---
title: math.float64bits() function
description: math.float64bits() returns the IEEE 754 binary representation of f, with the sign bit of f and the result in the same bit position.
url: https://docs.influxdata.com/flux/v0/stdlib/math/float64bits/
estimated_tokens: 1446
product: Flux
version: v0
---

# math.float64bits() function

-   Flux 0.22.0+
-   View InfluxDB support

`math.float64bits()` returns the IEEE 754 binary representation of `f`, with the sign bit of `f` and the result in the same bit position.

##### Function type signature

```js
(f: float) => uint
```

For more information, see [Function type signatures](/flux/v0/function-type-signatures/).

## Parameters

### f

(Required) Value to operate on.

## Examples

-   [Return the binary expression of a value](#return-the-binary-expression-of-a-value)
-   [Use math.float64bits in map](#use-mathfloat64bits-in-map)

### Return the binary expression of a value

```js
import "math"

math.float64bits(f: 1234.56)// 4653144467747100426

```

### Use math.float64bits in map

```js
import "sampledata"
import "math"

sampledata.float()
    |> map(fn: (r) => ({r with _value: math.float64bits(f: r._value)}))
```

[](#view-example-input-and-output)

View example input and output

#### Input data

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

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

#### Output 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 |