log1p

PHP 4 >= 4.1.0, PHP 5, PHP 7, PHP 8
log1p - Returns log(1 + number), computed in a way that is accurate even when the value of number is close to zero

log1p( float$num ): float

log1p returns log(1 + num) computed in a way that is accurate even when the value of num is close to zero. log might only return log(1) in this case due to lack of precision.

Parameters

num

The argument to process

Return Values

log(1 + num)

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Function log1p:

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