%% %% %CopyrightBegin% %% %% Copyright Ericsson AB 2004-2011. All Rights Reserved. %% %% The contents of this file are subject to the Erlang Public License, %% Version 1.1, (the "License"); you may not use this file except in %% compliance with the License. You should have received a copy of the %% Erlang Public License along with this software. If not, it can be %% retrieved online at http://www.erlang.org/. %% %% Software distributed under the License is distributed on an "AS IS" %% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See %% the License for the specific language governing rights and limitations %% under the License. %% %% %CopyrightEnd% %% -module(num_bif_SUITE). -include_lib("test_server/include/test_server.hrl"). %% Tests optimization of the BIFs: %% abs/1 %% float/1 %% float_to_list/1 %% integer_to_list/1 %% list_to_float/1 %% 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]). suite() -> [{ct_hooks,[ts_install_cth]}]. all() -> test_lib:recompile(?MODULE), [t_abs, t_float, t_float_to_list, t_integer_to_list, {group, t_list_to_float}, t_list_to_integer, t_round, t_trunc]. groups() -> [{t_list_to_float, [], [t_list_to_float_safe, t_list_to_float_risky]}]. init_per_suite(Config) -> Config. end_per_suite(_Config) -> ok. init_per_group(_GroupName, Config) -> Config. end_per_group(_GroupName, Config) -> Config. t_abs(Config) when is_list(Config) -> %% Floats. ?line 5.5 = abs(5.5), ?line 0.0 = abs(0.0), ?line 100.0 = abs(-100.0), %% Integers. ?line 5 = abs(5), ?line 0 = abs(0), ?line 100 = abs(-100), %% The largest smallnum. OTP-3190. ?line X = (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, %% Bignums. BigNum = 13984792374983749, ?line BigNum = abs(BigNum), ?line BigNum = abs(-BigNum), ok. t_float(Config) when is_list(Config) -> ?line 0.0 = float(0), ?line 2.5 = float(2.5), ?line 0.0 = float(0.0), ?line -100.55 = float(-100.55), ?line 42.0 = float(42), ?line -100.0 = float(-100), %% Bignums. ?line 4294967305.0 = float(4294967305), ?line -4294967305.0 = float(-4294967305), %% Extremly big bignums. ?line Big = list_to_integer(lists:duplicate(2000, $1)), ?line {'EXIT', {badarg, _}} = (catch float(Big)), %% Invalid types and lists. ?line {'EXIT', {badarg, _}} = (catch list_to_integer(atom)), ?line {'EXIT', {badarg, _}} = (catch list_to_integer(123)), ?line {'EXIT', {badarg, _}} = (catch list_to_integer([$1, [$2]])), ?line {'EXIT', {badarg, _}} = (catch list_to_integer("1.2")), ?line {'EXIT', {badarg, _}} = (catch list_to_integer("a")), ?line {'EXIT', {badarg, _}} = (catch list_to_integer("")), ok. %% Tests float_to_list/1. t_float_to_list(Config) when is_list(Config) -> ?line test_ftl("0.0e+0", 0.0), ?line test_ftl("2.5e+1", 25.0), ?line test_ftl("2.5e+0", 2.5), ?line test_ftl("2.5e-1", 0.25), ?line test_ftl("-3.5e+17", -350.0e15), ok. test_ftl(Expect, Float) -> %% No ?line on the next line -- we want the line number from t_float_to_list. Expect = remove_zeros(lists:reverse(float_to_list(Float)), []). %% Removes any non-significant zeros in a floating point number. %% Example: 2.500000e+01 -> 2.5e+1 remove_zeros([$+, $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(0), ?line "42" = integer_to_list(42), ?line "-42" = integer_to_list(-42), ?line "-42" = integer_to_list(-42), ?line "32768" = integer_to_list(32768), ?line "268435455" = integer_to_list(268435455), ?line "-268435455" = integer_to_list(-268435455), ?line "123456932798748738738" = integer_to_list(123456932798748738738), ?line Big_List = lists:duplicate(2000, $1), ?line Big = list_to_integer(Big_List), ?line Big_List = integer_to_list(Big), ok. %% Tests list_to_float/1. t_list_to_float_safe(Config) when is_list(Config) -> ?line 0.0 = list_to_float("0.0"), ?line 0.0 = list_to_float("-0.0"), ?line 0.5 = list_to_float("0.5"), ?line -0.5 = list_to_float("-0.5"), ?line 100.0 = list_to_float("1.0e2"), ?line 127.5 = list_to_float("127.5"), ?line -199.5 = list_to_float("-199.5"), ?line {'EXIT', {badarg, _}} = (catch list_to_float("0")), ?line {'EXIT', {badarg, _}} = (catch list_to_float("0..0")), ?line {'EXIT', {badarg, _}} = (catch list_to_float("0e12")), ?line {'EXIT', {badarg, _}} = (catch list_to_float("--0.0")), %% ?line {'EXIT', {badarg, _}} = (catch list_to_float("0.0e+99999999")), 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, $1), ?line _ = list_to_float("2."++Many_Ones), ?line {'EXIT', {badarg, _}} = (catch list_to_float("2"++Many_Ones)), ok. %% Tests list_to_integer/1. t_list_to_integer(Config) when is_list(Config) -> ?line 0 = list_to_integer("0"), ?line 0 = list_to_integer("00"), ?line 0 = list_to_integer("-0"), ?line 1 = list_to_integer("1"), ?line -1 = list_to_integer("-1"), ?line 42 = list_to_integer("42"), ?line -12 = list_to_integer("-12"), ?line 32768 = list_to_integer("32768"), ?line 268435455 = list_to_integer("268435455"), ?line -268435455 = list_to_integer("-268435455"), %% Bignums. ?line 123456932798748738738 = list_to_integer("123456932798748738738"), ?line _ = list_to_integer(lists:duplicate(2000, $1)), ok. %% Tests round/1. t_round(Config) when is_list(Config) -> ?line 0 = round(0.0), ?line 0 = round(0.4), ?line 1 = round(0.5), ?line 0 = round(-0.4), ?line -1 = round(-0.5), ?line 255 = round(255.3), ?line 256 = round(255.6), ?line -1033 = round(-1033.3), ?line -1034 = round(-1033.6), % OTP-3722: ?line X = (1 bsl 27) - 1, ?line MX = -X, ?line MXm1 = -X-1, ?line MXp1 = -X+1, ?line F = 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)), %% Bignums. ?line 4294967296 = round(4294967296.1), ?line 4294967297 = round(4294967296.9), ?line -4294967296 = -round(4294967296.1), ?line -4294967297 = -round(4294967296.9), ok. t_trunc(Config) when is_list(Config) -> ?line 0 = trunc(0.0), ?line 5 = trunc(5.3333), ?line -10 = trunc(-10.978987), % The largest smallnum, converted to float (OTP-3722): ?line X = (1 bsl 27) - 1, ?line F = 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, %% Bignums. ?line 4294967305 = trunc(4294967305.7), ?line -4294967305 = trunc(-4294967305.7), ok.