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fix

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anlicheng 2023-08-09 11:18:48 +08:00
parent 394ebe67cc
commit c899626954
1 changed files with 10 additions and 1 deletions
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11
apps/iot/src/iot_util.erl
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@ -10,7 +10,7 @@
-author("licheng5").
%% API
-export([timestamp/0, number_format/2, current_time/0, timestamp_of_seconds/0, float_to_binary/2]).
-export([timestamp/0, number_format/2, current_time/0, timestamp_of_seconds/0, float_to_binary/2, int_format/2]).
-export([step/3, chunks/2, rand_bytes/1, uuid/0, md5/1, parse_mapper/1]).
-export([json_data/1, json_error/2]).
-export([queue_limited_in/3, assert_call/2]).
@ -33,6 +33,15 @@ number_format(Num, _Decimals) when is_integer(Num) ->
number_format(Float, Decimals) when is_float(Float) ->
list_to_float(float_to_list(Float, [{decimals, Decimals}, compact])).
int_format(Num, Len) when is_integer(Num), Len > 0 ->
S = integer_to_list(Num),
case length(S) > Len of
true ->
list_to_integer(lists:sublist(S, 1, Len));
false ->
Num
end.
step(Start, End, Step) when is_integer(Start), is_integer(End), is_integer(Step), Start < End, Step > 0 ->
step(Start, End, Step, []).
step(Start, End, Step, Acc) when Start < End ->