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

title	description	menu	weight
math.erfc() function	`math.erfc()` returns the complementary error function of `x`.	flux_v0_ref name parent identifier math.erfc math math/erfc	101

math.erfc() returns the complementary error function of x.

Function type signature

(x: float) => float

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

Parameters

x

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

Examples

• Return the complementary error function of a value
• Use math.erfc in map

Return the complementary error function of a value

import "math"

math.erfc(x: 22.6)// 3.772618913849058e-224

Use math.erfc in map

import "math"
import "sampledata"

sampledata.float()
    |> map(fn: (r) => ({r with _value: math.erfc(x: r._value)}))

{{< expand-wrapper >}} {{% expand "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	1.9979506490526588	t1
2021-01-01T00:00:10Z	0.000000000000000000000000000000000000000000000000000008381980138107252	t1
2021-01-01T00:00:20Z	0.000000000000000000000000262744434287864	t1
2021-01-01T00:00:30Z	0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000011164884065025777	t1
2021-01-01T00:00:40Z	0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000006790933091004747	t1
2021-01-01T00:00:50Z	0.0000000003729065687554446	t1

_time	_value	*tag
2021-01-01T00:00:00Z	0.00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002144458719979885	t2
2021-01-01T00:00:10Z	0.0000000000020855419929990413	t2
2021-01-01T00:00:20Z	1.9999998862727435	t2
2021-01-01T00:00:30Z	0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000005123973574678553	t2
2021-01-01T00:00:40Z	0.00000000000000000000000000000000000000000000000000000000000000000000000000000000000015161509817813512	t2
2021-01-01T00:00:50Z	0.008527511664360422	t2

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