1  typedef __bf16 __m128bf16 __attribute__((__vector_size__(16), __aligned__(16)));
       2  typedef __bf16 __m256bf16 __attribute__((__vector_size__(32), __aligned__(32)));
       3  typedef __bf16 __m512bf16 __attribute__((__vector_size__(64), __aligned__(64)));
       4  
       5  typedef union
       6  {
       7    float f;
       8    unsigned int u;
       9    __bf16 b[2];
      10  } unionf_b;
      11  
      12  static __bf16 make_f32_bf16 (float f)
      13  {
      14    unionf_b tmp;
      15    tmp.f = f;
      16    return tmp.b[1];
      17  }
      18  
      19  static float make_bf16_f32 (__bf16 bf)
      20  {
      21    unionf_b tmp;
      22    tmp.u = 0;
      23    tmp.b[1] = bf;
      24    return tmp.f;
      25  }
      26  
      27  static int check_bf16 (__bf16 bf1, __bf16 bf2)
      28  {
      29    unionf_b tmp1, tmp2;
      30    tmp1.u = 0;
      31    tmp2.u = 0;
      32    tmp1.b[1] = bf1;
      33    tmp2.b[1] = bf2;
      34    return (tmp1.u == tmp2.u);
      35  }
      36  
      37  static int check_bf16_float (__bf16 bf, float f)
      38  {
      39    unionf_b tmp1, tmp2;
      40    tmp1.u = 0;
      41    tmp1.b[0] = bf;
      42    tmp2.f = f;
      43    tmp2.u >>= 16;
      44    return (tmp1.u == tmp2.u);
      45  }