# SRFI 27 - Sources of random bits The `(srfi 27)` library provides sources of random bits. See the [SRFI document](http://srfi.schemers.org/srfi-27/srfi-27.html) for more information. - `random-integer` - `random-real` - `default-random-source` - `make-random-source` - `random-source?` - `random-source-state-ref` - `random-source-state-set!` - `random-source-randomize!` - `random-source-pseudo-randomize!` - `random-source-make-integers` - `random-source-make-reals`