pwr_c.c

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				  char		Str_2_Comp [31];
				  } var_2;
		  struct {
				  char		Ch_1_Comp;
				  char		Ch_2_Comp;
				  } var_3;
		  } variant;
	  } Rec_Type, *Rec_Pointer;



/*
 ****************************************************************************
 *				   "DHRYSTONE" Benchmark Program
 *				   -----------------------------
 *  Version:	C, Version 2.1
 *  File:	   dhry_1.c (part 2 of 3)
 *  Date:	   May 25, 1988
 *  Author:	 Reinhold P. Weicker
 ****************************************************************************
 */

#include <string.h>


/* Global Variables: */

Rec_Pointer	 Ptr_Glob,
				Next_Ptr_Glob;
int			 Int_Glob;
Boolean		 Bool_Glob;
char			Ch_1_Glob,
				Ch_2_Glob;
int			 Arr_1_Glob [50];
int			 Arr_2_Glob [50] [50];

/* extern char	 *malloc (); */

Enumeration	 Func_1 ();
  /* forward declaration necessary since Enumeration may not simply be int */

#ifndef REG
		Boolean Reg = false;
#define REG
		/* REG becomes defined as empty */
		/* i.e. no register variables   */
#else
		Boolean Reg = true;
#endif


void dhrystone21(void)
/*****/

  /* main program, corresponds to procedures		*/
  /* Main and Proc_0 in the Ada version			 */
{
		One_Fifty	   Int_1_Loc;
  REG   One_Fifty	   Int_2_Loc;
		One_Fifty	   Int_3_Loc;
  REG   char			Ch_Index;
		Enumeration	 Enum_Loc;
		Str_30		  Str_1_Loc;
		Str_30		  Str_2_Loc;
  REG   int			 Run_Index;
  REG   int			 Number_Of_Runs;

  /* Initializations */

  Next_Ptr_Glob = (Rec_Pointer) malloc (sizeof (Rec_Type));
  Ptr_Glob = (Rec_Pointer) malloc (sizeof (Rec_Type));

  Ptr_Glob->Ptr_Comp					= Next_Ptr_Glob;
  Ptr_Glob->Discr					   = Ident_1;
  Ptr_Glob->variant.var_1.Enum_Comp	 = Ident_3;
  Ptr_Glob->variant.var_1.Int_Comp	  = 40;
  strcpy (Ptr_Glob->variant.var_1.Str_Comp, 
		  "DHRYSTONE PROGRAM, SOME STRING");
  strcpy (Str_1_Loc, "DHRYSTONE PROGRAM, 1'ST STRING");

  Arr_2_Glob [8][7] = 10;
		/* Was missing in published program. Without this statement,	*/
		/* Arr_2_Glob [8][7] would have an undefined value.			 */
		/* Warning: With 16-Bit processors and Number_Of_Runs > 32000,  */
		/* overflow may occur for this array element.				   */

  Number_Of_Runs = 100000;

