integer to string conversion

Hello everyone,

I was going to ask you about your opinion whether or not
the non-standard itoa-family of functions have a place in
dietlibc, when I discovered that the dietlibc features
__ltostr (and derivates). I've never seen that before,
Internet says they come from HP-UX.

Anyway, these functions do what I want but I dislike
the interface. I looked at what embutils uses for that
purpose and found that they use own versions called
fmt_ulong etc. with an interface more like the K&R 2
itoa.

Now what I would like is a function family in the
dietlibc that looks like the following:
         int itoa(int n, char *buf, int base)
returning the length of n in characters.

Do you think, a libc is the right place for those?
After all, they are not "less standard" than the
__ltostr functions, are they?
And (on a side note), why doesn't embutils use
__ltostr?

Thanks in advance from a slightly confused guy.

Richard