docs-v2/content/flux/v0/stdlib/bitwise/slshift.md

title	description	menu	weight
bitwise.slshift() function	`bitwise.slshift()` shifts the bits in `a` left by `b` bits. Both `a` and `b` are integers.	flux_v0_ref name parent identifier bitwise.slshift bitwise bitwise/slshift	101

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

Function type signature

(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
• Shift bits left in integers in a stream of tables

Shift bits left in an integer

import "bitwise"

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

Shift bits left in integers in a stream of tables

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	-2	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	-3	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	-16	t1
2021-01-01T00:00:10Z	80	t1
2021-01-01T00:00:20Z	56	t1
2021-01-01T00:00:30Z	136	t1
2021-01-01T00:00:40Z	120	t1
2021-01-01T00:00:50Z	32	t1

_time	_value	*tag
2021-01-01T00:00:00Z	152	t2
2021-01-01T00:00:10Z	32	t2
2021-01-01T00:00:20Z	-24	t2
2021-01-01T00:00:30Z	152	t2
2021-01-01T00:00:40Z	104	t2
2021-01-01T00:00:50Z	8	t2

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