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/*******************************************************************************
* The BYTE UNIX Benchmarks - Release 3
* Module: arith.c SID: 3.3 5/15/91 19:30:19
*
*******************************************************************************
* Bug reports, patches, comments, suggestions should be sent to:
*
* Ben Smith, Rick Grehan or Tom Yager
* ben@bytepb.byte.com rick_g@bytepb.byte.com tyager@bytepb.byte.com
*
*******************************************************************************
* Modification Log:
* May 12, 1989 - modified empty loops to avoid nullifying by optimizing
* compilers
* August 28, 1990 - changed timing relationship--now returns total number
* of iterations (ty)
* November 9, 1990 - made changes suggested by Keith Cantrell
* (digi!kcantrel) to defeat optimization
* to non-existence
*
******************************************************************************/
char SCCSid[] = "@(#) @(#)arith.c:3.3 -- 5/15/91 19:30:19";
/*
* arithmetic test
*
*/
#include <stdio.h>
#include "timeit.c"
unsigned long iter;
/* this function is called when the alarm expires */
report()
{
fprintf(stderr,"%ld loops\n", iter);
exit(0);
}
main(argc, argv)
int argc;
char *argv[];
{
int duration;
int result = 0;
if (argc != 2) {
printf("Usage: %s duration\n", argv[0]);
exit(1);
}
duration = atoi(argv[1]);
/* set up alarm call */
iter = 0; /* init iteration count */
wake_me(duration, report);
/* this loop will be interrupted by the alarm call */
while (1)
{
/* in switching to time-based (instead of iteration-based),
the following statement was added. It should not skew
the timings too much--there was an increment and test
in the "while" expression above. The only difference is
that now we're incrementing a long instead of an int. (ty) */
++iter;
/* the loop calls a function to insure that something is done
the results of the function are fed back in (just so they
they won't be thrown away. A loop with
unused assignments may get optimized out of existence */
result = dumb_stuff(result);
}
}
/************************** dumb_stuff *******************/
dumb_stuff(i)
int i;
{
#ifndef arithoh
datum x, y, z;
z = 0;
#endif
/*
* 101
* sum i*i/(i*i-1)
* i=2
*/
/* notice that the i value is always reset by the loop */
for (i=2; i<=101; i++)
{
#ifndef arithoh
x = i;
y = x*x;
z += y/(y-1);
}
return(x+y+z);
#else
}
return(0);
#endif
}
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.