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Annotation of embedaddon/ntp/libntp/ymd2yd.c, revision 1.1

1.1     ! misho       1: /*
        !             2:  * ymd2yd - compute the date in the year from y/m/d
        !             3:  */
        !             4: 
        !             5: #include "ntp_fp.h"
        !             6: #include "ntp_unixtime.h"
        !             7: #include "ntp_stdlib.h"
        !             8: 
        !             9: /*
        !            10:  * Tables to compute the day of year from yyyymmdd timecode.
        !            11:  * Viva la leap.
        !            12:  */
        !            13: static int day1tab[] = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
        !            14: static int day2tab[] = {31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
        !            15: 
        !            16: int
        !            17: ymd2yd(
        !            18:        int y,
        !            19:        int m,
        !            20:        int d
        !            21:        )
        !            22: {
        !            23:        int i, *t;
        !            24: 
        !            25:        if (m < 1 || m > 12 || d < 1)
        !            26:                return (-1);
        !            27: 
        !            28:        if (((y%4 == 0) && (y%100 != 0)) || (y%400 == 0))
        !            29:                t = day2tab;    /* leap year */
        !            30:        else
        !            31:                t = day1tab;    /* not a leap year */
        !            32:        if (d > t[m - 1])
        !            33:                return (-1);
        !            34:        for (i = 0; i < m - 1; i++)
        !            35:                d += t[i];
        !            36:        return d;
        !            37: }