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-rw-r--r--erts/emulator/test/num_bif_SUITE.erl551
1 files changed, 332 insertions, 219 deletions
diff --git a/erts/emulator/test/num_bif_SUITE.erl b/erts/emulator/test/num_bif_SUITE.erl
index c625e655ce..b92a0e2059 100644
--- a/erts/emulator/test/num_bif_SUITE.erl
+++ b/erts/emulator/test/num_bif_SUITE.erl
@@ -31,24 +31,28 @@
%% list_to_integer/1
%% round/1
%% trunc/1
-
--export([all/0, suite/0,groups/0,init_per_suite/1, end_per_suite/1,
- init_per_group/2,end_per_group/2, t_abs/1, t_float/1,
- t_float_to_list/1, t_integer_to_list/1,
- t_list_to_integer/1,
- t_list_to_float_safe/1, t_list_to_float_risky/1,
- t_round/1, t_trunc/1]).
+%% integer_to_binary/1
+%% integer_to_binary/2
+%% binary_to_integer/1
+
+-export([all/0, suite/0, groups/0, init_per_suite/1, end_per_suite/1,
+ init_per_group/2, end_per_group/2, t_abs/1, t_float/1,
+ t_float_to_string/1, t_integer_to_string/1,
+ t_string_to_integer/1,
+ t_string_to_float_safe/1, t_string_to_float_risky/1,
+ t_round/1, t_trunc/1
+ ]).
suite() -> [{ct_hooks,[ts_install_cth]}].
all() ->
- [t_abs, t_float, t_float_to_list, t_integer_to_list,
- {group, t_list_to_float}, t_list_to_integer, t_round,
+ [t_abs, t_float, t_float_to_string, t_integer_to_string,
+ {group, t_string_to_float}, t_string_to_integer, t_round,
t_trunc].
groups() ->
- [{t_list_to_float, [],
- [t_list_to_float_safe, t_list_to_float_risky]}].
+ [{t_string_to_float, [],
+ [t_string_to_float_safe, t_string_to_float_risky]}].
init_per_suite(Config) ->
Config.
@@ -65,273 +69,382 @@ end_per_group(_GroupName, Config) ->
t_abs(Config) when is_list(Config) ->
%% Floats.
- ?line 5.5 = abs(id(5.5)),
- ?line 0.0 = abs(id(0.0)),
- ?line 100.0 = abs(id(-100.0)),
+ 5.5 = abs(id(5.5)),
+ 0.0 = abs(id(0.0)),
+ 100.0 = abs(id(-100.0)),
%% Integers.
- ?line 5 = abs(id(5)),
- ?line 0 = abs(id(0)),
- ?line 100 = abs(id(-100)),
+ 5 = abs(id(5)),
+ 0 = abs(id(0)),
+ 100 = abs(id(-100)),
%% The largest smallnum. OTP-3190.
- ?line X = id((1 bsl 27) - 1),
- ?line X = abs(X),
- ?line X = abs(X-1)+1,
- ?line X = abs(X+1)-1,
- ?line X = abs(-X),
- ?line X = abs(-X-1)-1,
- ?line X = abs(-X+1)+1,
+ X = id((1 bsl 27) - 1),
+ X = abs(X),
+ X = abs(X-1)+1,
+ X = abs(X+1)-1,
+ X = abs(-X),
+ X = abs(-X-1)-1,
+ X = abs(-X+1)+1,
%% Bignums.
BigNum = id(13984792374983749),
- ?line BigNum = abs(BigNum),
- ?line BigNum = abs(-BigNum),
+ BigNum = abs(BigNum),
+ BigNum = abs(-BigNum),
ok.
t_float(Config) when is_list(Config) ->
- ?line 0.0 = float(id(0)),
- ?line 2.5 = float(id(2.5)),
- ?line 0.0 = float(id(0.0)),
- ?line -100.55 = float(id(-100.55)),
- ?line 42.0 = float(id(42)),
- ?line -100.0 = float(id(-100)),
+ 0.0 = float(id(0)),
+ 2.5 = float(id(2.5)),
+ 0.0 = float(id(0.0)),
+ -100.55 = float(id(-100.55)),
+ 42.0 = float(id(42)),
+ -100.0 = float(id(-100)),
%% Bignums.
