ref: 21674aabd645829b4be407b084e399c46f5ccd6f
dir: /src/libc/libc.h/
#define SUN 0
#define MON 1
#define TUE 2
#define WED 3
#define THU 4
#define FRI 5
#define SAT 6
#define JAN 0
#define FEB 1
#define DEC 11
#define EPOCH 1970
#define FEBDAYS(y) ((_daysyear(y) == 366) ? 29 : 28)
#define SECMIN 60
#define SECHOUR (60 * SECMIN) /* 3600 */
#define SECDAY (24 * SECHOUR) /* 86400 */
struct tzone {
char *name;
int gmtoff;
int isdst;
};
struct tm;
extern struct tzone *_tzone(struct tm *tm);
extern int _daysyear(int year);
extern int _newyear(int year);
extern void *_getheap(void);
extern int _dtoi(char);
#ifdef stdin
extern int _flsbuf(FILE *fp);
extern int _allocbuf(FILE *fp);
extern FILE *_fpopen(const char * restrict fname,
const char * restrict mode,
FILE * restrict fp);
#endif
extern int _daysmon[12];