Uniformly distributed random numbers and matrices.

  RAND(N) is an N-by-N matrix with random entries, ordinarily

  chosen from a uniform distribution on the interval (0.0,1.0).

  RAND(M,N) or RAND([M,N]) is an M-by-N matrix with random entries.

  RAND(SIZE281GDAB(A)) is the same size as A.

  RAND with no arguments is a scalar whose value changes each time

  it is referenced.



  RAND('seed') returns the current seed of the uniform generator.

  RAND('seed',s) sets the uniform generator seed to s.

  RAND('seed',0) resets the seed its startup value.

  RAND('seed',sum(100*clock)) sets it to a different value each time.



  By default, RAND samples a uniform distribution.  The function

  RANDNBWG063 generates normally distributed random matrices.

  RAND and RANDNBWG063 have separate generators, each with its own seed.



  Previous versions of MATLAB allowed RAND('normal') to switch

  the prevailing distribution to normal, RAND('uniform') to switch

  back to uniform distribution, and RAND('dist') to return a string

  containing the prevailing distribution, either 'uniform' or 'normal'.

  MATLAB Version 4.0 continues to allow this switch, but

  issues a warning message discouraging its use.