- ?line 4294967305.0 = float(id(4294967305)),
- ?line -4294967305.0 = float(id(-4294967305)),
+ 4294967305.0 = float(id(4294967305)),
+ -4294967305.0 = float(id(-4294967305)),
%% Extremly big bignums.
- ?line Big = id(list_to_integer(id(lists:duplicate(2000, $1)))),
- ?line {'EXIT', {badarg, _}} = (catch float(Big)),
-
- %% Invalid types and lists.
- ?line {'EXIT', {badarg, _}} = (catch list_to_integer(id(atom))),
- ?line {'EXIT', {badarg, _}} = (catch list_to_integer(id(123))),
- ?line {'EXIT', {badarg, _}} = (catch list_to_integer(id([$1,[$2]]))),
- ?line {'EXIT', {badarg, _}} = (catch list_to_integer(id("1.2"))),
- ?line {'EXIT', {badarg, _}} = (catch list_to_integer(id("a"))),
- ?line {'EXIT', {badarg, _}} = (catch list_to_integer(id(""))),
+ Big = id(list_to_integer(id(lists:duplicate(2000, $1)))),
+ {'EXIT', {badarg, _}} = (catch float(Big)),
+
ok.
-%% Tests float_to_list/1, float_to_list/2.
-
-t_float_to_list(Config) when is_list(Config) ->
- test_ftl("0.0e+0", 0.0),
- test_ftl("2.5e+1", 25.0),
- test_ftl("2.5e+0", 2.5),
- test_ftl("2.5e-1", 0.25),
- test_ftl("-3.5e+17", -350.0e15),
- "1.00000000000000000000e+00" = float_to_list(1.0),
- "1.00000000000000000000e+00" = float_to_list(1.0, []),
- "-1.00000000000000000000e+00" = float_to_list(-1.0, []),
- "-1.00000000000000000000" = float_to_list(-1.0, [{decimals, 20}]),
- {'EXIT', {badarg, _}} = (catch float_to_list(1.0, [{decimals, -1}])),
- {'EXIT', {badarg, _}} = (catch float_to_list(1.0, [{decimals, 254}])),
- {'EXIT', {badarg, _}} = (catch float_to_list(1.0, [{scientific, 250}])),
- {'EXIT', {badarg, _}} = (catch float_to_list(1.0e+300, [{decimals, 1}])),
- "1.0e+300" = float_to_list(1.0e+300, [{scientific, 1}]),
- "1.0" = float_to_list(1.0, [{decimals, 249}, compact]),
- "1" = float_to_list(1.0, [{decimals, 0}]),
- "2" = float_to_list(1.9, [{decimals, 0}]),
- "123456789012345680.0" = erlang:float_to_list(
- 123456789012345678.0, [{decimals, 236}, compact]),
- {'EXIT', {badarg, _}} = (catch float_to_list(
- 123456789012345678.0, [{decimals, 237}])),
- Expected = "1." ++ string:copies("0", 249) ++ "e+00",
- Expected = float_to_list(1.0, [{scientific, 249}, compact]),
+%% Tests float_to_list/1, float_to_list/2, float_to_binary/1, float_to_binary/2
+
+t_float_to_string(Config) when is_list(Config) ->
+ test_fts("0.00000000000000000000e+00", 0.0),
+ test_fts("2.50000000000000000000e+01", 25.0),
+ test_fts("2.50000000000000000000e+00", 2.5),
+ test_fts("2.50000000000000000000e-01", 0.25),
+ test_fts("-3.50000000000000000000e+17", -350.0e15),
+ test_fts("1.00000000000000000000e+00",1.0),
+ test_fts("1.00000000000000000000e+00",1.0, []),
+ test_fts("-1.00000000000000000000e+00",-1.0, []),
+ test_fts("-1.00000000000000000000",-1.0, [{decimals, 20}]),
