Facundo Ciccioli wrote:
> unsigned long long a;
> unsigned s= 63;
>
> a= (1 << s);
The problem is that 1 is a signed integer constant not an unsigned long long constant, and there's no mechanism to automatically spot that you really meant it to be an unsigned long long constant. So this code does mean compute a shift on a 32-bit integer then extend the result into a 64-bit variable. Try:
a = (1ULL << s);
instead.
Rup.
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