C style cast versus intrinsic cast

问题

Let's assume i have defined __m256d x and that I want to extract the lower 128-bits. I would do:

__m128d xlow = _mm256_castpd256_pd128(x);

However, I recently saw someone do:

__m128d xlow = (__m128d) x

Is there a prefered method to use for the cast? Why use the first method?

来源：https://stackoverflow.com/questions/20401413/c-style-cast-versus-intrinsic-cast