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From: matt AT mattshouseofpain DOT com (Matt)
Newsgroups: comp.os.msdos.djgpp
Subject: DJGPP: #define problems
Date: 27 Dec 2001 14:23:17 -0800
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To: djgpp AT delorie DOT com
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Reply-To: djgpp AT delorie DOT com

Hi All,

I have am having a problem with the way #define's are being handled. I
have some sample code to demonstrate the problem.

I have commented the source to explain the problem. 

Basically when i do some math with the #define's the compiler looks
like it is selecting the wrong data type.

I have upgraded from 2.954 binaries to v3.03 binaries but this didn't
fix the problem.

If anyone has a suggestion i would appreciate it.

Regards,
Matt
(matt AT mattshouseofpain DOT com)

/**START**/
#include <stdio.h>
#define BASEVAL1    233
#define BASEVAL2    BASEVAL1 + 29
#define BASEVAL3    233
#define BASEVAL4    BASEVAL1 + 57

int main(void)
{
   printf("baseval1 [233] = %d\n", BASEVAL1);
   printf("baseval2 [262] = %d\n\n", BASEVAL2);
   printf("baseval3 [233] = %d\n", BASEVAL3);
   printf("baseval4 [290] = %d\n\n", BASEVAL4);

   /* up to this point the define's are ok but when the math is done
on
      the next line it seems to be treating the result as an unsigned
char
      data type. */
   printf("baseval4 - baseval2 [28] = %d\n\n", BASEVAL4 - BASEVAL2);

   /* here is a sanity check */
   printf("290 - 262 [28] = %d\n", 290 - 262);

   return(0);
}
/**END**/