# RandomBias

`import { RandomBias } from "destack:simulation/fault";`

Random bias fault.

```ds title="RandomBias"
export struct RandomBias {
    kind: "random.bias";
    bit: uint8;
    probabilityPpm: uint32;
}
```

[language/library/src/simulation/fault/fault.ds:453:460](https://github.com/destack-sh/destack/blob/main/language/library/src/simulation/fault/fault.ds#L453-L460)

## Members

### `kind: "random.bias"`

Fault discriminator.

### `bit: uint8`

Optional bit index to bias.

### `probabilityPpm: uint32`

Bias probability in parts per million.