Function log1p #
Calculate the logarithm of a value+1.
For matrices, the function is evaluated element wise.
Syntax #
math.log1p(x)
math.log1p(x, base)
Parameters #
| Parameter | Type | Description |
|---|---|---|
x |
number | BigNumber | Complex | Array | Matrix | Value for which to calculate the logarithm of x+1. |
base |
number | BigNumber | Complex | Optional base for the logarithm. If not provided, the natural logarithm of x+1 is calculated. Default value: e. |
Returns #
| Type | Description |
|---|---|
| number | BigNumber | Complex | Array | Matrix | Returns the logarithm of x+1 |
Throws #
Type | Description —- | ———–
Examples #
math.log1p(2.5) // returns 1.252762968495368
math.exp(math.log1p(1.4)) // returns 2.4
math.pow(10, 4) // returns 10000
math.log1p(9999, 10) // returns 4
math.log1p(9999) / math.log(10) // returns 4
