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cloudstack/thirdparty/nbench-byte-2.2.3/nbench0.c
Frank e9652e67ad migrate premium to oss
2011-01-28 16:07:46 -08:00

1191 lines
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/*
** nbench0.c
*/
/*******************************************
** BYTEmark (tm) **
** BYTE MAGAZINE'S NATIVE MODE BENCHMARKS **
** FOR CPU/FPU **
** ver 2.0 **
** Rick Grehan, BYTE Magazine **
********************************************
** NOTE: These benchmarks do NOT check for the presence
** of an FPU. You have to find that out manually.
**
** REVISION HISTORY FOR BENCHMARKS
** 9/94 -- First beta. --RG
** 12/94 -- Bug discovered in some of the integer routines
** (IDEA, Huffman,...). Routines were not accurately counting
** the number of loops. Fixed. --RG (Thanks to Steve A.)
** 12/94 -- Added routines to calculate and display index
** values. Indexes based on DELL XPS 90 (90 MHz Pentium).
** 1/95 -- Added Mac time manager routines for more accurate
** timing on Macintosh (said to be good to 20 usecs) -- RG
** 1/95 -- Re-did all the #defines so they made more
** sense. See NMGLOBAL.H -- RG
** 3/95 -- Fixed memory leak in LU decomposition. Did not
** invalidate previous results, just made it easier to run.--RG
** 3/95 -- Added TOOLHELP.DLL timing routine to Windows timer. --RG
** 10/95 -- Added memory array & alignment; moved memory
** allocation out of LU Decomposition -- RG
**
** DISCLAIMER
** The source, executable, and documentation files that comprise
** the BYTEmark benchmarks are made available on an "as is" basis.
** This means that we at BYTE Magazine have made every reasonable
** effort to verify that the there are no errors in the source and
** executable code. We cannot, however, guarantee that the programs
** are error-free. Consequently, McGraw-HIll and BYTE Magazine make
** no claims in regard to the fitness of the source code, executable
** code, and documentation of the BYTEmark.
** Furthermore, BYTE Magazine, McGraw-Hill, and all employees
** of McGraw-Hill cannot be held responsible for any damages resulting
** from the use of this code or the results obtained from using
** this code.
*/
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <string.h>
#include <time.h>
#include <math.h>
#include "nmglobal.h"
#include "nbench0.h"
#include "hardware.h"
/*************
**** main ****
*************/
#ifdef MAC
void main(void)
#else
int main(int argc, char *argv[])
#endif
{
int i; /* Index */
time_t time_and_date; /* Self-explanatory */
struct tm *loctime;
double bmean; /* Benchmark mean */
double bstdev; /* Benchmark stdev */
double lx_memindex; /* Linux memory index (mainly integer operations)*/
double lx_intindex; /* Linux integer index */
double lx_fpindex; /* Linux floating-point index */
double intindex; /* Integer index */
double fpindex; /* Floating-point index */
ulong bnumrun; /* # of runs */
#ifdef MAC
MaxApplZone();
#endif
#ifdef MACTIMEMGR
/* Set up high res timer */
MacHSTdelay=600*1000*1000; /* Delay is 10 minutes */
memset((char *)&myTMTask,0,sizeof(TMTask));
/* Prime and remove the task, calculating overhead */
PrimeTime((QElemPtr)&myTMTask,-MacHSTdelay);
RmvTime((QElemPtr)&myTMTask);
MacHSTohead=MacHSTdelay+myTMTask.tmCount;
#endif
#ifdef WIN31TIMER
/* Set up the size of the timer info structure */
win31tinfo.dwSize=(DWORD)sizeof(TIMERINFO);
/* Load library */
if((hThlp=LoadLibrary("TOOLHELP.DLL"))<32)
{ printf("Error loading TOOLHELP\n");
exit(0);
}
if(!(lpfn=GetProcAddress(hThlp,"TimerCount")))
{ printf("TOOLHELP error\n");
exit(0);
