On 12/17/07, Joneksi <[EMAIL PROTECTED]> wrote:
>
> Hi
>
> In erlsql.erl:
>
> encode(Val, false) when is_integer(Val) ->
> integer_to_list(Val);
> encode(Val, false) when is_float(Val) ->
> [Res] = io_lib:format("~w", [Val]),
> Res;
>
> Is there still a reason to not to use more accurate float_to_list?
>
> Eshell V5.5.5 (abort with ^G)
> 1> A=0.0000012345678.
> 1.23457e-6
> 2> io_lib:fwrite("~w", [A]).
> [["1.23457",101,45,54]]
> 3> float_to_list(A).
> "1.23456780000000008931e-06"
> 4>
You can get the best of both (compactness and accuracy) with mochinum:digits/1.
http://mochiweb.googlecode.com/svn/trunk/src/mochinum.erl
1> mochinum:digits(0.0000012345678).
"0.0000012345678"
2> float_to_list(0.1).
"1.00000000000000005551e-01"
3> mochinum:digits(0.1).
"0.1"
-bob
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