+ {'EXIT', {badarg, _}} = (catch float_to_list(1.0, [{decimals, -1}])),
+ {'EXIT', {badarg, _}} = (catch float_to_list(1.0, [{decimals, 254}])),
+ {'EXIT', {badarg, _}} = (catch float_to_list(1.0, [{scientific, 250}])),
+ {'EXIT', {badarg, _}} = (catch float_to_list(1.0e+300, [{decimals, 1}])),
+ {'EXIT', {badarg, _}} = (catch float_to_binary(1.0, [{decimals, -1}])),
+ {'EXIT', {badarg, _}} = (catch float_to_binary(1.0, [{decimals, 254}])),
+ {'EXIT', {badarg, _}} = (catch float_to_binary(1.0, [{scientific, 250}])),
+ {'EXIT', {badarg, _}} = (catch float_to_binary(1.0e+300, [{decimals, 1}])),
+ test_fts("1.0e+300",1.0e+300, [{scientific, 1}]),
+ test_fts("1.0",1.0, [{decimals, 249}, compact]),
+ test_fts("1",1.0,[{decimals,0}]),
+ test_fts("2",1.9,[{decimals,0}]),
+ test_fts("123456789012345680.0",123456789012345678.0,
+ [{decimals, 236}, compact]),
+ {'EXIT', {badarg, _}} = (catch float_to_list(
+ 123456789012345678.0, [{decimals, 237}])),
+ {'EXIT', {badarg, _}} = (catch float_to_binary(
+ 123456789012345678.0, [{decimals, 237}])),
+ test_fts("1." ++ string:copies("0", 249) ++ "e+00",
+ 1.0, [{scientific, 249}, compact]),
X1 = float_to_list(1.0),
X2 = float_to_list(1.0, [{scientific, 20}]),
X1 = X2,
- "1.000e+00" = float_to_list(1.0, [{scientific, 3}]),
- "1.000" = float_to_list(1.0, [{decimals, 3}]),
- "1.0" = float_to_list(1.0, [{decimals, 1}]),
- "1.0" = float_to_list(1.0, [{decimals, 3}, compact]),
- "1.12" = float_to_list(1.123, [{decimals, 2}]),
- "1.123" = float_to_list(1.123, [{decimals, 3}]),
- "1.123" = float_to_list(1.123, [{decimals, 3}, compact]),
- "1.1230" = float_to_list(1.123, [{decimals, 4}]),
- "1.12300" = float_to_list(1.123, [{decimals, 5}]),
- "1.123" = float_to_list(1.123, [{decimals, 5}, compact]),
- "1.1234" = float_to_list(1.1234,[{decimals, 6}, compact]),
- "1.01" = float_to_list(1.005, [{decimals, 2}]),
- "-1.01" = float_to_list(-1.005,[{decimals, 2}]),
- "0.999" = float_to_list(0.999, [{decimals, 3}]),
- "-0.999" = float_to_list(-0.999,[{decimals, 3}]),
- "1.0" = float_to_list(0.999, [{decimals, 2}, compact]),
- "-1.0" = float_to_list(-0.999,[{decimals, 2}, compact]),
- "0.5" = float_to_list(0.5, [{decimals, 1}]),
- "-0.5" = float_to_list(-0.5, [{decimals, 1}]),
+
+ Y1 = float_to_binary(1.0),
+ Y2 = float_to_binary(1.0, [{scientific, 20}]),
+ Y1 = Y2,
+
+ test_fts("1.000e+00",1.0, [{scientific, 3}]),
+ test_fts("1.000",1.0, [{decimals, 3}]),
+ test_fts("1.0",1.0, [{decimals, 1}]),
+ test_fts("1.0",1.0, [{decimals, 3}, compact]),
+ test_fts("1.12",1.123, [{decimals, 2}]),
+ test_fts("1.123",1.123, [{decimals, 3}]),
+ test_fts("1.123",1.123, [{decimals, 3}, compact]),
+ test_fts("1.1230",1.123, [{decimals, 4}]),