}
#endif
/*
** Set global parameters to default.
*/
global_min_ticks=MINIMUM_TICKS;
global_min_seconds=MINIMUM_SECONDS;
global_allstats=0;
global_custrun=0;
global_align=8;
write_to_file=0;
lx_memindex=(double)1.0; /* set for geometric mean computations */
lx_intindex=(double)1.0;
lx_fpindex=(double)1.0;
intindex=(double)1.0;
fpindex=(double)1.0;
mem_array_ents=0; /* Nothing in mem array */
/*
** We presume all tests will be run unless told
** otherwise
*/
for(i=0;i<NUMTESTS;i++)
tests_to_do[i]=1;
/* Don't do floating point */
tests_to_do[4] = tests_to_do[8] = tests_to_do[9] = 0;
/*
** Initialize test data structures to default
** values.
*/
set_request_secs(); /* Set all request_secs fields */
global_numsortstruct.adjust=0;
global_numsortstruct.arraysize=NUMARRAYSIZE;
global_strsortstruct.adjust=0;
global_strsortstruct.arraysize=STRINGARRAYSIZE;
global_bitopstruct.adjust=0;
global_bitopstruct.bitfieldarraysize=BITFARRAYSIZE;
global_emfloatstruct.adjust=0;
global_emfloatstruct.arraysize=EMFARRAYSIZE;
global_fourierstruct.adjust=0;
global_assignstruct.adjust=0;
global_ideastruct.adjust=0;
global_ideastruct.arraysize=IDEAARRAYSIZE;
global_huffstruct.adjust=0;
global_huffstruct.arraysize=HUFFARRAYSIZE;
global_nnetstruct.adjust=0;
global_lustruct.adjust=0;
/*
** For Macintosh -- read the command line.
*/
#ifdef MAC
UCommandLine();
#endif
/*
** Handle any command-line arguments.
*/
if(argc>1)
for(i=1;i<argc;i++)
if(parse_arg(argv[i])==-1)
{ display_help(argv[0]);
exit(0);
}
/*
** Output header
*/
#ifdef LINUX
/*
output_string("\nBYTEmark* Native Mode Benchmark ver. 2 (10/95)\n");
output_string("Index-split by Andrew D. Balsa (11/97)\n");
output_string("Linux/Unix* port by Uwe F. Mayer (12/96,11/97)\n");
*/
#else
output_string("BBBBBB YYY Y TTTTTTT EEEEEEE\n");
output_string("BBB B YYY Y TTT EEE\n");
output_string("BBB B YYY Y TTT EEE\n");
output_string("BBBBBB YYY Y TTT EEEEEEE\n");
output_string("BBB B YYY TTT EEE\n");
output_string("BBB B YYY TTT EEE\n");
output_string("BBBBBB YYY TTT EEEEEEE\n\n");
output_string("\nBYTEmark (tm) Native Mode Benchmark ver. 2 (10/95)\n");
#endif
/*
** See if the user wants all stats. Output heading info
** if so.
*/
if(global_allstats)
{
output_string("\n");
output_string("============================== ALL STATISTICS ===============================\n");
time(&time_and_date);
loctime=localtime(&time_and_date);
sprintf(buffer,"**Date and time of benchmark run: %s",asctime(loctime));
output_string(buffer);
sprintf(buffer,"**Sizeof: char:%u short:%u int:%u long:%u u8:%u u16:%u u32:%u int32:%u\n",
(unsigned int)sizeof(char),
(unsigned int)sizeof(short),
(unsigned int)sizeof(int),
(unsigned int)sizeof(long),
(unsigned int)sizeof(u8),
(unsigned int)sizeof(u16),
(unsigned int)sizeof(u32),
(unsigned int)sizeof(int32));
output_string(buffer);
#ifdef LINUX
#include "sysinfo.c"
#else
sprintf(buffer,"**%s\n",sysname);
output_string(buffer);
sprintf(buffer,"**%s\n",compilername);
output_string(buffer);
sprintf(buffer,"**%s\n",compilerversion);
output_string(buffer);
#endif
output_string("=============================================================================\n");
