| limit | positive number, integer or real |
| random-state | object representing random state |
RANDOM function generates random numbers. For integer argument N, result is integer between zero (including) and N (excluding). For real argument X, result is real between zero (including) and X (excluding). All generated numbers have approximately same probability. Default value for random-state is stored in *random-state* global variable.
(<= 0 (random 20) 19) => T (let ((x (random 1.0))) (or (= x 0) (< 0 x 1.0))) => T