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bitwise.slshift() function

content/flux/v0/stdlib/bitwise/slshift.md

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<!------------------------------------------------------------------------------ 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#L366-L366 Contributing to Flux: https://github.com/influxdata/flux#contributing Fluxdoc syntax: https://github.com/influxdata/flux/blob/master/docs/fluxdoc.md ------------------------------------------------------------------------------->

bitwise.slshift() shifts the bits in a left by b bits. Both a and b are integers.

Function type signature
js
(a: int, b: int) => int

{{% caption %}} For more information, see Function type signatures. {{% /caption %}}

Parameters

a

({{< req >}}) Left hand operand.

b

({{< req >}}) Number of bits to shift.

Examples

Shift bits left in an integer

js
import "bitwise"

bitwise.slshift(a: 1234, b: 2)// Returns 4936

Shift bits left in integers in a stream of tables

js
import "bitwise"
import "sampledata"

sampledata.int()
    |> map(fn: (r) => ({r with _value: bitwise.slshift(a: r._value, b: 3)}))

{{< expand-wrapper >}} {{% expand "View example input and output" %}}

Input data

_time_value*tag
2021-01-01T00:00:00Z-2t1
2021-01-01T00:00:10Z10t1
2021-01-01T00:00:20Z7t1
2021-01-01T00:00:30Z17t1
2021-01-01T00:00:40Z15t1
2021-01-01T00:00:50Z4t1
_time_value*tag
2021-01-01T00:00:00Z19t2
2021-01-01T00:00:10Z4t2
2021-01-01T00:00:20Z-3t2
2021-01-01T00:00:30Z19t2
2021-01-01T00:00:40Z13t2
2021-01-01T00:00:50Z1t2

Output data

_time_value*tag
2021-01-01T00:00:00Z-16t1
2021-01-01T00:00:10Z80t1
2021-01-01T00:00:20Z56t1
2021-01-01T00:00:30Z136t1
2021-01-01T00:00:40Z120t1
2021-01-01T00:00:50Z32t1
_time_value*tag
2021-01-01T00:00:00Z152t2
2021-01-01T00:00:10Z32t2
2021-01-01T00:00:20Z-24t2
2021-01-01T00:00:30Z152t2
2021-01-01T00:00:40Z104t2
2021-01-01T00:00:50Z8t2

{{% /expand %}} {{< /expand-wrapper >}}