Search Results
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
Definition and Usage The log1p () function returns log (1+number), computed in a way that is accurate even when the value of number is close to zero.
The log1p () function in PHP returns log (1+number), computed in a way that is accurate even when the value of number is close to zero. This function is particularly useful for mathematical calculations involving logarithms of values near zero, where direct calculation of log (1+x) might lose precision.
Apr 28, 2025 · The log1p () is an inbuilt PHP function that returns log (1+number), & when the value of the number is close to zero, then it will compute the way that will provide the accurate result.
Execute log1p Online. Info and examples on log1p PHP Function from Mathematical Functions - Mathematical Extensions
Example 3: Calculating Natural Logarithm for Positive and Negative Numbers The log1p () function calculates the natural logarithm of 1 plus the given input. It’s particularly useful for numbers close to zero to avoid precision loss. Here's an example:
log1p () retourne log (1 + num) calculé de telle sorte qu'il sera précis même si la valeur de num est proche de 0. log () ne peut retourner que log (1) dans ce cas par manque de précision.
