Valid callback actions. These can be passed to `seterr` or `errstate` to create callbacks when specific events occur (e.g. an operation produces `NaN`s). IGNORE: take no action. PRINT: print a warning to `stdout`. RAISE: raise an error (e.g. `InfOrNanError`). WARN: print a warning
source not stored for this graph (policy: none)
no outgoing calls
no test coverage detected