Compilation of a simple c++ program using SSE intrinsics

Question

I am new to the SSE instructions and I was trying to learn them from this site: http://www.codeproject.com/Articles/4522/Introduction-to-SSE-Programming

I am using t

Answer 1

_aligned_malloc and _aligned_free are Microsoft-isms. Use posix_memalign or memalign on Linux et al. For Mac OS X you can just use malloc, as it is always 16 byte aligned. For portable SSE code you generally want to implement wrapper functions for aligned memory allocations, e.g.

void * malloc_simd(const size_t size)
{
#if defined WIN32           // WIN32
    return _aligned_malloc(size, 16);
#elif defined __linux__     // Linux
    return memalign(16, size);
#elif defined __MACH__      // Mac OS X
    return malloc(size);
#else                       // other (use valloc for page-aligned memory)
    return valloc(size);
#endif
}

Implementation of free_simd is left as an exercise for the reader.