C++ named requirements: SeedSequence (since C++11)

A SeedSequence is an object that produces unsigned integer values i in the range 0 ≤ i < 2³² based on a consumed range of integer data.

S is a SeedSequence type.
q is an object of S and r is a potentially constant object of S.
T is the result_type.
ib,ie are LegacyInputIterators with a value_type of unsigned integer values of at least 32 bits.
il is an std::initializer_list<T>.
rb,re are mutable LegacyRandomAccessIterators with a value_type of unsigned integer values of at least 32 bits.
ob is an LegacyOutputIterator.

Expression	Type	Notes	Complexity
`S::result_type`	T	Unsigned integer of at least 32 bits	compile-time
`S()`		Creates a seed sequence with the same initial state as other default-constructed seed sequences of type S	constant
`S(ib,ie)`		Creates a seed sequence with internal state depending on some or all supplied input bits by `[ib,ie)`	O(`ie-ib`)
`S(il)`		The same as `S(il.begin(), il.end())`
`q.generate(rb,re)`	`void`	Fills `[rb,re)` with 32-bit quantities depending on the initial supplied values and potential previous calls to generate. If `rb == re`, it does nothing.	O(`re-rb`)
`r.size()`	`size_t`	The amount of 32-bit integers copied by param.	constant
`r.param(ob)`	`void`	Copies 32-bit values to ob that would reproduce the current state of the object if passed to a constructor of S.	O(`r.size()`)