time.h

包含哈希,对称以及非对称的经典算法 包含经典事例

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#pragma ident "@(#)Time.h	1.8 96/01/29 Sun Microsystems"

#ifndef TIME_H
#define TIME_H

/*
 * Time class
 */
#include "my_types.h"

struct GMtime {
	int	year;
	int	month;
	int	day;
	int	hour;
	int	min;
	int	sec;
};

class PCTime {
	// Time expressed as GMT time
	int	year;
	int	month;
	int	day;
	int	hour;
	int	min;
	int	sec;
  public:
	// Constructors
	PCTime() {year=month=day=hour=min=sec=0;};
	PCTime(int, int, int, int, int, int);
	PCTime(const GMtime&);
	// Member functions and operators
	GMtime get() const;
	friend Boolean operator <(const PCTime &, const PCTime &);
	friend Boolean operator >(const PCTime &, const PCTime &);
	friend Boolean operator !=(const PCTime &, const PCTime &);
	friend Boolean operator ==(const PCTime &, const PCTime &);
	friend Boolean operator <=(const PCTime &, const PCTime &);
	friend Boolean operator >=(const PCTime &, const PCTime &);
	void print() const;		/* Print out time val */
	String getstr() const;
	unsigned long ntptime();
};

extern PCTime timenow();

// Unix start
#define UNIXSTART	2208988800	// 1-1-70 0h in NTP time

// time now in NTP
#define NTPNOW		(time(0) + UNIXSTART)

#endif TIME_H