}
/*
** Execute the tests.
*/
#ifdef LINUX
/*
output_string("\nTEST : Iterations/sec. : Old Index : New Index\n");
output_string(" : : Pentium 90* : AMD K6/233*\n");
output_string("--------------------:------------------:-------------:------------\n");
*/
#endif
for(i=0;i<NUMTESTS;i++)
{
if(tests_to_do[i])
{ /* sprintf(buffer,"%s :",ftestnames[i]);
output_string(buffer);
*/
if (0!=bench_with_confidence(i,
&bmean,
&bstdev,
&bnumrun)){
/*
output_string("\n** WARNING: The current test result is NOT 95 % statistically certain.\n");
output_string("** WARNING: The variation among the individual results is too large.\n");
output_string(" :");
*/
}
#ifdef LINUX
sprintf(buffer," %15.5g : %9.2f : %9.2f\n",
bmean,bmean/bindex[i],bmean/lx_bindex[i]);
#else
sprintf(buffer," Iterations/sec.: %13.2f Index: %6.2f\n",
bmean,bmean/bindex[i]);
#endif
/*
output_string(buffer);
*/
/*
** Gather integer or FP indexes
*/
if((i==4)||(i==8)||(i==9)){
/* FP index */
fpindex=fpindex*(bmean/bindex[i]);
/* Linux FP index */
lx_fpindex=lx_fpindex*(bmean/lx_bindex[i]);
}
else{
/* Integer index */
intindex=intindex*(bmean/bindex[i]);
if((i==0)||(i==3)||(i==6)||(i==7))
/* Linux integer index */
lx_intindex=lx_intindex*(bmean/lx_bindex[i]);
else
/* Linux memory index */
lx_memindex=lx_memindex*(bmean/lx_bindex[i]);
}
if(global_allstats)
{
sprintf(buffer," Absolute standard deviation: %g\n",bstdev);
output_string(buffer);
if (bmean>(double)1e-100){
/* avoid division by zero */
sprintf(buffer," Relative standard deviation: %g %%\n",
(double)100*bstdev/bmean);
output_string(buffer);
}
sprintf(buffer," Number of runs: %lu\n",bnumrun);
output_string(buffer);
show_stats(i);
sprintf(buffer,"Done with %s\n\n",ftestnames[i]);
output_string(buffer);
}
}
}
/* printf("...done...\n"); */
/*
** Output the total indexes
*/
if(global_custrun==0)
{
sprintf(buffer,"%d\n",
(int)(pow(intindex,(double).142857)*30.0));
output_string(buffer);
/*
output_string("==========================ORIGINAL BYTEMARK RESULTS==========================\n");
sprintf(buffer,"INTEGER INDEX : %.3f\n",
pow(intindex,(double).142857));
output_string(buffer);
sprintf(buffer,"FLOATING-POINT INDEX: %.3f\n",
pow(fpindex,(double).33333));
output_string(buffer);
output_string("Baseline (MSDOS*) : Pentium* 90, 256 KB L2-cache, Watcom* compiler 10.0\n");
#ifdef LINUX
output_string("==============================LINUX DATA BELOW===============================\n");
hardware(write_to_file, global_ofile);
#include "sysinfoc.c"
sprintf(buffer,"MEMORY INDEX : %.3f\n",
pow(lx_memindex,(double).3333333333));
output_string(buffer);
sprintf(buffer,"INTEGER INDEX : %.3f\n",
pow(lx_intindex,(double).25));
output_string(buffer);
sprintf(buffer,"FLOATING-POINT INDEX: %.3f\n",
pow(lx_fpindex,(double).3333333333));
output_string(buffer);
output_string("Baseline (LINUX) : AMD K6/233*, 512 KB L2-cache, gcc 2.7.2.3, libc-5.4.38\n");
#endif
output_string("* Trademarks are property of their respective holder.\n");
*/
}
exit(0);
}
/**************
** parse_arg **
***************
** Given a pointer to a string, we assume that's an argument.
** Parse that argument and act accordingly.
** Return 0 if ok, else return -1.
*/
static int parse_arg(char *argptr)
{
int i; /* Index */
FILE *cfile; /* Command file identifier */
/*
** First character has got to be a hyphen.
*/
if(*argptr++!='-') return(-1);
/*
** Convert the rest of the argument to upper case
** so there's little chance of confusion.
*/
for(i=0;i<strlen(argptr);i++)
argptr[i]=(char)toupper((int)argptr[i]);
/*
** Next character picks the action.
*/
switch(*argptr++)
{
case '?': return(-1); /* Will display help */
case 'V': global_allstats=1; return(0); /* verbose mode */
case 'C': /* Command file name */
/*
** First try to open the file for reading.
*/
cfile=fopen(argptr,"r");
if(cfile==(FILE *)NULL)
{ printf("**Error opening file: %s\n",argptr);
return(-1);
}
read_comfile(cfile); /* Read commands */
fclose(cfile);
break;
default:
return(-1);
}
return(0);
