1  /* { dg-do run } */
       2  /* { dg-require-effective-target fma4 } */
       3  /* { dg-options "-O2 -mfma4" } */
       4  
       5  #include "fma4-check.h"
       6  
       7  #include <x86intrin.h>
       8  #include <string.h>
       9  
      10  #define NUM 20
      11  
      12  union
      13  {
      14    __m256 x[NUM];
      15    float f[NUM * 8];
      16    __m256d y[NUM];
      17    double d[NUM * 4];
      18  } dst, res, src1, src2, src3;
      19  
      20  /* Note that in macc*,msub*,mnmacc* and mnsub* instructions, the intermdediate 
      21     product is not rounded, only the addition is rounded. */
      22  
      23  static void
      24  init_maccps ()
      25  {
      26    int i;
      27    for (i = 0; i < NUM * 8; i++)
      28      {
      29        src1.f[i] = i;
      30        src2.f[i] = i + 10;
      31        src3.f[i] = i + 20;
      32      }
      33  }
      34  
      35  static void
      36  init_maccpd ()
      37  {
      38    int i;
      39    for (i = 0; i < NUM * 4; i++)
      40      {
      41        src1.d[i] = i;
      42        src2.d[i] = i + 10;
      43        src3.d[i] = i + 20;
      44      }
      45  }
      46  
      47  static int
      48  check_maccps ()
      49  {
      50    int i, j, check_fails = 0;
      51    for (i = 0; i < NUM * 8; i = i + 8)
      52      for (j = 0; j < 8; j++)
      53        {
      54  	res.f[i + j] = (src1.f[i + j] * src2.f[i + j]) + src3.f[i + j];
      55  	if (dst.f[i + j] != res.f[i + j]) 
      56  	  check_fails++;
      57        }
      58    return check_fails;
      59  }
      60  
      61  static int
      62  check_maccpd ()
      63  {
      64    int i, j, check_fails = 0;
      65    for (i = 0; i < NUM * 4; i = i + 4)
      66      for (j = 0; j < 4; j++)
      67        {
      68  	res.d[i + j] = (src1.d[i + j] * src2.d[i + j]) + src3.d[i + j];
      69  	if (dst.d[i + j] != res.d[i + j]) 
      70  	  check_fails++;
      71        }
      72    return check_fails;
      73  }
      74  
      75  static void
      76  fma4_test (void)
      77  {
      78    int i;
      79  
      80    init_maccps ();
      81    
      82    for (i = 0; i < NUM; i++)
      83      dst.x[i] = _mm256_macc_ps (src1.x[i], src2.x[i], src3.x[i]);
      84    
      85    if (check_maccps ()) 
      86      abort ();
      87  
      88    init_maccpd ();
      89    
      90    for (i = 0; i < NUM; i++)
      91      dst.y[i] = _mm256_macc_pd (src1.y[i], src2.y[i], src3.y[i]);
      92    
      93    if (check_maccpd ()) 
      94      abort ();  
      95  }