+ test_fts("1.12300",1.123, [{decimals, 5}]),
+ test_fts("1.123",1.123, [{decimals, 5}, compact]),
+ test_fts("1.1234",1.1234,[{decimals, 6}, compact]),
+ test_fts("1.01",1.005, [{decimals, 2}]),
+ test_fts("-1.01",-1.005,[{decimals, 2}]),
+ test_fts("0.999",0.999, [{decimals, 3}]),
+ test_fts("-0.999",-0.999,[{decimals, 3}]),
+ test_fts("1.0",0.999, [{decimals, 2}, compact]),
+ test_fts("-1.0",-0.999,[{decimals, 2}, compact]),
+ test_fts("0.5",0.5, [{decimals, 1}]),
+ test_fts("-0.5",-0.5, [{decimals, 1}]),
"2.333333" = erlang:float_to_list(7/3, [{decimals, 6}, compact]),
"2.333333" = erlang:float_to_list(7/3, [{decimals, 6}]),
- "0.00000000000000000000e+00" = float_to_list(0.0, [compact]),
- "0.0" = float_to_list(0.0, [{decimals, 10}, compact]),
- "123000000000000000000.0" = float_to_list(1.23e20, [{decimals, 10}, compact]),
- "1.2300000000e+20" = float_to_list(1.23e20, [{scientific, 10}, compact]),
- "1.23000000000000000000e+20" = float_to_list(1.23e20, []),
+ <<"2.333333">> = erlang:float_to_binary(7/3, [{decimals, 6}, compact]),
+ <<"2.333333">> = erlang:float_to_binary(7/3, [{decimals, 6}]),
+ test_fts("0.00000000000000000000e+00",0.0, [compact]),
+ test_fts("0.0",0.0, [{decimals, 10}, compact]),
+ test_fts("123000000000000000000.0",1.23e20, [{decimals, 10}, compact]),
+ test_fts("1.2300000000e+20",1.23e20, [{scientific, 10}, compact]),
+ test_fts("1.23000000000000000000e+20",1.23e20, []),
ok.
-test_ftl(Expect, Float) ->
- %% No ?line on the next line -- we want the line number from t_float_to_list.
- Expect = remove_zeros(lists:reverse(float_to_list(Float)), []).
-
-%% Removes any non-significant zeros in a floating point number.
-%% Example: 2.500000e+01 -> 2.5e+1
-
-remove_zeros([$+, $e|Rest], [$0, X|Result]) ->
- remove_zeros([$+, $e|Rest], [X|Result]);
-remove_zeros([$-, $e|Rest], [$0, X|Result]) ->
- remove_zeros([$-, $e|Rest], [X|Result]);
-remove_zeros([$0, $.|Rest], [$e|Result]) ->
- remove_zeros(Rest, [$., $0, $e|Result]);
-remove_zeros([$0|Rest], [$e|Result]) ->
- remove_zeros(Rest, [$e|Result]);
-remove_zeros([Char|Rest], Result) ->
- remove_zeros(Rest, [Char|Result]);
-remove_zeros([], Result) ->
- Result.
-
-%% Tests integer_to_list/1.
-
-t_integer_to_list(Config) when is_list(Config) ->
- ?line "0" = integer_to_list(id(0)),
- ?line "42" = integer_to_list(id(42)),
- ?line "-42" = integer_to_list(id(-42)),
- ?line "32768" = integer_to_list(id(32768)),
- ?line "268435455" = integer_to_list(id(268435455)),
- ?line "-268435455" = integer_to_list(id(-268435455)),
- ?line "123456932798748738738" = integer_to_list(id(123456932798748738738)),
- ?line Big_List = id(lists:duplicate(2000, id($1))),
- ?line Big = list_to_integer(Big_List),
- ?line Big_List = integer_to_list(Big),
- ok.