}
/*******************
** display_help() **
********************
** Display a help message showing argument requirements and such.
** Exit when you're done...I mean, REALLY exit.
*/
void display_help(char *progname)
{
printf("Usage: %s [-v] [-c<FILE>]\n",progname);
printf(" -v = verbose\n");
printf(" -c = input parameters thru command file <FILE>\n");
exit(0);
}
/*****************
** read_comfile **
******************
** Read the command file. Set global parameters as
** specified. This routine assumes that the command file
** is already open.
*/
static void read_comfile(FILE *cfile)
{
char inbuf[40];
char *eptr; /* Offset to "=" sign */
int i; /* Index */
/*
** Sit in a big loop, reading a line from the file at each
** pass. Terminate on EOF.
*/
while(fgets(inbuf,39,cfile)!=(char *)NULL)
{
/* Overwrite the CR character */
if(strlen(inbuf)>0)
inbuf[strlen(inbuf)-1]='\0';
/*
** Parse up to the "=" sign. If we don't find an
** "=", then flag an error.
*/
if((eptr=strchr(inbuf,(int)'='))==(char *)NULL)
{ printf("**COMMAND FILE ERROR at LINE:\n %s\n",
inbuf);
goto skipswitch; /* A GOTO!!!! */
}
/*
** Insert a null where the "=" was, then convert
** the substring to uppercase. That will enable
** us to perform the match.
*/
*eptr++='\0';
strtoupper((char *)&inbuf[0]);
i=MAXPARAM;
do {
if(strcmp(inbuf,paramnames[i])==0)
break;
} while(--i>=0);
if(i<0)
{ printf("**COMMAND FILE ERROR -- UNKNOWN PARAM: %s",
inbuf);
goto skipswitch;
}
/*
** Advance eptr to the next field...which should be
** the value assigned to the parameter.
*/
switch(i)
{
case PF_GMTICKS: /* GLOBALMINTICKS */
global_min_ticks=(ulong)atol(eptr);
break;
case PF_MINSECONDS: /* MINSECONDS */
global_min_seconds=(ulong)atol(eptr);
set_request_secs();
break;
case PF_ALLSTATS: /* ALLSTATS */
global_allstats=getflag(eptr);
break;
case PF_OUTFILE: /* OUTFILE */
strcpy(global_ofile_name,eptr);
global_ofile=fopen(global_ofile_name,"a");
/*
** Open the output file.
*/
if(global_ofile==(FILE *)NULL)
{ printf("**Error opening output file: %s\n",
global_ofile_name);
ErrorExit();
}
write_to_file=-1;
break;
case PF_CUSTOMRUN: /* CUSTOMRUN */
global_custrun=getflag(eptr);
for(i=0;i<NUMTESTS;i++)
tests_to_do[i]=1-global_custrun;
break;
case PF_DONUM: /* DONUMSORT */
tests_to_do[TF_NUMSORT]=getflag(eptr);
break;
case PF_NUMNUMA: /* NUMNUMARRAYS */
global_numsortstruct.numarrays=
(ushort)atoi(eptr);
global_numsortstruct.adjust=1;
break;
case PF_NUMASIZE: /* NUMARRAYSIZE */
global_numsortstruct.arraysize=
(ulong)atol(eptr);
break;
case PF_NUMMINS: /* NUMMINSECONDS */
global_numsortstruct.request_secs=
(ulong)atol(eptr);
break;
case PF_DOSTR: /* DOSTRINGSORT */
tests_to_do[TF_SSORT]=getflag(eptr);
break;
case PF_STRASIZE: /* STRARRAYSIZE */
global_strsortstruct.arraysize=
(ulong)atol(eptr);
break;
case PF_NUMSTRA: /* NUMSTRARRAYS */
global_strsortstruct.numarrays=
(ushort)atoi(eptr);
global_strsortstruct.adjust=1;
break;
case PF_STRMINS: /* STRMINSECONDS */
global_strsortstruct.request_secs=
(ulong)atol(eptr);
break;
case PF_DOBITF: /* DOBITFIELD */
tests_to_do[TF_BITOP]=getflag(eptr);
