LOG1P(3) 1 LOG1P(3) log1p - Returns log(1 + number), computed in a way that is accurate even when the value of number is close to zero SYNOPSIS float log1p (float $number) DESCRIPTION log1p(3) returns log(1 + $number) computed in a way that is accurate even when the value of $number is close to zero. log(3) might only return log(1) in this case due to lack of precision. PARAMETERS o $number - The argument to process RETURN VALUES log(1 + $number) CHANGELOG +--------+--------------------------------------------------+ |Version | | | | | | | Description | | | | +--------+--------------------------------------------------+ | 5.3.0 | | | | | | | This function is now available on all platforms | | | | +--------+--------------------------------------------------+ SEE ALSO expm1(3), log(3), log10(3). PHP Documentation Group LOG1P(3)