fmt_strn (3)

#include <fmt.h>

size_t fmt_strn(char *dest,const char *source,

                      size_t maxlen);

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.

strncpy(3)