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extern void abort ();
extern int abs (int __x) __attribute__ ((__nothrow__, __leaf__)) __attribute__ ((__const__));
static int
foo (unsigned char *w, int i, unsigned char *x, int j)
{
int tot = 0;
for (int a = 0; a < 16; a++)
{
for (int b = 0; b < 16; b++)
tot += abs (w[b] - x[b]);
w += i;
x += j;
}
return tot;
}
void
bar (unsigned char *w, unsigned char *x, int i, int *result)
{
*result = foo (w, 16, x, i);
}
int
main (void)
{
unsigned char m[256];
unsigned char n[256];
int sum, i;
for (i = 0; i < 256; ++i)
if (i % 2 == 0)
{
m[i] = (i % 8) * 2 + 1;
n[i] = -(i % 8);
}
else
{
m[i] = -((i % 8) * 2 + 2);
n[i] = -((i % 8) >> 1);
}
bar (m, n, 16, &sum);
if (sum != 32384)
abort ();
return 0;
}
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