Simple aligned allocator for use with std::vector and DirectXMath in Visual Studio 2013.

AlignedAllocator.h

#include <memory>
#include <vector>

struct XMVECTOR
{
    float x, y, z, w;
};

template <typename T, unsigned int Alignment = 16>
class AlignedAllocator : public std::allocator<T>
{
public:
    typedef typename std::allocator<T>::pointer pointer;
    typedef typename std::allocator<T>::size_type size_type;

    pointer allocate(size_type n, std::allocator<void>::const_pointer = 0)
    {
        return reinterpret_cast<pointer>(_aligned_malloc(n * sizeof(T), Alignment));
    }

    void deallocate(pointer p, size_type) 
    {
        _aligned_free(p);
    }
};

std::vector<XMVECTOR, AlignedAllocator<XMVECTOR>> samples;