131 lines
3.3 KiB
Markdown
131 lines
3.3 KiB
Markdown
---
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title: bitwise.srshift() function
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description: >
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`bitwise.srshift()` shifts the bits in `a` right by `b` bits.
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Both `a` and `b` are integers.
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menu:
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flux_0_x_ref:
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name: bitwise.srshift
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parent: bitwise
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identifier: bitwise/srshift
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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/bitwise/bitwise.flux#L394-L394
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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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`bitwise.srshift()` shifts the bits in `a` right by `b` bits.
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Both `a` and `b` are integers.
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##### Function type signature
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```js
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(a: int, b: int) => int
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```
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{{% caption %}}For more information, see [Function type signatures](/flux/v0.x/function-type-signatures/).{{% /caption %}}
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## Parameters
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### a
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({{< req >}})
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Left hand operand.
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### b
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({{< req >}})
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Number of bits to shift.
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## Examples
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- [Shift bits right in an integer](#shift-bits-right-in-an-integer)
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- [Shift bits right in integers in a stream of tables](#shift-bits-right-in-integers-in-a-stream-of-tables)
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### Shift bits right in an integer
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```js
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import "bitwise"
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bitwise.srshift(a: 1234, b: 2)// Returns 308
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```
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### Shift bits right in integers in a stream of tables
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```js
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import "bitwise"
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import "sampledata"
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sampledata.int()
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|> map(fn: (r) => ({r with _value: bitwise.srshift(a: r._value, b: 3)}))
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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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| _time | _value | *tag |
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| -------------------- | ------- | ---- |
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| 2021-01-01T00:00:00Z | -2 | t1 |
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| 2021-01-01T00:00:10Z | 10 | t1 |
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| 2021-01-01T00:00:20Z | 7 | t1 |
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| 2021-01-01T00:00:30Z | 17 | t1 |
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| 2021-01-01T00:00:40Z | 15 | t1 |
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| 2021-01-01T00:00:50Z | 4 | t1 |
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| _time | _value | *tag |
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| -------------------- | ------- | ---- |
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| 2021-01-01T00:00:00Z | 19 | t2 |
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| 2021-01-01T00:00:10Z | 4 | t2 |
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| 2021-01-01T00:00:20Z | -3 | t2 |
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| 2021-01-01T00:00:30Z | 19 | t2 |
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| 2021-01-01T00:00:40Z | 13 | t2 |
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| 2021-01-01T00:00:50Z | 1 | t2 |
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#### Output data
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| _time | _value | *tag |
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| -------------------- | ------- | ---- |
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| 2021-01-01T00:00:00Z | -1 | t1 |
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| 2021-01-01T00:00:10Z | 1 | t1 |
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| 2021-01-01T00:00:20Z | 0 | t1 |
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| 2021-01-01T00:00:30Z | 2 | t1 |
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| 2021-01-01T00:00:40Z | 1 | t1 |
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| 2021-01-01T00:00:50Z | 0 | t1 |
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| _time | _value | *tag |
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| -------------------- | ------- | ---- |
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| 2021-01-01T00:00:00Z | 2 | t2 |
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| 2021-01-01T00:00:10Z | 0 | t2 |
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| 2021-01-01T00:00:20Z | -1 | t2 |
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| 2021-01-01T00:00:30Z | 2 | t2 |
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| 2021-01-01T00:00:40Z | 1 | t2 |
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| 2021-01-01T00:00:50Z | 0 | t2 |
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{{% /expand %}}
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{{< /expand-wrapper >}}
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