log()

Return the natural logarithm of a value.

LOG(1)                 // returns 0
LOG(2.718281828459045) // returns 1 (ln(e) = 1)
LOG(10)                // returns 2.302585092994046
LOG(0)                 // returns null (invalid input)
LOG(-1)                // returns null (invalid input)

Parameters

$value : string|int|float

The input value (must be greater than 0).

Tags

example

use function oihana\arango\db\functions\numerics\log;

$expr = log(10);
// Produces: 'LOG(10)'

see

https://docs.arangodb.com/stable/aql/functions/numeric/#log

log2()

For the base-2 logarithm.

log10()

For the base-10 logarithm.

exp()

For the exponential function (inverse of LOG).

since

1.0.0

author

Marc Alcaraz