I've just been looking over the sections on random
numbers in n3090, and there were a few things I
found a little odd.

Why do the requirements for seed sequence include
everything in seed_seq?  I don't see why an Engine
needs to require anything except the generate
function.  Is there something I'm missing?

The seeding of subtract_with_carry_engine specifies UIntType
as the template parameter of linear_congruential_engine.
This requires that UIntType be at least 32 bits wide,
even though this requirement is not explicitly imposed
by subtract_with_carry_engine.

Random number adapter requirements states that the
equality operators return true if and only if the adaptees are
equal.  This is not correct for discard_block_engine,
since two generators also have to have equal n's to
be equal.

For seed_seq, step b of the algorithm for generate uses
a variable x.  "increment begin[x + q] by r2."  I can't
find any definition of x, so I assume from the context
that it is supposed to be k.

In Christ,
Steven Watanabe

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