QPQ-AG/getopt
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Use io_lib:format/2 instead of float_to_list/1 to display floats

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Erlang's list_to_float/1 function will use scientific notation and add
additional less significant digits to the resulting string due to the
internal floating point representation. io_lib:format/2 rounds the
values to better match what the user normally expects. e.g.

> float_to_list(0.66).
"6.60000000000000031086e-01"
> io_lib:format("~w", [0.66]).
["0.66"]
This commit is contained in:
Juan Jose Comellas 2013-03-28 16:12:05 -03:00
parent 8fd9eae57d
commit 86058fbdca
1 changed files with 2 additions and 2 deletions
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4
src/getopt.erl
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@ -698,7 +698,7 @@ format_usage_line(_MaxOptionLength, _MaxLineLength, {_OptionLength, OptionText,
%% @doc Wrap a text line converting it into several text lines so that the
%% length of each one of them is never over HelpLength characters.
%% length of each one of them is never over Length characters.
-spec wrap_text_line(Length :: non_neg_integer(), Text :: string()) -> [string()].
wrap_text_line(Length, Text) ->
wrap_text_line(Length, Text, [], 0, []).
@ -730,7 +730,7 @@ default_arg_value_to_string(Value) when is_binary(Value) ->
default_arg_value_to_string(Value) when is_integer(Value) ->
integer_to_list(Value);
default_arg_value_to_string(Value) when is_float(Value) ->
float_to_list(Value);
lists:flatten(io_lib:format("~w", [Value]));
default_arg_value_to_string(Value) ->
Value.