Garst,
Thanks, but I beg to differ.
When I print sizeof(long) on Linux/386 it shows up as 32 bits. See below.
Linux test code:
main(){
unsigned long *p1=(void*)0x1000LU, *p2=(void*)0x7000LU,
*p3=(void*)0xf000LU;
unsigned long p2p1 = p2-p1;
unsigned long p3p1 = p3-p1;
printf ("%8.8lx %8.8lx %p %p %p %i \n", p2p1, p3p1, p1, p2, p3,
sizeof(p3));
printf ("sizeof(long) = %i\n", sizeof(long));
}
Here is the output:
00001800 00003800 0x1000 0x7000 0xf000 4
sizeof(long) = 4
Walt
Garst R. Reese wrote:
Size of long on the intel 386 is 64bits.
On the msp430, it is 32bits. Try long long
Garst
walt spicker wrote:
Hello,
I'm having trouble with the following pointer math. I get a different
result from the MSP430 GCC when I execute the same code compiled with
GCC for intel 386. Here is an example:
unsigned long *p1=(void*)0x1000, *p2=(void*)0x7000, *p3=(void*)0xf000;
unsigned long p2p1 = p2-p1;
unsigned long p3p1 = p3-p1;
static char buf[30];
snprintf (buf, sizeof(buf), "%8.8lx %8.8lx", p2p1, p3p1);
PrintLine (buf);
The "PrintLine" function squirts the string out my serial port that I
feed to my terminal emulator for display. The resulting string is given
below.
00001800 fffff800
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