mersenne_twister_engine::seed
Seeds the engine.
void seed(result_type x0 = default_seed);
void seed(seed_seq& seq);
Parameters
x0
The seed value.seq
The object of type seed_seq that supplies the randomized seed.
Remarks
Precondition: 0 < x0
The first seed function sets the oldest historical value h[0] to x0 mod 2W, then iteratively sets each successive historical value h[i] to (i + F * (h[i - 1] >> (W - 2))) mod 2W, for i ranging from 1 to N - 1.
The second seed function sets the N historical values beginning with h[0] as follows:
k is the number of unsigned long integers needed to supply all the bits in a UIntType integer (at least 1).
a is an array of N * k elements of type UIntType.
a is initialized by calling seq.generate(&a[0], &a[N * k]).
Each h[i] is composed by packing the k elements beginning at a[i * k], which supplies the lowest-order bits.
Requirements
Header: <random>
Namespace: std