Function Names
ln, logDescription
ln(x) calculates logarithm on base e
log(x) calculates logarithm on base 10.
Non-numeric values (including dates) are passed through without modifications. This is particularly suitable in combination with vectorization in order
to pass through blank contents, explanatory text, etc.
Vectorization: These functions support vectorization in the 1st function parameter.
Instead of providing a single value, you can provide a set or even a nested set which contain multiple values.
The function will then process every value and its return value contains a corresponding set containing all results.
Call as: function
Restrictions
Indirect parameter passing is disabled
Vectorization is allowed in the 1st function parameter
Parameter count
1
Parameters
| No. | Type | Description |
|---|---|---|
| 1 input |
all types set |
Value Value or set containing multiple values (vectorization) |
Return value
| Type | Description |
|---|---|
| all types set |
Result Calculated value(s) |
Examples
echo( log( 1000 ), " ", log( 0.001 ) );
echo( log( {-1, 0, 0.1, 1, 10, 100, 1000 } ) ); // Vectorization, incl. invalid values
echo( ln(1000) / ln( 10 ), " ", ln( 0.001) / ln(10) );Output
3 -3
{# Invalid Value #,# Infinitive Value #,-1,0,1,2,3}
3 -3