From: "Edd Dawson" <hotcakes AT planetquake DOT com>
Newsgroups: comp.os.msdos.djgpp
Subject: simple inequality evaluation fails?!?!
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Date: Fri, 13 Dec 2002 00:49:57 -0000
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To: djgpp AT delorie DOT com
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Reply-To: djgpp AT delorie DOT com

Hi,

I came across an unexpected result when executing a program I'm writing.
After tracking it down in the source, I wrote a few lines of test code and
found that a simple evaluation of an inequality was failing.
Here is the small chunk of test code from the program I am writing:

//test code starts here

printf("\nRPP = %d\n", raysperpixel);
if(raysperpixel < 1)
     printf("%d is less than 1\n", raysperpixel);
else
     printf("%d is greater than or equal to 1\n", raysperpixel);

//test code ends here

raysperpixel is an int (i.e its defined properly).
Here is the corresponding output:

RPP = -35
-35 is greater than or equal to 1

This makes about as much sense as the program's output! Can anyone help me
out? I'm pretty sure it's a bug, but I wanted to check here before making a
bug report.
I'd be happy to submit the source of my program if anyone wants to help me
further!  = )
If it matters at all, the value of 'raysperpixel' was obtained from a string
using the strtol function from the standard library i.e I used the line:
raysperpixel = (int)strtol(keyvalues[8], NULL, 10);

Any help with this would be great, even if it's only to confirm that it's a
bug!

Edd