Convert equality check with 'NaN' to 'isNaN' call
Reports an equality check with Float.NaN
or Double.NaN
that should be replaced with an isNaN()
check.
According to IEEE 754, equality check against NaN always returns false
, even for NaN == NaN
. Therefore, such a check is likely to be a mistake.
The quick-fix replaces comparison with isNaN()
check that uses a different comparison technique and handles NaN
values correctly.
Example:
fun check(value: Double): Boolean {
return Double.NaN == value
}
After the fix is applied:
fun check(value: Double): Boolean {
return value.isNaN()
}
- By ID
Can be used to locate inspection in e.g. Qodana configuration files, where you can quickly enable or disable it, or adjust its settings.
ConvertNaNEquality
Inspection Details | |
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By default bundled with: | |
Can be installed with plugin: | Kotlin, 243.23126-IJ |