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| author | Sverker Eriksson <[email protected]> | 2016-02-24 17:55:04 +0100 |
|---|---|---|
| committer | Sverker Eriksson <[email protected]> | 2016-02-24 17:55:04 +0100 |
| commit | 03743cd4193a2ca97f9b9a52a25e63f616e8fc07 (patch) | |
| tree | 9c1f4094a2105ec4bf19dd0d16e76b598d0e608d /lib/stdlib/src/rand.erl | |
| parent | 1b094d72ffc56069c72f17c7edd673dbbfe47e39 (diff) | |
| parent | 35739bd06776f90526006486b3f4ab7e54f7f951 (diff) | |
| download | otp-03743cd4193a2ca97f9b9a52a25e63f616e8fc07.tar.gz otp-03743cd4193a2ca97f9b9a52a25e63f616e8fc07.tar.bz2 otp-03743cd4193a2ca97f9b9a52a25e63f616e8fc07.zip | |
Merge branch 'master' into sverk/master/halt-INT_MIN
Diffstat (limited to 'lib/stdlib/src/rand.erl')
| -rw-r--r-- | lib/stdlib/src/rand.erl | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/lib/stdlib/src/rand.erl b/lib/stdlib/src/rand.erl index dc060e82d9..d455abf7b0 100644 --- a/lib/stdlib/src/rand.erl +++ b/lib/stdlib/src/rand.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2015. All Rights Reserved. +%% Copyright Ericsson AB 2015-2016. All Rights Reserved. %% %% Licensed under the Apache License, Version 2.0 (the "License"); %% you may not use this file except in compliance with the License. @@ -256,6 +256,8 @@ exs64_uniform(Max, {Alg, R}) -> %% ===================================================================== -type exsplus_state() :: nonempty_improper_list(uint58(), uint58()). +-dialyzer({no_improper_lists, exsplus_seed/1}). + exsplus_seed({A1, A2, A3}) -> {_, R1} = exsplus_next([(((A1 * 4294967197) + 1) band ?UINT58MASK)| (((A2 * 4294967231) + 1) band ?UINT58MASK)]), @@ -263,6 +265,8 @@ exsplus_seed({A1, A2, A3}) -> tl(R1)]), R2. +-dialyzer({no_improper_lists, exsplus_next/1}). + %% Advance xorshift116+ state for one step and generate 58bit unsigned integer -spec exsplus_next(exsplus_state()) -> {uint58(), exsplus_state()}. exsplus_next([S1|S0]) -> |