The standard library functions have to be provided by someone. In bare metal/deep embedded work, that someone is YOU.
So anything is possible. Anything. Though if you're unlucky enough to have untrustworthy hardware, or just not-yet-trustworthy hardware, that's usually enough to keep the nasal demons at bay (even they fear malfunctioning hardware), which is one small mercy.
So anything is possible. Anything. Though if you're unlucky enough to have untrustworthy hardware, or just not-yet-trustworthy hardware, that's usually enough to keep the nasal demons at bay (even they fear malfunctioning hardware), which is one small mercy.