1*24011Ssam /* clock.h 4.5 81/02/23 */ 2*24011Ssam 3*24011Ssam #define SECDAY ((unsigned)(24*60*60)) /* seconds per day */ 4*24011Ssam #define SECYR ((unsigned)(365*SECDAY)) /* per common year */ 5*24011Ssam 6*24011Ssam #define YRREF 1970 7*24011Ssam #define LEAPYEAR(year) ((year)%4==0) /* good till time becomes negative */ 8*24011Ssam 9*24011Ssam /* 10*24011Ssam * Software clock is software interrupt level 8 11*24011Ssam */ 12*24011Ssam #define setsoftclock() mtpr(0x8, SIRR) 13