break;
case PF_NUMBITOPS: /* NUMBITOPS */
global_bitopstruct.bitoparraysize=
(ulong)atol(eptr);
global_bitopstruct.adjust=1;
break;
case PF_BITFSIZE: /* BITFIELDSIZE */
global_bitopstruct.bitfieldarraysize=
(ulong)atol(eptr);
break;
case PF_BITMINS: /* BITMINSECONDS */
global_bitopstruct.request_secs=
(ulong)atol(eptr);
break;
case PF_DOEMF: /* DOEMF */
tests_to_do[TF_FPEMU]=getflag(eptr);
break;
case PF_EMFASIZE: /* EMFARRAYSIZE */
global_emfloatstruct.arraysize=
(ulong)atol(eptr);
break;
case PF_EMFLOOPS: /* EMFLOOPS */
global_emfloatstruct.loops=
(ulong)atol(eptr);
break;
case PF_EMFMINS: /* EMFMINSECOND */
global_emfloatstruct.request_secs=
(ulong)atol(eptr);
break;
case PF_DOFOUR: /* DOFOUR */
tests_to_do[TF_FFPU]=getflag(eptr);
break;
case PF_FOURASIZE: /* FOURASIZE */
global_fourierstruct.arraysize=
(ulong)atol(eptr);
global_fourierstruct.adjust=1;
break;
case PF_FOURMINS: /* FOURMINSECONDS */
global_fourierstruct.request_secs=
(ulong)atol(eptr);
break;
case PF_DOASSIGN: /* DOASSIGN */
tests_to_do[TF_ASSIGN]=getflag(eptr);
break;
case PF_AARRAYS: /* ASSIGNARRAYS */
global_assignstruct.numarrays=
(ulong)atol(eptr);
break;
case PF_ASSIGNMINS: /* ASSIGNMINSECONDS */
global_assignstruct.request_secs=
(ulong)atol(eptr);
break;
case PF_DOIDEA: /* DOIDEA */
tests_to_do[TF_IDEA]=getflag(eptr);
break;
case PF_IDEAASIZE: /* IDEAARRAYSIZE */
global_ideastruct.arraysize=
(ulong)atol(eptr);
break;
case PF_IDEALOOPS: /* IDEALOOPS */
global_ideastruct.loops=
(ulong)atol(eptr);
break;
case PF_IDEAMINS: /* IDEAMINSECONDS */
global_ideastruct.request_secs=
(ulong)atol(eptr);
break;
case PF_DOHUFF: /* DOHUFF */
tests_to_do[TF_HUFF]=getflag(eptr);
break;
case PF_HUFFASIZE: /* HUFFARRAYSIZE */
global_huffstruct.arraysize=
(ulong)atol(eptr);
break;
case PF_HUFFLOOPS: /* HUFFLOOPS */
global_huffstruct.loops=
(ulong)atol(eptr);
global_huffstruct.adjust=1;
break;
case PF_HUFFMINS: /* HUFFMINSECONDS */
global_huffstruct.request_secs=
(ulong)atol(eptr);
break;
case PF_DONNET: /* DONNET */
tests_to_do[TF_NNET]=getflag(eptr);
break;
case PF_NNETLOOPS: /* NNETLOOPS */
global_nnetstruct.loops=
(ulong)atol(eptr);
global_nnetstruct.adjust=1;
break;
case PF_NNETMINS: /* NNETMINSECONDS */
global_nnetstruct.request_secs=
(ulong)atol(eptr);
break;
case PF_DOLU: /* DOLU */
tests_to_do[TF_LU]=getflag(eptr);
break;
case PF_LUNARRAYS: /* LUNUMARRAYS */
global_lustruct.numarrays=
(ulong)atol(eptr);
global_lustruct.adjust=1;
break;
case PF_LUMINS: /* LUMINSECONDS */
global_lustruct.request_secs=
(ulong)atol(eptr);
break;
case PF_ALIGN: /* ALIGN */
global_align=atoi(eptr);
break;
}
skipswitch:
continue;
} /* End while */
return;
}
/************
** getflag **
*************
** Return 1 if cptr points to "T"; 0 otherwise.
*/
static int getflag(char *cptr)
{
if(toupper((int)*cptr)=='T') return(1);
return(0);
}
/***************
** strtoupper **
****************
** Convert's a string to upper case. The string is presumed
** to consist only of alphabetic characters, and to be terminated
** with a null.
*/
static void strtoupper(char *s)
