/*?arith.c?*/
?
#include?“ptpd.h“


void?integer64_to_internalTime（Integer64?bigintTimeInternal?*internal）
{
	int?s_msb;
	double?ns_msb;
	double?temp;
	int?entire;
	char??*p_lsb*p_msb;
	Boolean?negative?=?FALSE;

	p_lsb=&bigint.lsb;
	p_msb=&bigint.msb;
	
	/*Test?if?bigint?is?a?negative?number*/
	negative?=?（（bigint.msb?&?0x80000000）?==?0x80000000）;
	
	if?（!negative）
	{
	??/*Positive?case*/
		
			/*fractional?nanoseconds?are?excluded?（see?5.3.2）*/
			bigint.lsb?=?bigint.lsb>>16;?
			/*copy?two?least?significant?octet?of?msb?to?most?significant?octet?of?lsb*/
			*（p_lsb+2）=*p_msb;
			*（p_lsb+3）=*（p_msb+1）;
			bigint.msb?=?bigint.msb>>16;
		
			internal->nanoseconds?=?bigint.lsb?%?1000000000;
			internal->seconds?=?bigint.lsb?/?1000000000;
			
			/*（2^32?/?10^9）?=?4294967296*/
			s_msb?=?4*bigint.msb;
			ns_msb?=?0.294967296*（double）bigint.msb;
			entire?=?（int）ns_msb;
			s_msb?+=?entire;
			ns_msb?-=?entire;
			ns_msb?*=?1000000000;
			internal->nanoseconds?=?（float）internal->nanoseconds?+?（float）ns_msb;
			internal->seconds?+=?s_msb;
			normalizeTime（internal）;
			
	}
	?/*End?of?positive?Case*/
			
	else
	{	?/*Negative?case*/

			/*Take?the?two?complement*/
			bigint.lsb?=?~bigint.lsb;
			bigint.msb?=?~bigint.msb;
			
			if?（bigint.lsb?==?0xffffffff）{
				bigint.lsb?=?0;
				bigint.msb++;
			}
			else{
			bigint.lsb++;
			}
			
			/*fractional?nanoseconds?are?excluded?（see?5.3.2）*/
			bigint.lsb?=?bigint.lsb>>16;?
			/*copy?two?least?significant?octet?of?msb?to?most?significant?octet?of?lsb*/
			*（p_lsb+2）=*p_msb;
			*（p_lsb+3）=*（p_msb+1）;
			bigint.msb?=?bigint.msb>>16;

			internal->nanoseconds?=?bigint.lsb?%?1000000000;
			internal->seconds?=?bigint.lsb?/?1000000000;
		
			/*（2^32?/?10^9）?=?4294967296*/
			s_msb?=?4*bigint.msb;
			ns_msb?=?0.294967296*（double）bigint.msb;
			entire?=?（int）ns_msb;
			s_msb?+=?entire;
			ns_msb?-=?entire;
			ns_msb?*=?1000000000;
			
			internal->nanoseconds?=?（float）internal->nanoseconds?+?（float）ns_msb;
			internal->seconds?+=?s_msb;
			normalizeTime（internal）;
			
			internal->nanoseconds?=?-internal->nanoseconds;
			internal->seconds?=?-internal->seconds;
	}
		/*End?of?negative?Case*/
}


void?fromInternalTime（TimeInternal?*internal?Timestamp?*external）
{
??
??/*fromInternalTime?is?only?used?to?convert?time?given?by?the?system?to?a?timestamp
???*?As?a?consequence?no?negative?value?can?normally?be?found?in?（internal）
???
???*?Note?that?offsets?are?also?represented?with?TimeInternal?structure?and?can?be?negative?
???*?but?offset?are?never?convert?into?Timestamp?so?there?is?no?problem?here.*/
???
???if?（（internal->seconds?&?~INT_MAX）?||?（internal->nanoseconds?&?~INT_MAX））
???{
???	DBG（“Negative?value?canno‘t?be?converted?into?timestamp?\n“）;
???	return;
???}
???else
???{??
??	external->secondsField.lsb?=?internal->seconds;
??	external->nanosecondsField?=?internal->nanoseconds;
??	external->secondsField.msb?=?0;?
???}

}

void?toInternalTime（TimeInternal?*internal?Timestamp?*external）
{
	
	/*Program?will?

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件????????958??2010-03-17?05:07??ptpv2d-rc1\COPYRIGHT

?????文件???????1396??2010-03-17?04:57??ptpv2d-rc1\README

?????文件????????860??2010-03-17?04:57??ptpv2d-rc1\RELEASE_NOTES

?????文件????????478??2010-03-17?04:57??ptpv2d-rc1\tools\filter_response.m

?????文件???????1987??2010-03-17?04:57??ptpv2d-rc1\tools\offset_stats.m

?????文件???????4036??2010-03-17?04:57??ptpv2d-rc1\src\arith.c

?????文件??????11783??2010-03-17?04:57??ptpv2d-rc1\src\bmc.c

?????文件???????4054??2010-03-17?04:57??ptpv2d-rc1\src\constants.h

?????文件???????9187??2010-05-21?10:39??ptpv2d-rc1\src\datatypes.h

?????文件??????13945??2010-03-17?04:57??ptpv2d-rc1\src\display.c

?????文件??????63409??2010-03-17?04:57??ptpv2d-rc1\src\Doxyfile

?????文件????????607??2010-03-17?04:57??ptpv2d-rc1\src\Makefile

?????文件??????38561??2010-03-17?04:57??ptpv2d-rc1\src\protocol.c

?????文件???????2453??2010-03-17?04:57??ptpv2d-rc1\src\ptpd.8

?????文件???????1404??2010-03-17?04:57??ptpv2d-rc1\src\ptpd.c

?????文件???????3431??2010-03-17?04:57??ptpv2d-rc1\src\ptpd.h

?????文件???????2102??2010-03-17?04:57??ptpv2d-rc1\src\dep\constants_dep.h

?????文件???????1619??2010-03-17?04:57??ptpv2d-rc1\src\dep\datatypes_dep.h

?????文件??????13028??2010-03-17?04:57??ptpv2d-rc1\src\dep\msg.c

?????文件??????19776??2010-03-17?04:57??ptpv2d-rc1\src\dep\net.c

?????文件???????5049??2010-03-17?04:57??ptpv2d-rc1\src\dep\ptpd_dep.h

?????文件???????7870??2010-03-17?04:57??ptpv2d-rc1\src\dep\servo.c

?????文件???????6193??2010-03-17?04:57??ptpv2d-rc1\src\dep\startup.c

?????文件???????2566??2010-03-17?04:57??ptpv2d-rc1\src\dep\sys.c

?????文件???????1661??2010-03-17?04:57??ptpv2d-rc1\src\dep\timer.c

?????文件?????272225??2010-03-17?05:08??ptpv2d-rc1\doc\IEEE1588v1_vs_IEEE1588v2.pdf

?????文件????3604766??2010-05-21?16:17??ptpv2d-rc1\doc\IEEE1588協議分析與實現.nh

?????文件?????163245??2010-05-13?09:57??ptpv2d-rc1\doc\ix1588V2.pdf

?????文件?????718848??2010-05-21?17:01??ptpv2d-rc1\doc\移植需要.wps

?????目錄??????????0??2010-05-22?21:33??ptpv2d-rc1\src\dep

............此處省略7個文件信息