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48 lines
73 KiB
Markdown
48 lines
73 KiB
Markdown
---
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title: "log"
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excerpt: "Compute the logarithm of the number with respect to an arbitrary base."
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layout: manual
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---
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Compute the logarithm of the number with respect to an arbitrary base.
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The result might not be correctly rounded owing to implementation details; `log2()` can produce more accurate results for base 2, and `log10()` can produce more accurate results for base 10.
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```js
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log(num: number, base: number) -> number
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```
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### Tags
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* `math`
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### Arguments
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| Name | Type | Description | Required |
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|----------|------|-------------|----------|
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| `num` | `number` | | Yes |
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| `base` | `number` | | Yes |
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### Returns
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`number`
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### Examples
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```js
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const exampleSketch = startSketchOn("XZ")
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|> startProfileAt([0, 0], %)
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|> line([log(100, 5), 0], %)
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|> line([5, 8], %)
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|> line([-10, 0], %)
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|> close(%)
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const example = extrude(5, exampleSketch)
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```
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