+test_fts(Expect, Float) ->
+ Expect = float_to_list(Float),
+ BinExpect = list_to_binary(Expect),
+ BinExpect = float_to_binary(Float).
-%% Tests list_to_float/1.
+test_fts(Expect, Float, Args) ->
+ Expect = float_to_list(Float,Args),
+ BinExpect = list_to_binary(Expect),
+ BinExpect = float_to_binary(Float,Args).
-t_list_to_float_safe(Config) when is_list(Config) ->
- ?line 0.0 = list_to_float(id("0.0")),
- ?line 0.0 = list_to_float(id("-0.0")),
- ?line 0.5 = list_to_float(id("0.5")),
- ?line -0.5 = list_to_float(id("-0.5")),
- ?line 100.0 = list_to_float(id("1.0e2")),
- ?line 127.5 = list_to_float(id("127.5")),
- ?line -199.5 = list_to_float(id("-199.5")),
+%% Tests list_to_float/1.
- ?line {'EXIT',{badarg,_}} = (catch list_to_float(id("0"))),
- ?line {'EXIT',{badarg,_}} = (catch list_to_float(id("0..0"))),
- ?line {'EXIT',{badarg,_}} = (catch list_to_float(id("0e12"))),
- ?line {'EXIT',{badarg,_}} = (catch list_to_float(id("--0.0"))),
+t_string_to_float_safe(Config) when is_list(Config) ->
+ test_stf(0.0,"0.0"),
+ test_stf(0.0,"-0.0"),
+ test_stf(0.5,"0.5"),
+ test_stf(-0.5,"-0.5"),
+ test_stf(100.0,"1.0e2"),
+ test_stf(127.5,"127.5"),
+ test_stf(-199.5,"-199.5"),
+
+ {'EXIT',{badarg,_}} = (catch list_to_float(id("0"))),
+ {'EXIT',{badarg,_}} = (catch list_to_float(id("0..0"))),
+ {'EXIT',{badarg,_}} = (catch list_to_float(id("0e12"))),
+ {'EXIT',{badarg,_}} = (catch list_to_float(id("--0.0"))),
+ {'EXIT',{badarg,_}} = (catch binary_to_float(id(<<"0">>))),
+ {'EXIT',{badarg,_}} = (catch binary_to_float(id(<<"0..0">>))),
+ {'EXIT',{badarg,_}} = (catch binary_to_float(id(<<"0e12">>))),
+ {'EXIT',{badarg,_}} = (catch binary_to_float(id(<<"--0.0">>))),
+
+ UBin = <<0:3,(id(<<"0.0">>))/binary,0:5>>,
+ <<_:3,UnAlignedBin:3/binary,0:5>> = id(UBin),
+ 0.0 = binary_to_float(UnAlignedBin),
+
+ ABin = <<0:8,(id(<<"1.0">>))/binary,0:8>>,
+ <<_:8,AlignedBin:3/binary,0:8>> = id(ABin),
+ 1.0 = binary_to_float(AlignedBin),
ok.
%% This might crash the emulator...
%% (Known to crash the Unix version of Erlang 4.4.1)
-t_list_to_float_risky(Config) when is_list(Config) ->
- ?line Many_Ones = lists:duplicate(25000, id($1)),
- ?line id(list_to_float("2."++Many_Ones)),
- ?line {'EXIT', {badarg, _}} = (catch list_to_float("2"++Many_Ones)),
- ok.
-
-%% Tests list_to_integer/1.
+t_string_to_float_risky(Config) when is_list(Config) ->
+ Many_Ones = lists:duplicate(25000, id($1)),
+ id(list_to_float("2."++Many_Ones)),
+ {'EXIT', {badarg, _}} = (catch list_to_float("2"++Many_Ones)),
-t_list_to_integer(Config) when is_list(Config) ->
- ?line 0 = list_to_integer(id("0")),
- ?line 0 = list_to_integer(id("00")),
- ?line 0 = list_to_integer(id("-0")),
- ?line 1 = list_to_integer(id("1")),
- ?line -1 = list_to_integer(id("-1")),
- ?line 42 = list_to_integer(id("42")),
- ?line -12 = list_to_integer(id("-12")),
- ?line 32768 = list_to_integer(id("32768")),
- ?line 268435455 = list_to_integer(id("268435455")),
- ?line -268435455 = list_to_integer(id("-268435455")),
-
- %% Bignums.
