Richard B. Johnson" <root@chaos.analogic.com>:
....
>int main()
>{
> int xxx = 1;
>
> printf("%08x (%d)\n", xxx, xxx);
> xxx <<= 31;
> printf("%08x (%d)\n", xxx, xxx);
> xxx >>= 31;
> printf("%08x (%d)\n", xxx, xxx);
> return 0;
>}
># gcc -O2 -o xxx xxx.c
#> ./xxx
>00000001 (1)
>80000000 (-2147483648)
>ffffffff (-1)
># exit
Is true for signed integers. Unsigned integers do get a logical shift:
00000001 (1)
80000000 (-2147483648)
00000001 (1)
-------------------------------------------------------------------------
Jesse I Pollard, II
Email: pollard@navo.hpc.mil
Any opinions expressed are solely my own.
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