docs-v2/content/flux/v0/stdlib/math/float64frombits.md

title	description	menu	weight
math.float64frombits() function	`math.float64frombits()` returns the floating-point number corresponding to the IEE 754 binary representation `b`, with the sign bit of `b` and the result in the same bit position.	flux_v0_ref name parent identifier math.float64frombits math math/float64frombits	101

math.float64frombits() returns the floating-point number corresponding to the IEE 754 binary representation b, with the sign bit of b and the result in the same bit position.

Function type signature

(b: uint) => float

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Parameters

b

({{< req >}}) Value to operate on.

Examples

• Convert bits into a float value
• Use math.float64frombits in map

Convert bits into a float value

import "math"

math.float64frombits(b: uint(v: 4))// 2e-323

Use math.float64frombits in map

import "math"

data
    |> map(fn: (r) => ({r with _value: math.float64frombits(b: r._value)}))

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Input data

_time	_value	*tag
2021-01-01T00:00:00Z	13835463379248627057	t1
2021-01-01T00:00:10Z	4622337031546119127	t1
2021-01-01T00:00:20Z	4619961382742681190	t1
2021-01-01T00:00:30Z	4625627474023866696	t1
2021-01-01T00:00:40Z	4624763345845364982	t1
2021-01-01T00:00:50Z	4616673755014700728	t1

_time	_value	*tag
2021-01-01T00:00:00Z	4626280495969835418	t2
2021-01-01T00:00:10Z	4617281740964395745	t2
2021-01-01T00:00:20Z	13838998704956112896	t2
2021-01-01T00:00:30Z	4626257977971698565	t2
2021-01-01T00:00:40Z	4623992104409177784	t2
2021-01-01T00:00:50Z	4611055514479556035	t2

Output data

_time	_value	*tag
2021-01-01T00:00:00Z	-2.18	t1
2021-01-01T00:00:10Z	10.92	t1
2021-01-01T00:00:20Z	7.35	t1
2021-01-01T00:00:30Z	17.53	t1
2021-01-01T00:00:40Z	15.23	t1
2021-01-01T00:00:50Z	4.43	t1

_time	_value	*tag
2021-01-01T00:00:00Z	19.85	t2
2021-01-01T00:00:10Z	4.97	t2
2021-01-01T00:00:20Z	-3.75	t2
2021-01-01T00:00:30Z	19.77	t2
2021-01-01T00:00:40Z	13.86	t2
2021-01-01T00:00:50Z	1.86	t2

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