Purpose
Returns a normally-distributed (i.e., drawn from a Gaussian
normal distribution with mean of 0 and stddev of 1), using as
a seed either the argument provided or, if none, the time of day.
Usage
grand [seed]
Arguments
seed = INTEGER seed value for random number generator
Exit values
0 = normal completion
1 = wrong number of arguments
Example
1) Return random normal values
punaluu{lris}180
0.564412
punaluu{lris}181
-0.802072
Note that the values differ because the process number (used
by default as the random generator's seed) changed.
2) Return a random value for a given seed
punaluu{lris}183
1.08078
punaluu{lris}184
1.08078
Note that the values are the same when the same seed is used.