fmt_long - write an ASCII representation of a long integer

       fmt_long  writes  an ASCII representation ('-' and '0' to '9', base 10) of source to dest and returns the
       number of bytes written.

       fmt_long does not append \0.

       If dest equals FMT_LEN (i.e. is zero), fmt_long returns the number of bytes it would have written.

       For convenience, fmt.h defines the integer FMT_LONG to be big enough to contain every  possible  fmt_long
       output plus \0.

       fmt_long - write an ASCII representation of a long integer

scan_long(3)

                                                                                                     fmt_long(3)

#include<libowfat/fmt.h>

       size_t fmt_long(char *dest,long source);