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// Build don't link:
template<unsigned int n> struct PartialDotProduct {
template<class T>
static T Expand(T* a, T* b) { return T(); }
};
const int N = 10;
template<class In1, class In2>
void
dot(In1 f1, In2 f2)
{
PartialDotProduct<N>::Expand(f1, f2);
}
int main()
{
double a[N], b[N];
dot(&a[0], &b[0]);
}
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