diff options
Diffstat (limited to 'erts')
| -rw-r--r-- | erts/emulator/test/float_SUITE.erl | 41 |
1 files changed, 35 insertions, 6 deletions
diff --git a/erts/emulator/test/float_SUITE.erl b/erts/emulator/test/float_SUITE.erl index bf0fbc70bc..46466427c5 100644 --- a/erts/emulator/test/float_SUITE.erl +++ b/erts/emulator/test/float_SUITE.erl @@ -198,13 +198,19 @@ cmp_integer(_Config) -> cmp_bignum(_Config) -> span_cmp((1 bsl 58) - 1.0),%% Smallest bignum float - %% Test I to I+1 bignum segment overflow + %% Test when the big num goes from I to I+1 in size [span_cmp((1 bsl (32*I)) - 1.0) || I <- lists:seq(2,30)], + %% Test bignum greater then largest float cmp((1 bsl (64*16)) - 1, (1 bsl (64*15)) * 1.0), + %% Test when num is much larger then float [cmp((1 bsl (32*I)) - 1, (1 bsl (32*(I-2))) * 1.0) || I <- lists:seq(3,30)], + %% Test when float is much larger than num [cmp((1 bsl (64*15)) * 1.0, (1 bsl (32*(I)))) || I <- lists:seq(1,29)], - ok. + + %% Test that all int == float works as they should + [true = 1 bsl N == (1 bsl N)*1.0 || N <- lists:seq(0, 1023)], + [true = (1 bsl N)*-1 == (1 bsl N)*-1.0 || N <- lists:seq(0, 1023)]. span_cmp(Axis) -> span_cmp(Axis, 25). @@ -212,6 +218,14 @@ span_cmp(Axis, Length) -> span_cmp(Axis, round(Axis) bsr 52, Length). span_cmp(Axis, Incr, Length) -> [span_cmp(Axis, Incr, Length, 1 bsl (1 bsl I)) || I <- lists:seq(0,6)]. +%% This function creates tests around number axis. Both <, > and == is tested +%% for both negative and positive numbers. +%% +%% Axis: The number around which to do the tests eg. (1 bsl 58) - 1.0 +%% Incr: How much to increment the test numbers inbetween each test. +%% Length: Length/2 is the number of Incr away from Axis to test on the +%% negative and positive plane. +%% Diff: How much the float and int should differ when comparing span_cmp(Axis, Incr, Length, Diff) -> [begin cmp(round(Axis*-1.0)+Diff+I*Incr,Axis*-1.0+I*Incr), @@ -227,23 +241,34 @@ cmp(Big,Small) when is_float(Big) -> io_lib:format("~f > ~p",[Big,Small])), BigLtSmall = lists:flatten( io_lib:format("~f < ~p",[Big,Small])), + BigEqSmall = lists:flatten( + io_lib:format("~f == ~p",[Big,Small])), SmallGtBig = lists:flatten( io_lib:format("~p > ~f",[Small,Big])), SmallLtBig = lists:flatten( io_lib:format("~p < ~f",[Small,Big])), - cmp(Big,Small,BigGtSmall,BigLtSmall,SmallGtBig,SmallLtBig); + SmallEqBig = lists:flatten( + io_lib:format("~p == ~f",[Small,Big])), + cmp(Big,Small,BigGtSmall,BigLtSmall,SmallGtBig,SmallLtBig, + SmallEqBig,BigEqSmall); cmp(Big,Small) when is_float(Small) -> BigGtSmall = lists:flatten( io_lib:format("~p > ~f",[Big,Small])), BigLtSmall = lists:flatten( io_lib:format("~p < ~f",[Big,Small])), + BigEqSmall = lists:flatten( + io_lib:format("~p == ~f",[Big,Small])), SmallGtBig = lists:flatten( io_lib:format("~f > ~p",[Small,Big])), SmallLtBig = lists:flatten( io_lib:format("~f < ~p",[Small,Big])), - cmp(Big,Small,BigGtSmall,BigLtSmall,SmallGtBig,SmallLtBig). + SmallEqBig = lists:flatten( + io_lib:format("~f == ~p",[Small,Big])), + cmp(Big,Small,BigGtSmall,BigLtSmall,SmallGtBig,SmallLtBig, + SmallEqBig,BigEqSmall). -cmp(Big,Small,BigGtSmall,BigLtSmall,SmallGtBig,SmallLtBig) -> +cmp(Big,Small,BigGtSmall,BigLtSmall,SmallGtBig,SmallLtBig, + SmallEqBig,BigEqSmall) -> {_,_,_,true} = {Big,Small,BigGtSmall, Big > Small}, {_,_,_,false} = {Big,Small,BigLtSmall, @@ -251,7 +276,11 @@ cmp(Big,Small,BigGtSmall,BigLtSmall,SmallGtBig,SmallLtBig) -> {_,_,_,false} = {Big,Small,SmallGtBig, Small > Big}, {_,_,_,true} = {Big,Small,SmallLtBig, - Small < Big}. + Small < Big}, + {_,_,_,false} = {Big,Small,SmallEqBig, + Small == Big}, + {_,_,_,false} = {Big,Small,BigEqSmall, + Big == Small}. id(I) -> I. |