Add all 4 variations of the SBGEMM to compare_sgemm_sbgemm

test/compare_sgemm_sbgemm.c

@@ -86,14 +86,26 @@ main (int argc, char *argv[])
 {
   blasint m, n, k;
   int i, j, l;
-  blasint x;
+  blasint x, y;
   int ret = 0;
   int loop = 100;
   char transA = 'N', transB = 'N';
   float alpha = 1.0, beta = 0.0;
 
   for (x = 0; x <= loop; x++)
+  {
+    for (y = 0; y < 4; y++)
     {
+      if ((y == 0) || (y == 2)) {
+        transA = 'N';
+      } else {
+        transA = 'T';
+      }
+      if ((y == 0) || (y == 1)) {
+        transB = 'N';
+      } else {
+        transB = 'T';
+      }
       m = k = n = x;
       float A[m * k];
       float B[k * n];
@@ -104,43 +116,55 @@ main (int argc, char *argv[])
       blasint one=1;
 
       for (j = 0; j < m; j++)
-	{
-	  for (i = 0; i < m; i++)
-	    {
-	      A[j * k + i] = ((FLOAT) rand () / (FLOAT) RAND_MAX) + 0.5;
-	      B[j * k + i] = ((FLOAT) rand () / (FLOAT) RAND_MAX) + 0.5;
-	      C[j * k + i] = 0;
-	      sbstobf16_(&one, &A[j*k+i], &one, &atmp, &one);
-	      sbstobf16_(&one, &B[j*k+i], &one, &btmp, &one);
-	      AA[j * k + i].v = atmp;
-	      BB[j * k + i].v = btmp;
-	      CC[j * k + i] = 0;
-	      DD[j * k + i] = 0;
-	    }
-	}
+      {
+        for (i = 0; i < m; i++)
+        {
+          A[j * k + i] = ((FLOAT) rand () / (FLOAT) RAND_MAX) + 0.5;
+          B[j * k + i] = ((FLOAT) rand () / (FLOAT) RAND_MAX) + 0.5;
+          C[j * k + i] = 0;
+          sbstobf16_(&one, &A[j*k+i], &one, &atmp, &one);
+          sbstobf16_(&one, &B[j*k+i], &one, &btmp, &one);
+          AA[j * k + i].v = atmp;
+          BB[j * k + i].v = btmp;
+          CC[j * k + i] = 0;
+          DD[j * k + i] = 0;
+        }
+      }
       SGEMM (&transA, &transB, &m, &n, &k, &alpha, A,
-	     &m, B, &k, &beta, C, &m);
+        &m, B, &k, &beta, C, &m);
       SBGEMM (&transA, &transB, &m, &n, &k, &alpha, (bfloat16*) AA,
-	      &m, (bfloat16*)BB, &k, &beta, CC, &m);
+        &m, (bfloat16*)BB, &k, &beta, CC, &m);
+      for (i = 0; i < n; i++)
+        for (j = 0; j < m; j++)
+          if (fabs (CC[i * m + j] - C[i * m + j]) > 1.0)
+            ret++;
       for (i = 0; i < n; i++)
-	for (j = 0; j < m; j++)
-	    if (fabs (CC[i * m + j] - C[i * m + j]) > 1.0)
-	      ret++;
-      if (transA == 'N' && transB == 'N')
-	{
-	  for (i = 0; i < n; i++)
-	    for (j = 0; j < m; j++)
-	      for (l = 0; l < k; l++)
-		{
-		  DD[i * m + j] +=
-		    float16to32 (AA[l * m + j]) * float16to32 (BB[l + k * i]);
-		}
-	  for (i = 0; i < n; i++)
-	    for (j = 0; j < m; j++)
-		if (CC[i * m + j] != DD[i * m + j])
-		  ret++;
-	}
+        for (j = 0; j < m; j++)
+          for (l = 0; l < k; l++)
+            if (transA == 'N' && transB == 'N')
+            {
+              DD[i * m + j] +=
+                float16to32 (AA[l * m + j]) * float16to32 (BB[l + k * i]);
+            } else if (transA == 'T' && transB == 'N')
+            {
+              DD[i * m + j] +=
+                float16to32 (AA[k * j + l]) * float16to32 (BB[l + k * i]);
+            } else if (transA == 'N' && transB == 'T')
+            {
+              DD[i * m + j] +=
+                float16to32 (AA[l * m + j]) * float16to32 (BB[i + l * n]);
+            } else if (transA == 'T' && transB == 'T')
+            {
+              DD[i * m + j] +=
+                float16to32 (AA[k * j + l]) * float16to32 (BB[i + l * n]);
+            }
+      for (i = 0; i < n; i++)
+        for (j = 0; j < m; j++)
+          if (CC[i * m + j] != DD[i * m + j])
+            ret++;
     }
+  }
+
   if (ret != 0)
     fprintf (stderr, "FATAL ERROR SBGEMM - Return code: %d\n", ret);
   return ret;