C++ named requirements: SeedSequence

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 default values as other objects of type `S`	constant
`S(ib,ie)`		Creates a seed sequence based on the 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())