Crate rand_core [−] [src]
Random number generation traits
This crate is mainly of interest to crates publishing implementations of
Rng. Other users are encouraged to use the
rand crate instead.
Rng is the core trait implemented by algorithmic pseudo-random number
generators and external random-number sources.
SeedFromRng and SeedableRng are extension traits for construction and
reseeding.
Error and Result are provided for error-handling. They are safe to use
in no_std environments.
The impls sub-module includes a few small functions to assist
implementation of Rng. Since this module is only of interest to Rng
implementors, it is not re-exported from rand.
The mock module includes a mock Rng implementation. Even though this is
only useful for testing, it is currently always built.
Modules
| impls |
Helper functions for implementing |
| mock |
Mock RNG implementations |
Structs
| Error |
Error type for cryptographic generators. Technically external generators such as the operating system or hardware generators could fail. A PRNG (algorithm) could also fail if it detects cycles, though most PRNGs have sufficiently long cycles that looping is not usually feasible. |
Traits
| Rng |
A random number generator. |
| SeedFromRng |
Support mechanism for creating random number generators seeded by other
generators. All PRNGs should support this to enable |
| SeedableRng |
A random number generator that can be explicitly seeded to produce the same stream of randomness multiple times. |
Type Definitions
| Result |
Result type (convenience type-def) |