- ?line 123456932798748738738 = list_to_integer(id("123456932798748738738")),
- ?line id(list_to_integer(lists:duplicate(2000, id($1)))),
+ id(binary_to_float(list_to_binary("2."++Many_Ones))),
+ {'EXIT', {badarg, _}} = (catch binary_to_float(
+ list_to_binary("2"++Many_Ones))),
ok.
+test_stf(Expect,List) ->
+ Expect = list_to_float(List),
+ Bin = list_to_binary(List),
+ Expect = binary_to_float(Bin).
+
%% Tests round/1.
t_round(Config) when is_list(Config) ->
- ?line 0 = round(id(0.0)),
- ?line 0 = round(id(0.4)),
- ?line 1 = round(id(0.5)),
- ?line 0 = round(id(-0.4)),
- ?line -1 = round(id(-0.5)),
- ?line 255 = round(id(255.3)),
- ?line 256 = round(id(255.6)),
- ?line -1033 = round(id(-1033.3)),
- ?line -1034 = round(id(-1033.6)),
+ 0 = round(id(0.0)),
+ 0 = round(id(0.4)),
+ 1 = round(id(0.5)),
+ 0 = round(id(-0.4)),
+ -1 = round(id(-0.5)),
+ 255 = round(id(255.3)),
+ 256 = round(id(255.6)),
+ -1033 = round(id(-1033.3)),
+ -1034 = round(id(-1033.6)),
% OTP-3722:
- ?line X = id((1 bsl 27) - 1),
- ?line MX = -X,
- ?line MXm1 = -X-1,
- ?line MXp1 = -X+1,
- ?line F = id(X + 0.0),
- ?line X = round(F),
- ?line X = round(F+1)-1,
- ?line X = round(F-1)+1,
- ?line MX = round(-F),
- ?line MXm1 = round(-F-1),
- ?line MXp1 = round(-F+1),
-
- ?line X = round(F+0.1),
- ?line X = round(F+1+0.1)-1,
- ?line X = round(F-1+0.1)+1,
- ?line MX = round(-F+0.1),
- ?line MXm1 = round(-F-1+0.1),
- ?line MXp1 = round(-F+1+0.1),
-
- ?line X = round(F-0.1),
- ?line X = round(F+1-0.1)-1,
- ?line X = round(F-1-0.1)+1,
- ?line MX = round(-F-0.1),
- ?line MXm1 = round(-F-1-0.1),
- ?line MXp1 = round(-F+1-0.1),
-
- ?line 0.5 = abs(round(F+0.5)-(F+0.5)),
- ?line 0.5 = abs(round(F-0.5)-(F-0.5)),
- ?line 0.5 = abs(round(-F-0.5)-(-F-0.5)),
- ?line 0.5 = abs(round(-F+0.5)-(-F+0.5)),
+ X = id((1 bsl 27) - 1),
+ MX = -X,
+ MXm1 = -X-1,
+ MXp1 = -X+1,
+ F = id(X + 0.0),
+ X = round(F),
+ X = round(F+1)-1,
+ X = round(F-1)+1,
+ MX = round(-F),
+ MXm1 = round(-F-1),
+ MXp1 = round(-F+1),
+
+ X = round(F+0.1),
+ X = round(F+1+0.1)-1,
+ X = round(F-1+0.1)+1,
+ MX = round(-F+0.1),
+ MXm1 = round(-F-1+0.1),
+ MXp1 = round(-F+1+0.1),
+
+ X = round(F-0.1),
+ X = round(F+1-0.1)-1,
+ X = round(F-1-0.1)+1,
+ MX = round(-F-0.1),
+ MXm1 = round(-F-1-0.1),
+ MXp1 = round(-F+1-0.1),
+
+ 0.5 = abs(round(F+0.5)-(F+0.5)),
+ 0.5 = abs(round(F-0.5)-(F-0.5)),
+ 0.5 = abs(round(-F-0.5)-(-F-0.5)),
+ 0.5 = abs(round(-F+0.5)-(-F+0.5)),
%% Bignums.
