
/*	EVERBODY:	Please read "APOLOGY" below. -rick 01/06/85
 *			See introduction in net.arch, or net.micro
 *
 *	"DHRYSTONE" Benchmark Program
 *
 *	Version:	C/1.1, 12/01/84
 *
 *	Date:		PROGRAM updated 01/06/86, RESULTS updated 03/31/86
 *
 *	Author:		Reinhold P. Weicker,  CACM Vol 27, No 10, 10/84 pg. 1013
 *			Translated from ADA by Rick Richardson
 *			Every method to preserve ADA-likeness has been used,
 *			at the expense of C-ness.
 *
 *	Compile:	cc -O dry.c -o drynr			: No registers
 *			cc -O -DREG=register dry.c -o dryr	: Registers
 *
 *	Defines:	Defines are provided for old C compiler's
 *			which don't have enums, and can't assign structures.
 *			The time(2) function is library dependant; Most
 *			return the time in seconds, but beware of some, like
 *			Aztec C, which return other units.
 *			The LOOPS define is initially set for 50000 loops.
 *			If you have a machine with large integers and is
 *			very fast, please change this number to 500000 to
 *			get better accuracy.  Please select the way to
 *			measure the execution time using the TIME define.
 *			For single user machines, time(2) is adequate. For
 *			multi-user machines where you cannot get single-user
 *			access, use the times(2) function.  If you have
 *			neither, use a stopwatch in the dead of night.
 *			Use a "printf" at the point marked "start timer"
 *			to begin your timings. DO NOT use the UNIX "time(1)"
 *			command, as this will measure the total time to
 *			run this program, which will (erroneously) include
 *			the time to malloc(3) storage and to compute the
 *			time it takes to do nothing.
 *

 *	The following program contains statements of a high-level programming
 *	language (C) in a distribution considered representative:
 *
 *	assignments			53%
 *	control statements		32%
 *	procedure, function calls	15%
 *
 *	100 statements are dynamically executed.  The program is balanced with
 *	respect to the three aspects:
 *		- statement type
 *		- operand type (for simple data types)
 *		- operand access
 *			operand global, local, parameter, or constant.
 *
 *	The combination of these three aspects is balanced only approximately.
 *
 *	The program does not compute anything meaningfull, but it is
 *	syntactically and semantically correct.
 *
 */

/* Accuracy of timings and human fatigue controlled by next two lines */
#define LOOPS	50000		/* Use this for slow or 16 bit machines */
/* #define LOOPS	500000		/* Use this for faster machines */

/* Compiler dependent options */
#define	NOENUM			/* Define if compiler has no enum's */
/* #define	NOSTRUCTASSIGN		/* Define if compiler can't assign structures */

/* define only one of the next two defines */
/* #define TIMES			/* Use times(2) time function */ 
/* #define TIME			/* Use time(2) time function */

/* define the granularity of your times(2) function (when used) */
#define HZ	60		/* times(2) returns 1/60 second (most) */
/*#define HZ	100		/* times(2) returns 1/100 second (WECo) */

/* for compatibility with goofed up version */
/*#define GOOF			/* Define if you want the goofed up version */

#ifdef GOOF
char	Version[] = "1.0";
#else
char	Version[] = "1.1";
#endif

#ifdef	NOSTRUCTASSIGN
#define	structassign(d, s)	bcopy(&(s), &(d), sizeof(d))
#else
#define	structassign(d, s)	d = s
#endif

#ifdef	NOENUM
#define	Ident1	1
#define	Ident2	2
#define	Ident3	3
#define	Ident4	4
#define	Ident5	5
typedef int	Enumeration;
#else
typedef enum	{Ident1, Ident2, Ident3, Ident4, Ident5} Enumeration;
#endif

typedef int	OneToThirty;
typedef int	OneToFifty;
typedef char	CapitalLetter;
typedef char	String30[31];
typedef int	Array1Dim[51];
typedef int	Array2Dim[51][51];

struct	Record
{
	struct Record		*PtrComp;
	Enumeration		Discr;
	Enumeration		EnumComp;
	OneToFifty		IntComp;
	String30		StringComp;
};

typedef struct Record 	RecordType;
typedef RecordType *	RecordPtr;
typedef int		boolean;

#define	NULL		0
#define	TRUE		1
#define	FALSE		0

#ifndef REG
#define	REG register 
#endif

extern Enumeration	Func1();
extern boolean		Func2();

#ifdef TIMES
#include <sys/types.h>
#include <sys/times.h>
#endif

main()
{
	Proc0();
	exit(0);
}

/*
 * Package 1
 */
int		IntGlob;
boolean		BoolGlob;
char		Char1Glob;
char		Char2Glob;
Array1Dim	Array1Glob;
Array2Dim	Array2Glob;
RecordPtr	PtrGlb;
RecordPtr	PGlbNext;

