diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/stdlib/test/rand_SUITE.erl | 101 |
1 files changed, 80 insertions, 21 deletions
diff --git a/lib/stdlib/test/rand_SUITE.erl b/lib/stdlib/test/rand_SUITE.erl index 51bb03f572..0aa39f87aa 100644 --- a/lib/stdlib/test/rand_SUITE.erl +++ b/lib/stdlib/test/rand_SUITE.erl @@ -446,12 +446,12 @@ do_measure(_Config) -> {int, rand:uniform_s(Range, State)} end) || Algo <- Algos], %% - ct:pal("~nRNG uniform integer 2^(N-1) performance~n",[]), - RangeTwoPowFun = fun (State) -> quart_range(State) bsl 1 end, + ct:pal("~nRNG uniform integer half range performance~n",[]), + HalfRangeFun = fun (State) -> half_range(State) end, TMark2 = measure_1( random, - RangeTwoPowFun, + HalfRangeFun, undefined, fun (Range, State) -> {int, random:uniform_s(Range, State)} @@ -459,18 +459,18 @@ do_measure(_Config) -> _ = [measure_1( Algo, - RangeTwoPowFun, + HalfRangeFun, TMark2, fun (Range, State) -> {int, rand:uniform_s(Range, State)} end) || Algo <- Algos], %% - ct:pal("~nRNG uniform integer 3*2^(N-2)+1 performance~n",[]), - RangeLargeFun = fun (State) -> 3 * quart_range(State) + 1 end, + ct:pal("~nRNG uniform integer half range + 1 performance~n",[]), + HalfRangePlus1Fun = fun (State) -> half_range(State) + 1 end, TMark3 = measure_1( random, - RangeLargeFun, + HalfRangePlus1Fun, undefined, fun (Range, State) -> {int, random:uniform_s(Range, State)} @@ -478,17 +478,18 @@ do_measure(_Config) -> _ = [measure_1( Algo, - RangeLargeFun, + HalfRangePlus1Fun, TMark3, fun (Range, State) -> {int, rand:uniform_s(Range, State)} end) || Algo <- Algos], %% - ct:pal("~nRNG uniform integer 2^128 performance~n",[]), + ct:pal("~nRNG uniform integer full range - 1 performance~n",[]), + FullRangeMinus1Fun = fun (State) -> (half_range(State) bsl 1) - 1 end, TMark4 = measure_1( random, - fun (_) -> 1 bsl 128 end, + FullRangeMinus1Fun, undefined, fun (Range, State) -> {int, random:uniform_s(Range, State)} @@ -496,17 +497,18 @@ do_measure(_Config) -> _ = [measure_1( Algo, - fun (_) -> 1 bsl 128 end, + FullRangeMinus1Fun, TMark4, fun (Range, State) -> {int, rand:uniform_s(Range, State)} end) || Algo <- Algos], %% - ct:pal("~nRNG uniform integer 2^128 + 1 performance~n",[]), + ct:pal("~nRNG uniform integer full range performance~n",[]), + FullRangeFun = fun (State) -> half_range(State) bsl 1 end, TMark5 = measure_1( random, - fun (_) -> (1 bsl 128) + 1 end, + FullRangeFun, undefined, fun (Range, State) -> {int, random:uniform_s(Range, State)} @@ -514,16 +516,73 @@ do_measure(_Config) -> _ = [measure_1( Algo, - fun (_) -> (1 bsl 128) + 1 end, + FullRangeFun, TMark5, fun (Range, State) -> {int, rand:uniform_s(Range, State)} end) || Algo <- Algos], %% - ct:pal("~nRNG uniform float performance~n",[]), + ct:pal("~nRNG uniform integer full range + 1 performance~n",[]), + FullRangePlus1Fun = fun (State) -> (half_range(State) bsl 1) + 1 end, TMark6 = measure_1( random, + FullRangePlus1Fun, + undefined, + fun (Range, State) -> + {int, random:uniform_s(Range, State)} + end), + _ = + [measure_1( + Algo, + FullRangePlus1Fun, + TMark6, + fun (Range, State) -> + {int, rand:uniform_s(Range, State)} + end) || Algo <- Algos], + %% + ct:pal("~nRNG uniform integer double range performance~n",[]), + DoubleRangeFun = fun (State) -> half_range(State) bsl 2 end, + TMark7 = + measure_1( + random, + DoubleRangeFun, + undefined, + fun (Range, State) -> + {int, random:uniform_s(Range, State)} + end), + _ = + [measure_1( + Algo, + DoubleRangeFun, + TMark7, + fun (Range, State) -> + {int, rand:uniform_s(Range, State)} + end) || Algo <- Algos], + %% + ct:pal("~nRNG uniform integer double range + 1 performance~n",[]), + DoubleRangePlus1Fun = fun (State) -> (half_range(State) bsl 2) + 1 end, + TMark8 = + measure_1( + random, + DoubleRangePlus1Fun, + undefined, + fun (Range, State) -> + {int, random:uniform_s(Range, State)} + end), + _ = + [measure_1( + Algo, + DoubleRangePlus1Fun, + TMark8, + fun (Range, State) -> + {int, rand:uniform_s(Range, State)} + end) || Algo <- Algos], + %% + ct:pal("~nRNG uniform float performance~n",[]), + TMark9 = + measure_1( + random, fun (_) -> 0 end, undefined, fun (_, State) -> @@ -533,7 +592,7 @@ do_measure(_Config) -> [measure_1( Algo, fun (_) -> 0 end, - TMark6, + TMark9, fun (_, State) -> {uniform, rand:uniform_s(State)} end) || Algo <- Algos], @@ -543,7 +602,7 @@ do_measure(_Config) -> _ = [measure_1( Algo, fun (_) -> 0 end, - TMark6, + TMark9, fun (_, State) -> {normal, rand:normal_s(State)} end) || Algo <- Algos], @@ -1004,7 +1063,7 @@ range({#{max:=Max}, _}) -> Max; %% Old incorrect range range({_, _, _}) -> 51. % random -quart_range({#{bits:=Bits}, _}) -> 1 bsl (Bits - 2); -quart_range({#{max:=Max}, _}) -> (Max bsr 2) + 1; -quart_range({#{}, _}) -> 1 bsl 62; % crypto -quart_range({_, _, _}) -> 1 bsl 49. % random +half_range({#{bits:=Bits}, _}) -> 1 bsl (Bits - 1); +half_range({#{max:=Max}, _}) -> (Max bsr 1) + 1; +half_range({#{}, _}) -> 1 bsl 63; % crypto +half_range({_, _, _}) -> 1 bsl 50. % random |