.TH fmt_ulong 3 .SH NAME fmt_ulong \- write an ASCII representation of an unsigned long integer .SH SYNTAX .B #include size_t \fBfmt_ulong\fP(char *\fIdest\fR,unsigned long \fIsource\fR); .SH DESCRIPTION fmt_ulong writes an ASCII representation ('0' to '9', base 10) of \fIsource\fR to \fIdest\fR and returns the number of bytes written. fmt_ulong does not append \\0. If \fIdest\fR equals FMT_LEN (i.e. is zero), fmt_ulong returns the number of bytes it would have written. For convenience, fmt.h defines the integer FMT_ULONG to be big enough to contain every possible fmt_ulong output plus \\0. .SH "SEE ALSO" scan_ulong(3)