inner_product_comp.pass.cpp [plain text]
#include <numeric>
#include <functional>
#include <cassert>
#include "../iterators.h"
template <class Iter1, class Iter2, class T>
void
test(Iter1 first1, Iter1 last1, Iter2 first2, T init, T x)
{
assert(std::inner_product(first1, last1, first2, init,
std::multiplies<int>(), std::plus<int>()) == x);
}
template <class Iter1, class Iter2>
void
test()
{
int a[] = {1, 2, 3, 4, 5, 6};
int b[] = {6, 5, 4, 3, 2, 1};
unsigned sa = sizeof(a) / sizeof(a[0]);
test(Iter1(a), Iter1(a), Iter2(b), 1, 1);
test(Iter1(a), Iter1(a), Iter2(b), 10, 10);
test(Iter1(a), Iter1(a+1), Iter2(b), 1, 7);
test(Iter1(a), Iter1(a+1), Iter2(b), 10, 70);
test(Iter1(a), Iter1(a+2), Iter2(b), 1, 49);
test(Iter1(a), Iter1(a+2), Iter2(b), 10, 490);
test(Iter1(a), Iter1(a+sa), Iter2(b), 1, 117649);
test(Iter1(a), Iter1(a+sa), Iter2(b), 10, 1176490);
}
int main()
{
test<input_iterator<const int*>, input_iterator<const int*> >();
test<input_iterator<const int*>, forward_iterator<const int*> >();
test<input_iterator<const int*>, bidirectional_iterator<const int*> >();
test<input_iterator<const int*>, random_access_iterator<const int*> >();
test<input_iterator<const int*>, const int*>();
test<forward_iterator<const int*>, input_iterator<const int*> >();
test<forward_iterator<const int*>, forward_iterator<const int*> >();
test<forward_iterator<const int*>, bidirectional_iterator<const int*> >();
test<forward_iterator<const int*>, random_access_iterator<const int*> >();
test<forward_iterator<const int*>, const int*>();
test<bidirectional_iterator<const int*>, input_iterator<const int*> >();
test<bidirectional_iterator<const int*>, forward_iterator<const int*> >();
test<bidirectional_iterator<const int*>, bidirectional_iterator<const int*> >();
test<bidirectional_iterator<const int*>, random_access_iterator<const int*> >();
test<bidirectional_iterator<const int*>, const int*>();
test<random_access_iterator<const int*>, input_iterator<const int*> >();
test<random_access_iterator<const int*>, forward_iterator<const int*> >();
test<random_access_iterator<const int*>, bidirectional_iterator<const int*> >();
test<random_access_iterator<const int*>, random_access_iterator<const int*> >();
test<random_access_iterator<const int*>, const int*>();
test<const int*, input_iterator<const int*> >();
test<const int*, forward_iterator<const int*> >();
test<const int*, bidirectional_iterator<const int*> >();
test<const int*, random_access_iterator<const int*> >();
test<const int*, const int*>();
}