math.isNaN() function
math.isNaN() reports whether f is an IEEE 754 “not-a-number” value.
Function type signature
(f: float) => bool
For more information, see Function type signatures.
Parameters
f
(Required) Value to operate on.
Examples
Check if a value is a NaN float value
import "math"
math.isNaN(f: 12.345)// false
Use math.isNaN in map
import "math"
data
|> map(fn: (r) => ({r with _value: math.isNaN(f: r._value)}))
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