Function deriveSeed

deriveSeed(root: number, ...path: SeedPath): number
Derive a child seed from a root seed and a path.

The result is a 32-bit integer, so it can be passed straight to createRng. Derivation is a pure function of its arguments — the same root and path give the same seed in every runtime — and near-identical paths ('drums' against 'drum', bar 1 against bar 2) give unrelated seeds: the path is hashed with FNV-1a and finished with the MurmurHash3 fmix32 avalanche step.
Parameters
- root: number
  The project seed; an integer in 0..0xffffffff.
- ...path: SeedPath
  The address to derive at; string or finite number segments.
Returns number
The derived seed, an integer in 0..0xffffffff.
Throws
If the root is not a 32-bit integer, or a segment is neither a string nor a finite number.
Example
```
import { createRng, deriveSeed } from '@libraz/libcantus';
const drums = deriveSeed(42, 'drums', 'chorus', 3);
const rng = createRng(drums); // rerolling only the drums: bump the 3
```
- Defined in src/core/random/seed.ts:48