r.surf.random produces a raster map layer of uniform random deviates
whose range can be expressed by the user. It is essentially the same as
r.surf.gauss, but uses a linear random number generator instead.
It uses the random number generator drand48() or rand(),
depending on the user's platform.
Histogram of map generated with r.surf.random
EXAMPLE
g.region -p n=228500 s=215000 w=630000 e=645000 res=10
r.surf.random out=random min=0 max=100
# check result
r.univar random
