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[avr-gcc-list] integer overflow

From: Ömer Sinan KAYA
Subject: [avr-gcc-list] integer overflow
Date: Tue, 27 May 2003 22:52:49 +0300

hi ,
i have an overflow warning from the compiler
here is the code that makes the problem
unsigned long val;

val = 1000*60*60*24;

i think the problem stems from the sizeof long , as far as i know long
is 4 bytes for atmel processors and integer is 2 bytes.the maximum
value for 4 bytes is

FFFFFFFF which is 4,294,967,295 that is bigger than 86,400,000.

if long is 2 bytes than is there a built in structure for carrying 4
bytes ?


Ömer Sinan KAYA
+90 262 648 13 97 / +90 262 648 16 91

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