{
do {
/*
** Oddly enough, the following line did not work under THINK C.
** So, I modified it....hmmmm. --RG
*s++=(char)toupper((int)*s);
*/
*s=(char)toupper((int)*s);
s++;
} while(*s!=(char)'\0');
return;
}
/*********************
** set_request_secs **
**********************
** Set everyone's "request_secs" entry to whatever
** value is in global_min_secs. This is done
** at the beginning, and possibly later if the
** user redefines global_min_secs in the command file.
*/
static void set_request_secs(void)
{
global_numsortstruct.request_secs=global_min_seconds;
global_strsortstruct.request_secs=global_min_seconds;
global_bitopstruct.request_secs=global_min_seconds;
global_emfloatstruct.request_secs=global_min_seconds;
global_fourierstruct.request_secs=global_min_seconds;
global_assignstruct.request_secs=global_min_seconds;
global_ideastruct.request_secs=global_min_seconds;
global_huffstruct.request_secs=global_min_seconds;
global_nnetstruct.request_secs=global_min_seconds;
global_lustruct.request_secs=global_min_seconds;
return;
}
/**************************
** bench_with_confidence **
***************************
** Given a benchmark id that indicates a function, this routine
** repeatedly calls that benchmark, seeking to collect and replace
** scores to get 5 that meet the confidence criteria.
**
** The above is mathematically questionable, as the statistical theory
** depends on independent observations, and if we exchange data points
** depending on what we already have then this certainly violates
** independence of the observations. Hence I changed this so that at
** most 30 observations are done, but none are deleted as we go
** along. We simply do more runs and hope to get a big enough sample
** size so that things stabilize. Uwe F. Mayer
**
** Return 0 if ok, -1 if failure. Returns mean
** and std. deviation of results if successful.
*/
static int bench_with_confidence(int fid, /* Function id */
double *mean, /* Mean of scores */
double *stdev, /* Standard deviation */
ulong *numtries) /* # of attempts */
{
double myscores[30]; /* Need at least 5 scores, use at most 30 */
double c_half_interval; /* Confidence half interval */
int i; /* Index */
/* double newscore; */ /* For improving confidence interval */
/*
** Get first 5 scores. Then begin confidence testing.
*/
for (i=0;i<2;i++)
{ (*funcpointer[fid])();
myscores[i]=getscore(fid);
#ifdef DEBUG
printf("score # %d = %g\n", i, myscores[i]);
#endif
}
*numtries=2; /* Show 5 attempts */
/*
** The system allows a maximum of 30 tries before it gives
** up. Since we've done 5 already, we'll allow 25 more.
*/
/*
** Enter loop to test for confidence criteria.
*/
while(1)
{
/*
** Calculate confidence. Should always return 0.
*/
if (0!=calc_confidence(myscores,
*numtries,
&c_half_interval,
mean,
stdev)) return(-1);
/*
** Is the length of the half interval 5% or less of mean?
** If so, we can go home. Otherwise, we have to continue.
*/
if(c_half_interval/ (*mean) <= (double)0.05)
break;
#ifdef OLDCODE
#undef OLDCODE
#endif
#ifdef OLDCODE
/* this code is no longer valid, we now do not replace but add new scores */
/* Uwe F. Mayer */
/*
** Go get a new score and see if it
** improves existing scores.
*/
do {
if(*numtries==10)
return(-1);
(*funcpointer[fid])();
*numtries+=1;
newscore=getscore(fid);
} while(seek_confidence(myscores,&newscore,
&c_half_interval,mean,stdev)==0);
#endif
/* We now simply add a new test run and hope that the runs
finally stabilize, Uwe F. Mayer */
if(*numtries==30) return(-1);
(*funcpointer[fid])();
myscores[*numtries]=getscore(fid);
#ifdef DEBUG
printf("score # %ld = %g\n", *numtries, myscores[*numtries]);
#endif
*numtries+=1;
}
return(0);