- ?line 4294967296 = round(id(4294967296.1)),
- ?line 4294967297 = round(id(4294967296.9)),
- ?line -4294967296 = -round(id(4294967296.1)),
- ?line -4294967297 = -round(id(4294967296.9)),
+ 4294967296 = round(id(4294967296.1)),
+ 4294967297 = round(id(4294967296.9)),
+ -4294967296 = -round(id(4294967296.1)),
+ -4294967297 = -round(id(4294967296.9)),
ok.
t_trunc(Config) when is_list(Config) ->
- ?line 0 = trunc(id(0.0)),
- ?line 5 = trunc(id(5.3333)),
- ?line -10 = trunc(id(-10.978987)),
+ 0 = trunc(id(0.0)),
+ 5 = trunc(id(5.3333)),
+ -10 = trunc(id(-10.978987)),
% The largest smallnum, converted to float (OTP-3722):
- ?line X = id((1 bsl 27) - 1),
- ?line F = id(X + 0.0),
+ X = id((1 bsl 27) - 1),
+ F = id(X + 0.0),
io:format("X = ~p/~w/~w, F = ~p/~w/~w, trunc(F) = ~p/~w/~w~n",
[X, X, binary_to_list(term_to_binary(X)),
F, F, binary_to_list(term_to_binary(F)),
trunc(F), trunc(F), binary_to_list(term_to_binary(trunc(F)))]),
- ?line X = trunc(F),
- ?line X = trunc(F+1)-1,
- ?line X = trunc(F-1)+1,
- ?line X = -trunc(-F),
- ?line X = -trunc(-F-1)-1,
- ?line X = -trunc(-F+1)+1,
+ X = trunc(F),
+ X = trunc(F+1)-1,
+ X = trunc(F-1)+1,
+ X = -trunc(-F),
+ X = -trunc(-F-1)-1,
+ X = -trunc(-F+1)+1,
%% Bignums.
- ?line 4294967305 = trunc(id(4294967305.7)),
- ?line -4294967305 = trunc(id(-4294967305.7)),
+ 4294967305 = trunc(id(4294967305.7)),
+ -4294967305 = trunc(id(-4294967305.7)),
ok.
+
+%% Tests integer_to_binary/1.
+
+t_integer_to_string(Config) when is_list(Config) ->
+ test_its("0",0),
+ test_its("42",42),
+ test_its("-42",-42),
+ test_its("32768",32768),
+ test_its("268435455",268435455),
+ test_its("-268435455",-268435455),
+ test_its("123456932798748738738",123456932798748738738),
+
+ %% 1 bsl 33, just beyond 32 bit
+ test_its("8589934592",8589934592),
+ test_its("-8589934592",-8589934592),
+ %% 1 bsl 65, just beyond 64 bit
+ test_its("36893488147419103232",36893488147419103232),
+ test_its("-36893488147419103232",-36893488147419103232),
+
+ %% Bignums.
+ BigBin = id(list_to_binary(lists:duplicate(2000, id($1)))),
+ Big = erlang:binary_to_integer(BigBin),
+ BigBin = erlang:integer_to_binary(Big),
+
+ %% Invalid types
+ lists:foreach(fun(Value) ->
+ {'EXIT', {badarg, _}} =
+ (catch erlang:integer_to_binary(Value)),
+ {'EXIT', {badarg, _}} =
+ (catch erlang:integer_to_list(Value))
+ end,[atom,1.2,0.0,[$1,[$2]]]),
+
+ ok.
+
+test_its(List,Int) ->
+ Int = list_to_integer(List),
+ Int = binary_to_integer(list_to_binary(List)).
