[patch] new float_to_list/2
Serge Aleynikov
serge@REDACTED
Wed Jan 12 06:44:08 CET 2011
Attached please find a patch that adds a new float_to_list/2 BIF. The
patch was created off of the master branch of https://github.com/erlang/otp.
This BIF solves a problem of float_to_list/1 that doesn't allow
specifying the number of digits after the decimal point when formatting
floats.
float_to_list(Float, Options) -> string()
Float = float()
Options = [Option]
Option = {precision, Precision::integer()} | compact
Text representation of a float formatted using given options
Returns a string which corresponds to the text
representation of Float using fixed decimal point formatting.
When precision option is specified
the returned value will contain at most Precision number of
digits past the decimal point. When compact option is provided
the trailing zeros at the end of the list are truncated.
1> float_to_list(7.12, [{precision, 4}]).
"7.1200"
2> float_to_list(7.12, [{precision, 4}, compact]).
"7.12"
Documentation and test cases are updated to reflect the changes.
Though I included identical support for this new bif in unix/win/vxworks
I only tested it on Linux.
Regards,
Serge
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