1 /* $NetBSD: ymd2yd.c,v 1.5 2020/05/25 20:47:25 christos Exp $ */ 2 3 /* 4 * ymd2yd - compute the date in the year from y/m/d 5 * 6 * A thin wrapper around a more general calendar function. 7 */ 8 9 #include <config.h> 10 #include "ntp_stdlib.h" 11 #include "ntp_calendar.h" 12 13 int 14 ymd2yd( 15 int y, 16 int m, 17 int d) 18 { 19 /* 20 * convert y/m/d to elapsed calendar units, convert that to 21 * elapsed days since the start of the given year and convert 22 * back to unity-based day in year. 23 * 24 * This does no further error checking, since the underlying 25 * function is assumed to work out how to handle the data. 26 */ 27 return ntpcal_edate_to_yeardays(y-1, m-1, d-1) + 1; 28 } 29