Proc0()
{
	OneToFifty		IntLoc1;
	REG OneToFifty		IntLoc2;
	OneToFifty		IntLoc3;
	REG char		CharLoc;
	REG char		CharIndex;
	Enumeration	 	EnumLoc;
	String30		String1Loc;
	String30		String2Loc;
	extern char		*malloc();
	unsigned int	i;

#ifdef TIME
	long			time();
	long			starttime;
	long			benchtime;
	long			nulltime;

	starttime = time( (long *) 0);
	for (i = 0; i < LOOPS; ++i);
	nulltime = time( (long *) 0) - starttime; /* Computes o'head of loop */
#endif
#ifdef TIMES
	time_t			starttime;
	time_t			benchtime;
	time_t			nulltime;
	struct tms		tms;
	unsigned int	i;

	times(&tms); starttime = tms.tms_utime;
	for (i = 0; i < LOOPS; ++i);
	times(&tms);
	nulltime = tms.tms_utime - starttime; /* Computes overhead of looping */
#endif

	PGlbNext = (RecordPtr) malloc(sizeof(RecordType));
	PtrGlb = (RecordPtr) malloc(sizeof(RecordType));
	PtrGlb->PtrComp = PGlbNext;
	PtrGlb->Discr = Ident1;
	PtrGlb->EnumComp = Ident3;
	PtrGlb->IntComp = 40;
	strcpy(PtrGlb->StringComp, "DHRYSTONE PROGRAM, SOME STRING");
#ifndef	GOOF
	strcpy(String1Loc, "DHRYSTONE PROGRAM, 1'ST STRING");	/*GOOF*/
#endif
	Array2Glob[8][7] = 10;	/* Was missing in published program */

/*****************
-- Start Timer --
*****************/
#ifdef TIME
	starttime = time( (long *) 0);
#endif
#ifdef TIMES
	times(&tms); starttime = tms.tms_utime;
#endif
	for (i = 0; i < LOOPS; ++i)
	{

		Proc5();
		Proc4();
		IntLoc1 = 2;
		IntLoc2 = 3;
		strcpy(String2Loc, "DHRYSTONE PROGRAM, 2'ND STRING");
		EnumLoc = Ident2;
		BoolGlob = ! Func2(String1Loc, String2Loc);
		while (IntLoc1 < IntLoc2)
		{
			IntLoc3 = 5 * IntLoc1 - IntLoc2;
			Proc7(IntLoc1, IntLoc2, &IntLoc3);
			++IntLoc1;
		}
		Proc8(Array1Glob, Array2Glob, IntLoc1, IntLoc3);
		Proc1(PtrGlb);
		for (CharIndex = 'A'; CharIndex <= Char2Glob; ++CharIndex)
			if (EnumLoc == Func1(CharIndex, 'C'))
				Proc6(Ident1, &EnumLoc);
		IntLoc3 = IntLoc2 * IntLoc1;
		IntLoc2 = IntLoc3 / IntLoc1;
		IntLoc2 = 7 * (IntLoc3 - IntLoc2) - IntLoc1;
		Proc2(&IntLoc1);
	}

/*****************
-- Stop Timer --
*****************/

#ifdef TIME
	benchtime = time( (long *) 0) - starttime - nulltime;
	printf("Dhrystone(%s) time for %ld passes = %ld\n",
		Version,
		(long) LOOPS, benchtime);
	printf("This machine benchmarks at %ld dhrystones/second\n",
		((long) LOOPS) / benchtime);
#endif
#ifdef TIMES
	times(&tms);
	benchtime = tms.tms_utime - starttime - nulltime;
	printf("Dhrystone(%s) time for %ld passes = %ld\n",
		Version,
		(long) LOOPS, benchtime/HZ);
	printf("This machine benchmarks at %ld dhrystones/second\n",
		((long) LOOPS) * HZ / benchtime);
#endif

}

Proc1(PtrParIn)
REG RecordPtr	PtrParIn;
{
#define	NextRecord	(*(PtrParIn->PtrComp))

	structassign(NextRecord, *PtrGlb);
	PtrParIn->IntComp = 5;
	NextRecord.IntComp = PtrParIn->IntComp;
	NextRecord.PtrComp = PtrParIn->PtrComp;
	Proc3(NextRecord.PtrComp);

	if (NextRecord.Discr == Ident1)
	{
		NextRecord.IntComp = 6;
		Proc6(PtrParIn->EnumComp, &NextRecord.EnumComp);
		NextRecord.PtrComp = PtrGlb->PtrComp;
		Proc7(NextRecord.IntComp, 10, &NextRecord.IntComp);
	}
	else
		structassign(*PtrParIn, NextRecord);

