diff options
Diffstat (limited to 'src/randoms.erl')
| -rw-r--r-- | src/randoms.erl | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/src/randoms.erl b/src/randoms.erl index 52fceef4e..75bc280a2 100644 --- a/src/randoms.erl +++ b/src/randoms.erl @@ -27,14 +27,29 @@ -author('alexey@process-one.net'). --export([get_string/0]). +-export([get_string/0, uniform/0, uniform/1, bytes/1]). -export([start/0]). +-define(THRESHOLD, 16#10000000000000000). + start() -> ok. get_string() -> - R = crypto:rand_uniform(0, 16#10000000000000000), + R = crypto:rand_uniform(0, ?THRESHOLD), jlib:integer_to_binary(R). +uniform() -> + crypto:rand_uniform(0, ?THRESHOLD)/?THRESHOLD. + +uniform(N) -> + crypto:rand_uniform(0, N). + +-ifdef(STRONG_RAND_BYTES). +bytes(N) -> + crypto:strong_rand_bytes(N). +-else. +bytes(N) -> + crypto:rand_bytes(N). +-endif. |