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(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

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`-
The argument to process

'e' to the power of * arg* minus one

Version | Description |
---|---|

5.3.0 | This function is now available on all platforms |