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-rw-r--r--erts/emulator/test/num_bif_SUITE.erl22
-rw-r--r--erts/preloaded/ebin/erlang.beambin94136 -> 94176 bytes
-rw-r--r--erts/preloaded/src/erlang.erl15
3 files changed, 30 insertions, 7 deletions
diff --git a/erts/emulator/test/num_bif_SUITE.erl b/erts/emulator/test/num_bif_SUITE.erl
index b92a0e2059..ff8d18eef8 100644
--- a/erts/emulator/test/num_bif_SUITE.erl
+++ b/erts/emulator/test/num_bif_SUITE.erl
@@ -350,12 +350,34 @@ t_integer_to_string(Config) when is_list(Config) ->
(catch erlang:integer_to_list(Value))
end,[atom,1.2,0.0,[$1,[$2]]]),
+ %% Base-2 integers
+ test_its("0", 0, 2),
+ test_its("1", 1, 2),
+ test_its("110110", 54, 2),
+ test_its("-1000000", -64, 2),
+ %% Base-16 integers
+ test_its("0", 0, 16),
+ test_its("A", 10, 16),
+ test_its("D4BE", 54462, 16),
+ test_its("-D4BE", -54462, 16),
+
+ lists:foreach(fun(Value) ->
+ {'EXIT', {badarg, _}} =
+ (catch erlang:integer_to_binary(Value, 8)),
+ {'EXIT', {badarg, _}} =
+ (catch erlang:integer_to_list(Value, 8))
+ end,[atom,1.2,0.0,[$1,[$2]]]),
+
ok.
test_its(List,Int) ->
Int = list_to_integer(List),
Int = binary_to_integer(list_to_binary(List)).
+test_its(List,Int,Base) ->
+ Int = list_to_integer(List, Base),
+ Int = binary_to_integer(list_to_binary(List), Base).
+
%% Tests binary_to_integer/1.
t_string_to_integer(Config) when is_list(Config) ->
diff --git a/erts/preloaded/ebin/erlang.beam b/erts/preloaded/ebin/erlang.beam
index 09eafbcc29..83cafe197e 100644
--- a/erts/preloaded/ebin/erlang.beam
+++ b/erts/preloaded/ebin/erlang.beam
Binary files differ
diff --git a/erts/preloaded/src/erlang.erl b/erts/preloaded/src/erlang.erl
index e016a50c4c..a969ef91dc 100644
--- a/erts/preloaded/src/erlang.erl
+++ b/erts/preloaded/src/erlang.erl
@@ -2891,22 +2891,23 @@ integer_to_binary(I, Base)
when erlang:is_integer(I), erlang:is_integer(Base),
Base >= 2, Base =< 1+$Z-$A+10 ->
if I < 0 ->
- <<"$-",(integer_to_binary(-I, Base, []))/binary>>;
+ <<$-,(integer_to_binary(-I, Base, <<>>))/binary>>;
true ->
integer_to_binary(I, Base, <<>>)
end;
integer_to_binary(I, Base) ->
erlang:error(badarg, [I, Base]).
-integer_to_binary(0, _Base, R0) ->
- R0;
integer_to_binary(I0, Base, R0) ->
D = I0 rem Base,
I1 = I0 div Base,
- if D >= 10 ->
- integer_to_binary(I1,Base,<<(D-10+$A),R0/binary>>);
- true ->
- integer_to_binary(I1,Base,<<(D+$0),R0/binary>>)
+ R1 = if
+ D >= 10 -> <<(D-10+$A),R0/binary>>;
+ true -> <<(D+$0),R0/binary>>
+ end,
+ if
+ I1 =:= 0 -> R1;
+ true -> integer_to_binary(I1, Base, R1)
end.
%% erlang:flush_monitor_message/2 is for internal use only!