From ab27e8699ef2a2bafe574158200993f184de3dc2 Mon Sep 17 00:00:00 2001 From: Serge Aleynikov Date: Mon, 21 Jan 2013 15:36:43 +0100 Subject: Text representation of a float formatted using given options. 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 = {decimals, Decimals::0..249} | {scientific, Decimals::0..249} | compact Returns a string which corresponds to the text representation of a `Float` formatted using given options. When decimals option is specified the returned value will contain at most `Decimals` number of digits past the decimal point. When `compact` option is provided the trailing zeros at the end of the list are truncated (this option is only meaningful together with the `decimals` option). When `scientific` option is provided, the float will be formatted using scientific notation with `Decimals` digits of precision. If `Options` is `[]` the function behaves like `float_to_list/1`. When using `decimals` option and the number doesn't fit in the static internal buffer of 256 bytes the function throws `badarg`. --- lib/stdlib/src/erl_internal.erl | 1 + 1 file changed, 1 insertion(+) (limited to 'lib') diff --git a/lib/stdlib/src/erl_internal.erl b/lib/stdlib/src/erl_internal.erl index 3063881890..bf2fffbd97 100644 --- a/lib/stdlib/src/erl_internal.erl +++ b/lib/stdlib/src/erl_internal.erl @@ -278,6 +278,7 @@ bif(exit, 1) -> true; bif(exit, 2) -> true; bif(float, 1) -> true; bif(float_to_list, 1) -> true; +bif(float_to_list, 2) -> true; bif(garbage_collect, 0) -> true; bif(garbage_collect, 1) -> true; bif(get, 0) -> true; -- cgit v1.2.3