+
+%% Tests binary_to_integer/1.
+
+t_string_to_integer(Config) when is_list(Config) ->
+ 0 = erlang:binary_to_integer(id(<<"00">>)),
+ 0 = erlang:binary_to_integer(id(<<"-0">>)),
+ 0 = erlang:binary_to_integer(id(<<"+0">>)),
+
+ test_sti(0),
+ test_sti(1),
+ test_sti(-1),
+ test_sti(42),
+ test_sti(-12),
+ test_sti(32768),
+ test_sti(268435455),
+ test_sti(-268435455),
+
+ %% 1 bsl 28 - 1, just before 32 bit bignum
+ test_sti(1 bsl 28 - 1),
+ %% 1 bsl 28, just beyond 32 bit small
+ test_sti(1 bsl 28),
+ %% 1 bsl 33, just beyond 32 bit
+ test_sti(1 bsl 33),
+ %% 1 bsl 60 - 1, just before 64 bit bignum
+ test_sti(1 bsl 60 - 1),
+ %% 1 bsl 60, just beyond 64 bit small
+ test_sti(1 bsl 60),
+ %% 1 bsl 65, just beyond 64 bit
+ test_sti(1 bsl 65),
+ %% Bignums.
+ test_sti(123456932798748738738,16),
+ test_sti(list_to_integer(lists:duplicate(2000, $1))),
+
+ %% unalign string
+ Str = <<"10">>,
+ UnalignStr = <<0:3, (id(Str))/binary, 0:5>>,
+ <<_:3, SomeStr:2/binary, _:5>> = id(UnalignStr),
+ 10 = erlang:binary_to_integer(SomeStr),
+
+ %% Invalid types
+ lists:foreach(fun(Value) ->
+ {'EXIT', {badarg, _}} =
+ (catch binary_to_integer(Value)),
+ {'EXIT', {badarg, _}} =
+ (catch erlang:list_to_integer(Value))
+ end,[atom,1.2,0.0,[$1,[$2]]]),
+
+ % Default base error cases
+ lists:foreach(fun(Value) ->
+ {'EXIT', {badarg, _}} =
+ (catch erlang:binary_to_integer(
+ list_to_binary(Value))),
+ {'EXIT', {badarg, _}} =
+ (catch erlang:list_to_integer(Value))
+ end,["1.0"," 1"," -1",""]),
+
+ % Custom base error cases
+ lists:foreach(fun({Value,Base}) ->
+ {'EXIT', {badarg, _}} =
+ (catch binary_to_integer(
+ list_to_binary(Value),Base)),
+ {'EXIT', {badarg, _}} =
+ (catch erlang:list_to_integer(Value,Base))
+ end,[{" 1",1},{" 1",37},{"2",2},{"C",11},
+ {"1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111z",16},
+ {"1z111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111",16},
+ {"111z11111111",16}]),
+
+ ok.
+
+test_sti(Num) ->
+ [begin
+ io:format("Testing ~p:~p",[Num,Base]),
+ test_sti(Num,Base)
+ end|| Base <- lists:seq(2,36)].
+
+test_sti(Num,Base) ->
+ Num = list_to_integer(int2list(Num,Base),Base),
+ Num = -1*list_to_integer(int2list(Num*-1,Base),Base),
+ Num = binary_to_integer(int2bin(Num,Base),Base),
+ Num = -1*binary_to_integer(int2bin(Num*-1,Base),Base).
+
% Calling this function (which is not supposed to be inlined) prevents
% the compiler from calculating the answer, so we don't test the compiler
% instead of the newest runtime system.
id(X) -> X.
+
+%% Uses the printing library to to integer_to_binary conversions.
+int2bin(Int,Base) when Base < 37 ->
+ iolist_to_binary(int2list(Int,Base)).
+
+int2list(Int,Base) when Base < 37 ->
+ lists:flatten(io_lib:format("~."++integer_to_list(Base)++"B",[Int])).