b.cpp

#include <iostream>
#include <xmmintrin.h>


void foo(const float num, const float denom)
{
    typedef __v4sf Vec4;
    //typedef __m128 Vec4;
    const Vec4 num4 = {
        num,
        num,
        num,
        num,
    };
    const Vec4 denom4 = {
        denom,
        denom,
        denom,
        denom,
    };

    //float res_arr[4] __attribute__ ((aligned (16)));
    Vec4 res;// = (Vec4*)res_arr;
    res = num4 / denom4;
    float *res_arr=(float*)&res;
    std::cout << res_arr[0] << std::endl;
    std::cout << res_arr[1] << std::endl;
    std::cout << res_arr[2] << std::endl;
    std::cout << res_arr[3] << std::endl;
}