}
#ifdef OLDCODE
/* this procecdure is no longer needed, Uwe F. Mayer */
/********************
** seek_confidence **
*********************
** Pass this routine an array of 5 scores PLUS a new score.
** This routine tries the new score in place of each of
** the other five scores to determine if the new score,
** when replacing one of the others, improves the confidence
** half-interval.
** Return 0 if failure. Original 5 scores unchanged.
** Return -1 if success. Also returns new half-interval,
** mean, and standard deviation of the sample.
*/
static int seek_confidence( double scores[5],
double *newscore,
double *c_half_interval,
double *smean,
double *sdev)
{
double sdev_to_beat; /* Original sdev to be beaten */
double temp; /* For doing a swap */
int is_beaten; /* Indicates original was beaten */
int i; /* Index */
/*
** First calculate original standard deviation
*/
calc_confidence(scores,c_half_interval,smean,sdev);
sdev_to_beat=*sdev;
is_beaten=-1;
/*
** Try to beat original score. We'll come out of this
** loop with a flag.
*/
for(i=0;i<2;i++)
{
temp=scores[i];
scores[i]=*newscore;
calc_confidence(scores,c_half_interval,smean,sdev);
scores[i]=temp;
if(sdev_to_beat>*sdev)
{ is_beaten=i;
sdev_to_beat=*sdev;
}
}
if(is_beaten!=-1)
{ scores[is_beaten]=*newscore;
return(-1);
}
return(0);
}
#endif
/********************
** calc_confidence **
*********************
** Given a set of numtries scores, calculate the confidence
** half-interval. We'll also return the sample mean and sample
** standard deviation.
** NOTE: This routines presumes a confidence of 95% and
** a confidence coefficient of .95
** returns 0 if there is an error, otherwise -1
*/
static int calc_confidence(double scores[], /* Array of scores */
int num_scores, /* number of scores in array */
double *c_half_interval, /* Confidence half-int */
double *smean, /* Standard mean */
double *sdev) /* Sample stand dev */
{
/* Here is a list of the student-t distribution up to 29 degrees of
freedom. The value at 0 is bogus, as there is no value for zero
degrees of freedom. */
double student_t[30]={0.0 , 12.706 , 4.303 , 3.182 , 2.776 , 2.571 ,
2.447 , 2.365 , 2.306 , 2.262 , 2.228 ,
2.201 , 2.179 , 2.160 , 2.145 , 2.131 ,
2.120 , 2.110 , 2.101 , 2.093 , 2.086 ,
2.080 , 2.074 , 2.069 , 2.064 , 2.060 ,
2.056 , 2.052 , 2.048 , 2.045 };
int i; /* Index */
if ((num_scores<2) || (num_scores>30)) {
output_string("Internal error: calc_confidence called with an illegal number of scores\n");
return(-1);
}
/*
** First calculate mean.
*/
*smean=(double)0.0;
for(i=0;i<num_scores;i++){
*smean+=scores[i];
}
*smean/=(double)num_scores;
/* Get standard deviation */
*sdev=(double)0.0;
for(i=0;i<num_scores;i++) {
*sdev+=(scores[i]-(*smean))*(scores[i]-(*smean));
}
*sdev/=(double)(num_scores-1);
*sdev=sqrt(*sdev);
/* Now calculate the length of the confidence half-interval. For a
** confidence level of 95% our confidence coefficient gives us a
** multiplying factor of the upper .025 quartile of a t distribution
** with num_scores-1 degrees of freedom, and dividing by sqrt(number of
** observations). See any introduction to statistics.
*/
*c_half_interval=student_t[num_scores-1] * (*sdev) / sqrt((double)num_scores);
return(0);
}
/*************
** getscore **
**************
** Return the score for a particular benchmark.
*/
static double getscore(int fid)
{
/*
** Fid tells us the function. This is really a matter of
** doing the proper coercion.
*/
switch(fid)
{
case TF_NUMSORT:
return(global_numsortstruct.sortspersec);
case TF_SSORT:
return(global_strsortstruct.sortspersec);
case TF_BITOP:
return(global_bitopstruct.bitopspersec);
case TF_FPEMU:
return(global_emfloatstruct.emflops);
case TF_FFPU:
return(global_fourierstruct.fflops);
case TF_ASSIGN:
return(global_assignstruct.iterspersec);
case TF_IDEA:
return(global_ideastruct.iterspersec);
case TF_HUFF:
return(global_huffstruct.iterspersec);
case TF_NNET:
return(global_nnetstruct.iterspersec);
case TF_LU:
return(global_lustruct.iterspersec);
}
return((double)0.0);
}
/******************
** output_string **
*******************
** Displays a string on the screen. Also, if the flag
** write_to_file is set, outputs the string to the output file.
** Note, this routine presumes that you've included a carriage
** return at the end of the buffer.
*/
static void output_string(char *buffer)
{
printf("%s",buffer);
if(write_to_file!=0)
fprintf(global_ofile,"%s",buffer);
return;
