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add beta and alpha testcase for sbgemv #5162

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Mar 3, 2025
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add beta and alpha testcase for sbgemv #5162

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19 changes: 14 additions & 5 deletions test/compare_sgemm_sbgemm.c
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Original file line number Diff line number Diff line change
@@ -1,5 +1,5 @@
/***************************************************************************
Copyright (c) 2020, The OpenBLAS Project
Copyright (c) 2020,2025 The OpenBLAS Project
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
Expand Down Expand Up @@ -202,6 +202,8 @@ main (int argc, char *argv[])
return ret;
}

for (beta = 0; beta < 3; beta += 1) {
for (alpha = 0; alpha < 3; alpha += 1) {
for (l = 0; l < 2; l++) { // l = 1 to test inc_x & inc_y not equal to one.
for (x = 1; x <= loop; x++)
{
Expand Down Expand Up @@ -230,7 +232,10 @@ main (int argc, char *argv[])
B[j << l] = ((FLOAT) rand () / (FLOAT) RAND_MAX) + 0.5;
sbstobf16_(&one, &B[j << l], &one, &btmp, &one);
BB[j << l].v = btmp;

CC[j << l] = C[j << l] = ((FLOAT) rand () / (FLOAT) RAND_MAX) + 0.5;
}

for (y = 0; y < 2; y++)
{
if (y == 0) {
Expand All @@ -246,12 +251,14 @@ main (int argc, char *argv[])
SGEMV (&transA, &x, &x, &alpha, A, &x, B, &k, &beta, C, &k);
SBGEMV (&transA, &x, &x, &alpha, (bfloat16*) AA, &x, (bfloat16*) BB, &k, &beta, CC, &k);

for (int i = 0; i < x; i ++) DD[i] *= beta;

for (j = 0; j < x; j++)
for (i = 0; i < x; i++)
if (transA == 'N') {
DD[i] += float16to32 (AA[j * x + i]) * float16to32 (BB[j << l]);
DD[i] += alpha * float16to32 (AA[j * x + i]) * float16to32 (BB[j << l]);
} else if (transA == 'T') {
DD[j] += float16to32 (AA[j * x + i]) * float16to32 (BB[i << l]);
DD[j] += alpha * float16to32 (AA[j * x + i]) * float16to32 (BB[i << l]);
}

for (j = 0; j < x; j++) {
Expand All @@ -268,8 +275,10 @@ main (int argc, char *argv[])
free(BB);
free(DD);
free(CC);
}
}
} // x
} // l
} // alpha
} // beta

if (ret != 0)
fprintf (stderr, "FATAL ERROR SBGEMV - Return code: %d\n", ret);
Expand Down
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