From: "Martin Ambuhl" <mambuhl AT tiac DOT net>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: Speed Test - TC vs. DJGPP
Date: Sat, 7 Mar 1998 03:28:01 -0500
Organization: Honors Bridge Club
Lines: 52
Message-ID: <6dr0br$86r@news-central.tiac.net>
References: <01bd492f$47fb8b40$929175c2 AT ctx>
NNTP-Posting-Host: p0.ts3.newyo.ny.tiac.com
To: djgpp AT delorie DOT com
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Adrian Francis wrote in message <01bd492f$47fb8b40$929175c2 AT ctx>...
|Hi,
|
|I tried the following program in TC 3.0 and DJGPP...


Perhaps if you used a long int format (%ld) to print long ints you
would have better results.  While you're at it, change main to
(properly) return an int.  And add some nice '\n's.

|
|#include <time.h>
|
|void sub(void)
|{
|}
|
|void main(void)
|{
|clock_t start,end;
|long n,time;
|
|clrscr();
|start=clock();
|for (n=0;n<1000000;n++)
|{
|sub();
|}
|end=clock();
|time=(end-start);
|printf("tics:%d",time);
|time/=CLOCKS_PER_SEC;
|printf("sec:%d",time);
|}
|
|...and got these results...
|
|DJGPP - tics:13345 sec:146
|TC - tics:5 sec:0
|
|Can someone explain why this is happening?  I would expect DJGPP to be
|twice as fast considering it is a 32bit compiler.  Something must be wrong!


What a strange expectation!
What is the supposed relationship between the size of an address and
the speed of execution?

-