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34 lines
568 B
Plaintext
34 lines
568 B
Plaintext
---
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page_title: log - Functions - Configuration Language
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description: The log function returns the logarithm of a given number in a given base.
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---
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# `log` Function
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`log` returns the logarithm of a given number in a given base.
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```hcl
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log(number, base)
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```
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## Examples
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```shell-session
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> log(50, 10)
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1.6989700043360185
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> log(16, 2)
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4
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```
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`log` and `ceil` can be used together to find the minimum number of binary
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digits required to represent a given number of distinct values:
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```shell-session
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> ceil(log(15, 2))
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4
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> ceil(log(16, 2))
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4
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> ceil(log(17, 2))
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5
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```
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