Hi,

for (cnt = maxsize/sizeof(long); cnt > 0; cnt >>= 1) { addr = base + cnt; /* pointer arith! */ save[i++] = *addr; *addr = ~cnt; }

** write 0 to base address ** addr = base; save[i] = *addr; *addr = 0;

** check at base address ** if ((val = *addr) != 0) { *addr = save[i]; return (0); }

for (cnt = 1; cnt <= maxsize/sizeof(long); cnt <<= 1) { addr = base + cnt; ** pointer arith! **

val = *addr; *addr = save[--i];

if (val != (~cnt)) { return (cnt * sizeof(long)); } }

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