}
/***************
** show_stats **
****************
** This routine displays statistics for a particular benchmark.
** The benchmark is identified by its id.
*/
static void show_stats (int bid)
{
char buffer[80]; /* Display buffer */
switch(bid)
{
case TF_NUMSORT: /* Numeric sort */
sprintf(buffer," Number of arrays: %d\n",
global_numsortstruct.numarrays);
output_string(buffer);
sprintf(buffer," Array size: %ld\n",
global_numsortstruct.arraysize);
output_string(buffer);
break;
case TF_SSORT: /* String sort */
sprintf(buffer," Number of arrays: %d\n",
global_strsortstruct.numarrays);
output_string(buffer);
sprintf(buffer," Array size: %ld\n",
global_strsortstruct.arraysize);
output_string(buffer);
break;
case TF_BITOP: /* Bitmap operation */
sprintf(buffer," Operations array size: %ld\n",
global_bitopstruct.bitoparraysize);
output_string(buffer);
sprintf(buffer," Bitfield array size: %ld\n",
global_bitopstruct.bitfieldarraysize);
output_string(buffer);
break;
case TF_FPEMU: /* Floating-point emulation */
sprintf(buffer," Number of loops: %lu\n",
global_emfloatstruct.loops);
output_string(buffer);
sprintf(buffer," Array size: %lu\n",
global_emfloatstruct.arraysize);
output_string(buffer);
break;
case TF_FFPU: /* Fourier test */
sprintf(buffer," Number of coefficients: %lu\n",
global_fourierstruct.arraysize);
output_string(buffer);
break;
case TF_ASSIGN:
sprintf(buffer," Number of arrays: %lu\n",
global_assignstruct.numarrays);
output_string(buffer);
break;
case TF_IDEA:
sprintf(buffer," Array size: %lu\n",
global_ideastruct.arraysize);
output_string(buffer);
sprintf(buffer," Number of loops: %lu\n",
global_ideastruct.loops);
output_string(buffer);
break;
case TF_HUFF:
sprintf(buffer," Array size: %lu\n",
global_huffstruct.arraysize);
output_string(buffer);
sprintf(buffer," Number of loops: %lu\n",
global_huffstruct.loops);
output_string(buffer);
break;
case TF_NNET:
sprintf(buffer," Number of loops: %lu\n",
global_nnetstruct.loops);
output_string(buffer);
break;
case TF_LU:
sprintf(buffer," Number of arrays: %lu\n",
global_lustruct.numarrays);
output_string(buffer);
break;
}
return;
}
/*
** Following code added for Mac stuff, so that we can emulate command
** lines.
*/
#ifdef MAC
/*****************
** UCommandLine **
******************
** Reads in a command line, and sets up argc and argv appropriately.
** Note that this routine uses gets() to read in the line. This means
** you'd better not enter more than 128 characters on a command line, or
** things will overflow, and oh boy...
*/
void UCommandLine(void)
{
printf("Enter command line\n:");
gets((char *)Uargbuff);
UParse();
return;
}
/***********
** UParse **
************
** Parse the pseudo command-line. This code appeared as part of the
** Small-C library in Dr. Dobb's ToolBook of C.
** It expects the following globals:
** argc = arg count
** argv = Pointer to array of char pointers
** Uargbuff = Character array that holds the arguments. Should be 129 bytes long.
** Udummy1 = This is a 2-byte buffer that holds a "*", and acts as the first
** argument in the argument list. This maintains compatibility with other
** C's, though it does not provide access to the executable filename.
** This routine allows for up to 20 individual command-line arguments.
** Also note that this routine does NOT allow for redirection.
*/
void UParse(void)
{
unsigned char *ptr;
argc=0; /* Start arg count */
Udummy[0]='*'; /* Set dummy first argument */
Udummy[1]='\0';
argv[argc++]=(char *)Udummy;
ptr=Uargbuff; /* Start pointer */
while(*ptr)
{
if(isspace(*ptr))
{ ++ptr;
continue;
}
if(argc<20) argv[argc++]=(char *)ptr;
ptr=UField(ptr);
}
return;
}
/***********
** UField **
************
** Isolate the next command-line field.
*/
unsigned char *UField(unsigned char *ptr)
{
while(*ptr)
{ if(isspace(*ptr))
{ *ptr=(unsigned char)NULL;
return(++ptr);
}
++ptr;
}
return(ptr);
}
#endif
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