_conv_num
if (!(_conv_num(&bp, &i, 0, 99)))
if (!(_conv_num(&bp, &tm->tm_mday, 1, 31)))
if (!(_conv_num(&bp, &tm->tm_hour, 0, 23)))
if (!(_conv_num(&bp, &tm->tm_hour, 1, 12)))
if (!(_conv_num(&bp, &tm->tm_yday, 1, 366)))
if (!(_conv_num(&bp, &tm->tm_min, 0, 59)))
if (!(_conv_num(&bp, &tm->tm_mon, 1, 12)))
if (!(_conv_num(&bp, &tm->tm_sec, 0, 61)))
if (!(_conv_num(&bp, &i, 0, 53)))
if (!(_conv_num(&bp, &tm->tm_wday, 0, 6)))
if (!(_conv_num(&bp, &i, 0, 9999)))
if (!(_conv_num(&bp, &relyear, 0, 99)))
static int _conv_num(const unsigned char **, int *, int, int);