  for (Run_Index = 1; Run_Index <= Number_Of_Runs; ++Run_Index)
  {

	Proc_5();
	Proc_4();
	  /* Ch_1_Glob == 'A', Ch_2_Glob == 'B', Bool_Glob == true */
	Int_1_Loc = 2;
	Int_2_Loc = 3;
	strcpy (Str_2_Loc, "DHRYSTONE PROGRAM, 2'ND STRING");
	Enum_Loc = Ident_2;
	Bool_Glob = ! Func_2 (Str_1_Loc, Str_2_Loc);
	  /* Bool_Glob == 1 */
	while (Int_1_Loc < Int_2_Loc)  /* loop body executed once */
	{
	  Int_3_Loc = 5 * Int_1_Loc - Int_2_Loc;
		/* Int_3_Loc == 7 */
	  Proc_7 (Int_1_Loc, Int_2_Loc, &Int_3_Loc);
		/* Int_3_Loc == 7 */
	  Int_1_Loc += 1;
	} /* while */
	  /* Int_1_Loc == 3, Int_2_Loc == 3, Int_3_Loc == 7 */
	Proc_8 (Arr_1_Glob, Arr_2_Glob, Int_1_Loc, Int_3_Loc);
	  /* Int_Glob == 5 */
	Proc_1 (Ptr_Glob);
	for (Ch_Index = 'A'; Ch_Index <= Ch_2_Glob; ++Ch_Index)
							 /* loop body executed twice */
	{
	  if (Enum_Loc == Func_1 (Ch_Index, 'C'))
		  /* then, not executed */
		{
		Proc_6 (Ident_1, &Enum_Loc);
		strcpy (Str_2_Loc, "DHRYSTONE PROGRAM, 3'RD STRING");
		Int_2_Loc = Run_Index;
		Int_Glob = Run_Index;
		}
	}
	  /* Int_1_Loc == 3, Int_2_Loc == 3, Int_3_Loc == 7 */
	Int_2_Loc = Int_2_Loc * Int_1_Loc;
	Int_1_Loc = Int_2_Loc / Int_3_Loc;
	Int_2_Loc = 7 * (Int_2_Loc - Int_3_Loc) - Int_1_Loc;
	  /* Int_1_Loc == 1, Int_2_Loc == 13, Int_3_Loc == 7 */
	Proc_2 (&Int_1_Loc);
	  /* Int_1_Loc == 5 */
  } /* loop "for Run_Index" */
}


Proc_1 (Ptr_Val_Par)
/******************/

REG Rec_Pointer Ptr_Val_Par;
	/* executed once */
{
  REG Rec_Pointer Next_Record = Ptr_Val_Par->Ptr_Comp;  
										/* == Ptr_Glob_Next */
  /* Local variable, initialized with Ptr_Val_Par->Ptr_Comp,	*/
  /* corresponds to "rename" in Ada, "with" in Pascal		   */
  
  structassign (*Ptr_Val_Par->Ptr_Comp, *Ptr_Glob); 
  Ptr_Val_Par->variant.var_1.Int_Comp = 5;
  Next_Record->variant.var_1.Int_Comp 
		= Ptr_Val_Par->variant.var_1.Int_Comp;
  Next_Record->Ptr_Comp = Ptr_Val_Par->Ptr_Comp;
  Proc_3 (&Next_Record->Ptr_Comp);
	/* Ptr_Val_Par->Ptr_Comp->Ptr_Comp 
						== Ptr_Glob->Ptr_Comp */
  if (Next_Record->Discr == Ident_1)
	/* then, executed */
  {
	Next_Record->variant.var_1.Int_Comp = 6;
	Proc_6 (Ptr_Val_Par->variant.var_1.Enum_Comp, 
		   &Next_Record->variant.var_1.Enum_Comp);
	Next_Record->Ptr_Comp = Ptr_Glob->Ptr_Comp;
	Proc_7 (Next_Record->variant.var_1.Int_Comp, 10, 
		   &Next_Record->variant.var_1.Int_Comp);
  }
  else /* not executed */
	structassign (*Ptr_Val_Par, *Ptr_Val_Par->Ptr_Comp);
} /* Proc_1 */


Proc_2 (Int_Par_Ref)
/******************/
	/* executed once */
	/* *Int_Par_Ref == 1, becomes 4 */

One_Fifty   *Int_Par_Ref;
{
  One_Fifty  Int_Loc;  
  Enumeration   Enum_Loc;

  Int_Loc = *Int_Par_Ref + 10;
  do /* executed once */
	if (Ch_1_Glob == 'A')
	  /* then, executed */
	{
	  Int_Loc -= 1;
	  *Int_Par_Ref = Int_Loc - Int_Glob;
	  Enum_Loc = Ident_1;
	} /* if */
  while (Enum_Loc != Ident_1); /* true */
} /* Proc_2 */


Proc_3 (Ptr_Ref_Par)
/******************/
	/* executed once */
	/* Ptr_Ref_Par becomes Ptr_Glob */

Rec_Pointer *Ptr_Ref_Par;

