# Log

Calculate a logarithm (the exponent to which a base number must be raised) to produce a given number.

## Input

Field | Definition | Type | Required |
---|---|---|---|

input | Number for which to calculate a specified logarithm. | Number | TRUE |

base | Base of the logarithm, usually 10. | Number | TRUE |

## Output

Field | Definition | Type |
---|---|---|

output | Power to which the base number must be raised to produce the value in the input field. | Number |

## Example

If input is `100`

and base is `10`

, then output is `2`

(10^2 = 100).

If input is `8`

and base is `2`

, then output is `3`

(2^3 = 8).