static const _declspec(align(16)) int _ps256_inv_sign_mask[8] = { ~0x80000000, ~0x80000000, ~0x80000000, ~0x80000000 ,~0x80000000, ~0x80000000, ~0x80000000, ~0x80000000 };
__m256 _mm256_abs_ps(__m256 x){
return _mm256_and_ps(x,*(__m256 *)_ps256_inv_sign_mask);
}