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Sory, don't undestand much SSE, but why this constructor was commented:
__forceinline ssef ( float a ) : m128(_mm_set1_ps(a)) {}
and now this one is used:
__forceinline ssef ( const float& a ) : m128(_mm_castsi128_ps(_mm_shuffle_epi32(_mm_castps_si128(_mm_load_ss(&a)), _MM_SHUFFLE(0, 0, 0, 0)))) {}
The other constructors are still using _mm_set_ps().
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