129 lines
3.7 KiB
Markdown
129 lines
3.7 KiB
Markdown
---
|
|
title: bitwise.uclear() function
|
|
description: >
|
|
`bitwise.uclear()` performs the bitwise operation `a AND NOT b`, with unsigned integers.
|
|
menu:
|
|
flux_0_x_ref:
|
|
name: bitwise.uclear
|
|
parent: bitwise
|
|
identifier: bitwise/uclear
|
|
weight: 101
|
|
---
|
|
|
|
<!------------------------------------------------------------------------------
|
|
|
|
IMPORTANT: This page was generated from comments in the Flux source code. Any
|
|
edits made directly to this page will be overwritten the next time the
|
|
documentation is generated.
|
|
|
|
To make updates to this documentation, update the function comments above the
|
|
function definition in the Flux source code:
|
|
|
|
https://github.com/influxdata/flux/blob/master/stdlib/bitwise/bitwise.flux#L147-L147
|
|
|
|
Contributing to Flux: https://github.com/influxdata/flux#contributing
|
|
Fluxdoc syntax: https://github.com/influxdata/flux/blob/master/docs/fluxdoc.md
|
|
|
|
------------------------------------------------------------------------------->
|
|
|
|
`bitwise.uclear()` performs the bitwise operation `a AND NOT b`, with unsigned integers.
|
|
|
|
|
|
|
|
##### Function type signature
|
|
|
|
```js
|
|
(a: uint, b: uint) => uint
|
|
```
|
|
|
|
{{% caption %}}For more information, see [Function type signatures](/flux/v0.x/function-type-signatures/).{{% /caption %}}
|
|
|
|
## Parameters
|
|
|
|
### a
|
|
({{< req >}})
|
|
Left hand operand.
|
|
|
|
|
|
|
|
### b
|
|
({{< req >}})
|
|
Bits to clear.
|
|
|
|
|
|
|
|
|
|
## Examples
|
|
|
|
- [Perform a bitwise AND NOT operation](#perform-a-bitwise-and-not-operation)
|
|
- [Perform a bitwise AND NOT operation on a stream of tables](#perform-a-bitwise-and-not-operation-on-a-stream-of-tables)
|
|
|
|
### Perform a bitwise AND NOT operation
|
|
|
|
```js
|
|
import "bitwise"
|
|
|
|
bitwise.uclear(a: uint(v: 1234), b: uint(v: 4567))// Returns 1024 (uint)
|
|
|
|
|
|
```
|
|
|
|
|
|
### Perform a bitwise AND NOT operation on a stream of tables
|
|
|
|
```js
|
|
import "bitwise"
|
|
import "sampledata"
|
|
|
|
sampledata.uint()
|
|
|> map(fn: (r) => ({r with _value: bitwise.uclear(a: r._value, b: uint(v: 3))}))
|
|
|
|
```
|
|
|
|
{{< expand-wrapper >}}
|
|
{{% expand "View example input and output" %}}
|
|
|
|
#### Input data
|
|
|
|
| _time | _value | *tag |
|
|
| -------------------- | -------------------- | ---- |
|
|
| 2021-01-01T00:00:00Z | 18446744073709551614 | t1 |
|
|
| 2021-01-01T00:00:10Z | 10 | t1 |
|
|
| 2021-01-01T00:00:20Z | 7 | t1 |
|
|
| 2021-01-01T00:00:30Z | 17 | t1 |
|
|
| 2021-01-01T00:00:40Z | 15 | t1 |
|
|
| 2021-01-01T00:00:50Z | 4 | t1 |
|
|
|
|
| _time | _value | *tag |
|
|
| -------------------- | -------------------- | ---- |
|
|
| 2021-01-01T00:00:00Z | 19 | t2 |
|
|
| 2021-01-01T00:00:10Z | 4 | t2 |
|
|
| 2021-01-01T00:00:20Z | 18446744073709551613 | t2 |
|
|
| 2021-01-01T00:00:30Z | 19 | t2 |
|
|
| 2021-01-01T00:00:40Z | 13 | t2 |
|
|
| 2021-01-01T00:00:50Z | 1 | t2 |
|
|
|
|
|
|
#### Output data
|
|
|
|
| _time | _value | *tag |
|
|
| -------------------- | -------------------- | ---- |
|
|
| 2021-01-01T00:00:00Z | 18446744073709551612 | t1 |
|
|
| 2021-01-01T00:00:10Z | 8 | t1 |
|
|
| 2021-01-01T00:00:20Z | 4 | t1 |
|
|
| 2021-01-01T00:00:30Z | 16 | t1 |
|
|
| 2021-01-01T00:00:40Z | 12 | t1 |
|
|
| 2021-01-01T00:00:50Z | 4 | t1 |
|
|
|
|
| _time | _value | *tag |
|
|
| -------------------- | -------------------- | ---- |
|
|
| 2021-01-01T00:00:00Z | 16 | t2 |
|
|
| 2021-01-01T00:00:10Z | 4 | t2 |
|
|
| 2021-01-01T00:00:20Z | 18446744073709551612 | t2 |
|
|
| 2021-01-01T00:00:30Z | 16 | t2 |
|
|
| 2021-01-01T00:00:40Z | 12 | t2 |
|
|
| 2021-01-01T00:00:50Z | 0 | t2 |
|
|
|
|
{{% /expand %}}
|
|
{{< /expand-wrapper >}}
|