fmt_strn(3) - Linux man page
Name
fmt_strn - write an ASCII stringSyntax
#include <fmt.h>size_t fmt_strn(char *dest,const char *source, size_t maxlen);
Description
fmt_str copies at most maxlen leading nonzero bytes from source to dest and returns the number of bytes it copied.fmt_str does not append \0.
If dest equals FMT_LEN (i.e. is zero), fmt_strn returns the number of bytes it would have written.