Function core::num::flt2dec::digits_to_dec_str

fn digits_to_dec_str<'a>(
    buf: &'a [u8],
    exp: i16,
    frac_digits: usize,
    parts: &'a mut [MaybeUninit<Part<'a>>]
) -> &'a [Part<'a>]

🔬This is a nightly-only experimental API. (flt2dec)

Formats given decimal digits 0.<...buf...> * 10^exp into the decimal form with at least given number of fractional digits. The result is stored to the supplied parts array and a slice of written parts is returned.

frac_digits can be less than the number of actual fractional digits in buf; it will be ignored and full digits will be printed. It is only used to print additional zeroes after rendered digits. Thus frac_digits of 0 means that it will only print given digits and nothing else.