{
  if (Ptr_Glob != Null)
	/* then, executed */
	*Ptr_Ref_Par = Ptr_Glob->Ptr_Comp;
  Proc_7 (10, Int_Glob, &Ptr_Glob->variant.var_1.Int_Comp);
} /* Proc_3 */


Proc_4 () /* without parameters */
/*******/
	/* executed once */
{
  Boolean Bool_Loc;

  Bool_Loc = Ch_1_Glob == 'A';
  Bool_Glob = Bool_Loc | Bool_Glob;
  Ch_2_Glob = 'B';
} /* Proc_4 */


Proc_5 () /* without parameters */
/*******/
	/* executed once */
{
  Ch_1_Glob = 'A';
  Bool_Glob = false;
} /* Proc_5 */


		/* Procedure for the assignment of structures,		  */
		/* if the C compiler doesn't support this feature	   */
#ifdef  NOSTRUCTASSIGN
memcpy (d, s, l)
register char   *d;
register char   *s;
register int	l;
{
		while (l--) *d++ = *s++;
}
#endif


/*
 ****************************************************************************
 *				   "DHRYSTONE" Benchmark Program
 *				   -----------------------------
 *  Version:	C, Version 2.1
 *  File:	   dhry_2.c (part 3 of 3)
 *  Date:	   May 25, 1988
 *  Author:	 Reinhold P. Weicker
 ****************************************************************************
 */

#ifndef REG
#define REG
		/* REG becomes defined as empty */
		/* i.e. no register variables   */
#endif

extern  int	 Int_Glob;
extern  char	Ch_1_Glob;


Proc_6 (Enum_Val_Par, Enum_Ref_Par)
/*********************************/
	/* executed once */
	/* Enum_Val_Par == Ident_3, Enum_Ref_Par becomes Ident_2 */

Enumeration  Enum_Val_Par;
Enumeration *Enum_Ref_Par;
{
  *Enum_Ref_Par = Enum_Val_Par;
  if (! Func_3 (Enum_Val_Par))
	/* then, not executed */
	*Enum_Ref_Par = Ident_4;
  switch (Enum_Val_Par)
  {
	case Ident_1: 
	  *Enum_Ref_Par = Ident_1;
	  break;
	case Ident_2: 
	  if (Int_Glob > 100)
		/* then */
	  *Enum_Ref_Par = Ident_1;
	  else *Enum_Ref_Par = Ident_4;
	  break;
	case Ident_3: /* executed */
	  *Enum_Ref_Par = Ident_2;
	  break;
	case Ident_4: break;
	case Ident_5: 
	  *Enum_Ref_Par = Ident_3;
	  break;
  } /* switch */
} /* Proc_6 */


Proc_7 (Int_1_Par_Val, Int_2_Par_Val, Int_Par_Ref)
/**********************************************/
	/* executed three times									  */ 
	/* first call:	  Int_1_Par_Val == 2, Int_2_Par_Val == 3,  */
	/*				  Int_Par_Ref becomes 7					*/
	/* second call:	 Int_1_Par_Val == 10, Int_2_Par_Val == 5, */
	/*				  Int_Par_Ref becomes 17				   */
	/* third call:	  Int_1_Par_Val == 6, Int_2_Par_Val == 10, */
	/*				  Int_Par_Ref becomes 18				   */
One_Fifty	   Int_1_Par_Val;
One_Fifty	   Int_2_Par_Val;
One_Fifty	  *Int_Par_Ref;
{
  One_Fifty Int_Loc;

  Int_Loc = Int_1_Par_Val + 2;
  *Int_Par_Ref = Int_2_Par_Val + Int_Loc;
} /* Proc_7 */


Proc_8 (Arr_1_Par_Ref, Arr_2_Par_Ref, Int_1_Par_Val, Int_2_Par_Val)
/*********************************************************************/
	/* executed once	  */
	/* Int_Par_Val_1 == 3 */
	/* Int_Par_Val_2 == 7 */
Arr_1_Dim	   Arr_1_Par_Ref;
Arr_2_Dim	   Arr_2_Par_Ref;
int			 Int_1_Par_Val;
int			 Int_2_Par_Val;
{
  REG One_Fifty Int_Index;
  REG One_Fifty Int_Loc;

