.TH fmt_httpdate 3 .SH NAME fmt_httpdate \- write a date in ASCII as in the HTTP protocol .SH SYNTAX .B #include size_t \fBfmt_httpdate\fP(char *\fIdest\fR,time_t \fIsource\fR); .SH DESCRIPTION fmt_httpdate writes a date in ASCII representation as the HTTP protocol defines it: "Sun, 06 Nov 1994 08:49:37 GMT". fmt_httpdate does not append \\0. If \fIdest\fR equals FMT_LEN (i.e. is zero), fmt_httpdate returns the number of bytes it would have written. The output of fmt_httpdate is 29 until Jan 1st 10000.