns the equivalent to 'exp(arg) - 1' computed in a way that is accurate even if the value of arg is near zero, a case where 'exp (arg) - 1' would be inaccurate due to subtraction of two numbers that are nearly equal.

Parametri

arg

The argument to process

Valorile întoarse

'e' to the power of arg minus one

Istoria schimbărilor

Versiunea Descriere
5.3.0 This function is now available on all platforms

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Funcții matematice
PHP Manual