  Int_Loc = Int_1_Par_Val + 5;
  Arr_1_Par_Ref [Int_Loc] = Int_2_Par_Val;
  Arr_1_Par_Ref [Int_Loc+1] = Arr_1_Par_Ref [Int_Loc];
  Arr_1_Par_Ref [Int_Loc+30] = Int_Loc;
  for (Int_Index = Int_Loc; Int_Index <= Int_Loc+1; ++Int_Index)
	Arr_2_Par_Ref [Int_Loc] [Int_Index] = Int_Loc;
  Arr_2_Par_Ref [Int_Loc] [Int_Loc-1] += 1;
  Arr_2_Par_Ref [Int_Loc+20] [Int_Loc] = Arr_1_Par_Ref [Int_Loc];
  Int_Glob = 5;
} /* Proc_8 */


Enumeration Func_1 (Ch_1_Par_Val, Ch_2_Par_Val)
/*************************************************/
	/* executed three times										 */
	/* first call:	  Ch_1_Par_Val == 'H', Ch_2_Par_Val == 'R'	*/
	/* second call:	 Ch_1_Par_Val == 'A', Ch_2_Par_Val == 'C'	*/
	/* third call:	  Ch_1_Par_Val == 'B', Ch_2_Par_Val == 'C'	*/

Capital_Letter   Ch_1_Par_Val;
Capital_Letter   Ch_2_Par_Val;
{
  Capital_Letter		Ch_1_Loc;
  Capital_Letter		Ch_2_Loc;

  Ch_1_Loc = Ch_1_Par_Val;
  Ch_2_Loc = Ch_1_Loc;
  if (Ch_2_Loc != Ch_2_Par_Val)
	/* then, executed */
	return (Ident_1);
  else  /* not executed */
  {
	Ch_1_Glob = Ch_1_Loc;
	return (Ident_2);
   }
} /* Func_1 */


Boolean Func_2 (Str_1_Par_Ref, Str_2_Par_Ref)
/*************************************************/
	/* executed once */
	/* Str_1_Par_Ref == "DHRYSTONE PROGRAM, 1'ST STRING" */
	/* Str_2_Par_Ref == "DHRYSTONE PROGRAM, 2'ND STRING" */

Str_30  Str_1_Par_Ref;
Str_30  Str_2_Par_Ref;
{
  REG One_Thirty		Int_Loc;
	  Capital_Letter	Ch_Loc;

  Int_Loc = 2;
  while (Int_Loc <= 2) /* loop body executed once */
	if (Func_1 (Str_1_Par_Ref[Int_Loc],
				Str_2_Par_Ref[Int_Loc+1]) == Ident_1)
	  /* then, executed */
	{
	  Ch_Loc = 'A';
	  Int_Loc += 1;
	} /* if, while */
  if (Ch_Loc >= 'W' && Ch_Loc < 'Z')
	/* then, not executed */
	Int_Loc = 7;
  if (Ch_Loc == 'R')
	/* then, not executed */
	return (true);
  else /* executed */
  {
	if (strcmp (Str_1_Par_Ref, Str_2_Par_Ref) > 0)
	  /* then, not executed */
	{
	  Int_Loc += 7;
	  Int_Glob = Int_Loc;
	  return (true);
	}
	else /* executed */
	  return (false);
  } /* if Ch_Loc */
} /* Func_2 */


Boolean Func_3 (Enum_Par_Val)
/***************************/
	/* executed once		*/
	/* Enum_Par_Val == Ident_3 */
Enumeration Enum_Par_Val;
{
  Enumeration Enum_Loc;

  Enum_Loc = Enum_Par_Val;
  if (Enum_Loc == Ident_3)
	/* then, executed */
	return (true);
  else /* not executed */
	return (false);
} /* Func_3 */