112 lines
2.4 KiB
Markdown
112 lines
2.4 KiB
Markdown
---
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title: math.hypot() function
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description: >
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`math.hypot()` returns the square root of `p*p + q*q`, taking care to avoid overflow
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and underflow.
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menu:
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flux_v0_ref:
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name: math.hypot
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parent: math
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identifier: math/hypot
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weight: 101
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---
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<!------------------------------------------------------------------------------
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IMPORTANT: This page was generated from comments in the Flux source code. Any
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edits made directly to this page will be overwritten the next time the
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documentation is generated.
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To make updates to this documentation, update the function comments above the
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function definition in the Flux source code:
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https://github.com/influxdata/flux/blob/master/stdlib/math/math.flux#L1039-L1039
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Contributing to Flux: https://github.com/influxdata/flux#contributing
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Fluxdoc syntax: https://github.com/influxdata/flux/blob/master/docs/fluxdoc.md
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------------------------------------------------------------------------------->
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`math.hypot()` returns the square root of `p*p + q*q`, taking care to avoid overflow
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and underflow.
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##### Function type signature
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```js
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(p: float, q: float) => float
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```
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{{% caption %}}
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For more information, see [Function type signatures](/flux/v0/function-type-signatures/).
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{{% /caption %}}
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## Parameters
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### p
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({{< req >}})
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p-value to use in the operation.
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### q
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({{< req >}})
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q-value to use in the operation.
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## Examples
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- [Return the hypotenuse of two values](#return-the-hypotenuse-of-two-values)
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- [Use math.hypot in map](#use-mathhypot-in-map)
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### Return the hypotenuse of two values
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```js
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import "math"
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math.hypot(p: 2.0, q: 5.0)// 5.385164807134505
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```
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### Use math.hypot in map
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```js
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import "math"
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data
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|> map(fn: (r) => ({r with _value: math.hypot(p: r.a, q: r.b)}))
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```
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{{< expand-wrapper >}}
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{{% expand "View example input and output" %}}
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#### Input data
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| triangle | a | b |
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| --------- | ----- | ---- |
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| t1 | 12.3 | 11.7 |
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| t2 | 109.6 | 23.3 |
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| t3 | 8.2 | 34.2 |
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| t4 | 33.9 | 28 |
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| t5 | 25 | 25 |
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#### Output data
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| _value | a | b | triangle |
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| ------------------ | ----- | ---- | --------- |
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| 16.975865220954127 | 12.3 | 11.7 | t1 |
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| 112.04931949815669 | 109.6 | 23.3 | t2 |
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| 35.16930479836074 | 8.2 | 34.2 | t3 |
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| 43.9682840238279 | 33.9 | 28 | t4 |
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| 35.35533905932738 | 25 | 25 | t5 |
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{{% /expand %}}
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{{< /expand-wrapper >}}
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