.TH fmt_longlong 3 .SH NAME fmt_longlong \- write an ASCII representation of a long long integer .SH SYNTAX .B #include size_t \fBfmt_longlong\fP(char *\fIdest\fR,long long \fIsource\fR); .SH DESCRIPTION fmt_longlong writes an ASCII representation ('-' and '0' to '9', base 10) of \fIsource\fR to \fIdest\fR and returns the number of bytes written. fmt_longlong does not append \\0. If \fIdest\fR equals FMT_LEN (i.e. is zero), fmt_longlong 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_longlong output plus \\0. .SH "SEE ALSO" scan_longlong(3)