void
test()
{
int ia[] = {0, 1, 2, 3, 4};
const unsigned sa = sizeof(ia)/sizeof(ia[0]);
int ib[sa] = {1, 2, 3, 4, 5};
OutIter r = std::transform(InIter1(ib), InIter1(ib+sa), InIter2(ia),
OutIter(ib), std::minus<int>());
assert(base(r) == ib + sa);
assert(ib[0] == 1);
assert(ib[1] == 1);
assert(ib[2] == 1);
assert(ib[3] == 1);
assert(ib[4] == 1);
}
void
test()
{
{
unsigned N = 100000;
int* ia = new int[N];
int* ib = new int[N];
int* ic = new int[2*N];
for (unsigned i = 0; i < N; ++i)
ia[i] = 2*i;
for (unsigned i = 0; i < N; ++i)
ib[i] = 2*i+1;
std::reverse(ia, ia+N);
std::reverse(ib, ib+N);
OutIter r = std::merge(InIter1(ia), InIter1(ia+N),
InIter2(ib), InIter2(ib+N), OutIter(ic), std::greater<int>());
assert(base(r) == ic+2*N);
assert(ic[0] == 2*N-1);
assert(ic[2*N-1] == 0);
assert(std::is_sorted(ic, ic+2*N, std::greater<int>()));
delete [] ic;
delete [] ib;
delete [] ia;
}
{
unsigned N = 100;
int* ia = new int[N];
int* ib = new int[N];
int* ic = new int[2*N];
for (unsigned i = 0; i < 2*N; ++i)
ic[i] = i;
std::random_shuffle(ic, ic+2*N);
std::copy(ic, ic+N, ia);
std::copy(ic+N, ic+2*N, ib);
std::sort(ia, ia+N, std::greater<int>());
std::sort(ib, ib+N, std::greater<int>());
OutIter r = std::merge(InIter1(ia), InIter1(ia+N),
InIter2(ib), InIter2(ib+N), OutIter(ic), std::greater<int>());
assert(base(r) == ic+2*N);
assert(ic[0] == 2*N-1);
assert(ic[2*N-1] == 0);
assert(std::is_sorted(ic, ic+2*N, std::greater<int>()));
delete [] ic;
delete [] ib;
delete [] ia;
}
}