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/**************************************************************************
* *
* Copyright (C) 1995 Silicon Graphics, Inc. *
* *
* These coded instructions, statements, and computer programs were *
* developed by SGI for public use. If any changes are made to this code*
* please try to get the changes back to the author. Feel free to make *
* modifications and changes to the code and release it. *
* *
**************************************************************************/
#ifndef WIN32
#include <netdb.h>
#include <sys/time.h>
#include <sys/param.h>
#else
#include <windows.h>
#include <winsock.h>
#include <time.h>
#endif /* WIN32 */
#include <math.h>
#include <stdio.h>
#include "sysdep.h"
#include "bench.h"
double
timevaldouble(struct timeval *tin)
{
return ((double)tin->tv_sec + ((double)tin->tv_usec / USECINSEC));
}
void
doubletimeval(const double tin, struct timeval *tout)
{
tout->tv_sec = (long)floor(tin);
tout->tv_usec = (long)((tin - tout->tv_sec) * USECINSEC );
}
void
addtime(struct timeval *OrigTime, struct timeval *NewTime)
{
OrigTime->tv_usec += NewTime->tv_usec;
if(OrigTime->tv_usec >= USECINSEC)
{
/*
* NEED TO CARRY 1.
*/
OrigTime->tv_sec++;
OrigTime->tv_usec -= USECINSEC;
}
OrigTime->tv_sec += NewTime->tv_sec;
}
void
compdifftime(struct timeval *EndTime, struct timeval *StartTime, struct timeval *DiffTime)
{
struct timeval endtime = *EndTime;
if((endtime.tv_usec - StartTime->tv_usec) < 0)
{
/*
* NEED TO BORROW.
*/
endtime.tv_usec += USECINSEC;
endtime.tv_sec--;
}
DiffTime->tv_usec = endtime.tv_usec - StartTime->tv_usec;
DiffTime->tv_sec = endtime.tv_sec - StartTime->tv_sec;
}
void
mintime(struct timeval *CurrMinTime, struct timeval *CheckMinTime)
{
if(CheckMinTime->tv_sec < CurrMinTime->tv_sec)
{
*CurrMinTime = *CheckMinTime;
return;
}
if(CheckMinTime->tv_sec == CurrMinTime->tv_sec)
{
if(CheckMinTime->tv_usec < CurrMinTime->tv_usec)
{
*CurrMinTime = *CheckMinTime;
return;
}
}
}
void
maxtime(struct timeval *CurrMaxTime, struct timeval *CheckMaxTime)
{
if(CheckMaxTime->tv_sec > CurrMaxTime->tv_sec)
{
*CurrMaxTime = *CheckMaxTime;
return;
}
if(CheckMaxTime->tv_sec == CurrMaxTime->tv_sec)
{
if(CheckMaxTime->tv_usec > CurrMaxTime->tv_usec)
{
*CurrMaxTime = *CheckMaxTime;
return;
}
}
}
void
avgtime(struct timeval *TotalTime, int NumTimes, struct timeval *AvgTime)
{
double meantime;
meantime = mean(timevaldouble(TotalTime), NumTimes);
doubletimeval(meantime, AvgTime);
}
void
sqtime(struct timeval *Time, struct timeval *SqTime)
{
double sec;
sec = timevaldouble(Time);
sec *= sec; /* square */
doubletimeval(sec, SqTime);
}
void
variancetime(struct timeval *SumTime, double SumSquareTime, int NumTimes, struct timeval *VarianceTime)
{
double result;
result = variance(timevaldouble(SumTime), SumSquareTime, NumTimes);
doubletimeval(result, VarianceTime);
}
void
stddevtime(struct timeval *SumTime, double SumSquareTime,
int NumTimes, struct timeval *StdDevTime)
{
double result;
result = stddev(timevaldouble(SumTime), SumSquareTime, NumTimes);
doubletimeval(result, StdDevTime);
}
double
thruputpersec(const double n, struct timeval *t)
{
double tv;
tv = timevaldouble(t);
if (tv != 0)
return n / timevaldouble(t);
else
return 0;
}
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