This file documents rand and grid generators.

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FILE DESCRIPTION

  Generator files
    sprand.c       random graph generator
    spgrid.c       grid graph generator
    sphard.c       hard problem generator
    random.c       random number generator (for portability)
    
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PROGRAM PARAMETERS

  sprand
    takes five parameters, N, M, L, H, S
      * N is the number of nodes
      * M is the number of arcs
      * L is the lower bound on arc lengths
      * H is the upper bound on arc lengths
      * S is the pseudorandom number generator seed

  spgrid
    takes seven parameters, X, xL, xH, Y, yL, yH, S
      * X  is the grid length
      * xL is the lower bound on the horizontal arc length
      * xU is the upper bound on the horizontal arc length
      * Y  is the grid height
      * yL is the lower bound on the vertical arc length
      * yU is the upper bound on the vertical arc length
      * S  is the pseudorandom number generator seed

