#define gmx_mm_castsi128_ps(a) _mm_castsi128_ps(a)
#define _GMX_MM_BLEND256D(b3, b2, b1, b0) (((b3) << 3) | ((b2) << 2) | ((b1) << 1) | ((b0)))
#define gmx_mm_castsi128_ps(a) _mm_castsi128_ps(a)
#define _GMX_MM_BLEND256D(b3, b2, b1, b0) (((b3) << 3) | ((b2) << 2) | ((b1) << 1) | ((b0)))