#undef	NextRecord
}

Proc2(IntParIO)
OneToFifty	*IntParIO;
{
	REG OneToFifty		IntLoc;
	REG Enumeration		EnumLoc;

	IntLoc = *IntParIO + 10;
	for(;;)
	{
		if (Char1Glob == 'A')
		{
			--IntLoc;
			*IntParIO = IntLoc - IntGlob;
			EnumLoc = Ident1;
		}
		if (EnumLoc == Ident1)
			break;
	}
}

Proc3(PtrParOut)
RecordPtr	*PtrParOut;
{
	if (PtrGlb != NULL)
		*PtrParOut = PtrGlb->PtrComp;
	else
		IntGlob = 100;
	Proc7(10, IntGlob, &PtrGlb->IntComp);
}

Proc4()
{
	REG boolean	BoolLoc;

	BoolLoc = Char1Glob == 'A';
	BoolLoc |= BoolGlob;
	Char2Glob = 'B';
}

Proc5()
{
	Char1Glob = 'A';
	BoolGlob = FALSE;
}

extern boolean Func3();

Proc6(EnumParIn, EnumParOut)
REG Enumeration	EnumParIn;
REG Enumeration	*EnumParOut;
{
	*EnumParOut = EnumParIn;
	if (! Func3(EnumParIn) )
		*EnumParOut = Ident4;
	switch (EnumParIn)
	{
	case Ident1:	*EnumParOut = Ident1; break;
	case Ident2:	if (IntGlob > 100) *EnumParOut = Ident1;
			else *EnumParOut = Ident4;
			break;
	case Ident3:	*EnumParOut = Ident2; break;
	case Ident4:	break;
	case Ident5:	*EnumParOut = Ident3;
	}
}

Proc7(IntParI1, IntParI2, IntParOut)
OneToFifty	IntParI1;
OneToFifty	IntParI2;
OneToFifty	*IntParOut;
{
	REG OneToFifty	IntLoc;

	IntLoc = IntParI1 + 2;
	*IntParOut = IntParI2 + IntLoc;
}

Proc8(Array1Par, Array2Par, IntParI1, IntParI2)
Array1Dim	Array1Par;
Array2Dim	Array2Par;
OneToFifty	IntParI1;
OneToFifty	IntParI2;
{
	REG OneToFifty	IntLoc;
	REG OneToFifty	IntIndex;

	IntLoc = IntParI1 + 5;
	Array1Par[IntLoc] = IntParI2;
	Array1Par[IntLoc+1] = Array1Par[IntLoc];
	Array1Par[IntLoc+30] = IntLoc;
	for (IntIndex = IntLoc; IntIndex <= (IntLoc+1); ++IntIndex)
		Array2Par[IntLoc][IntIndex] = IntLoc;
	++Array2Par[IntLoc][IntLoc-1];
	Array2Par[IntLoc+20][IntLoc] = Array1Par[IntLoc];
	IntGlob = 5;
}

Enumeration Func1(CharPar1, CharPar2)
CapitalLetter	CharPar1;
CapitalLetter	CharPar2;
{
	REG CapitalLetter	CharLoc1;
	REG CapitalLetter	CharLoc2;

	CharLoc1 = CharPar1;
	CharLoc2 = CharLoc1;
	if (CharLoc2 != CharPar2)
		return (Ident1);
	else
		return (Ident2);
}

boolean Func2(StrParI1, StrParI2)
String30	StrParI1;
String30	StrParI2;
{
	REG OneToThirty		IntLoc;
	REG CapitalLetter	CharLoc;

	IntLoc = 1;
	while (IntLoc <= 1)
		if (Func1(StrParI1[IntLoc], StrParI2[IntLoc+1]) == Ident1)
		{
			CharLoc = 'A';
			++IntLoc;
		}
	if (CharLoc >= 'W' && CharLoc <= 'Z')
		IntLoc = 7;
	if (CharLoc == 'X')
		return(TRUE);
	else
	{
		if (strcmp(StrParI1, StrParI2) > 0)
		{
			IntLoc += 7;
			return (TRUE);
		}
		else
			return (FALSE);
	}
}

boolean Func3(EnumParIn)
REG Enumeration	EnumParIn;
{
	REG Enumeration	EnumLoc;

	EnumLoc = EnumParIn;
	if (EnumLoc == Ident3) return (TRUE);
	return (FALSE);
}


