:sig
u64 gen_noise64(u64 index, u64 seed = 0)

:params
index : index position
seed : seed set (defaults to 0)
return value : a noise value given the 'index' and 'seed' values.

:see
>noise

:content
Generates a deterministic 64-bit-indexed noise value for the given `index` and `seed`.


:example
print(gen_noise64(1, 2) != 0 ? "noise64\n" : "zero\n");