COMPMID-2609: Enable quantization with multiplier greater than 1 on OpenCL

Change-Id: I050f1f84e214e61f7cbb0197a672b68a4940edae
Signed-off-by: Michele Di Giorgio <michele.digiorgio@arm.com>
Reviewed-on: https://review.mlplatform.org/c/2158
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Manuel Bottini <manuel.bottini@arm.com>
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Giorgio Arena <giorgio.arena@arm.com>

1 files changed, 3 insertions, 4 deletions

diff --git a/tests/validation/reference/FullyConnectedLayer.cpp b/tests/validation/reference/FullyConnectedLayer.cpp
index cd84b9cfd1..261c6453b9 100644
--- a/tests/validation/reference/FullyConnectedLayer.cpp
+++ b/tests/validation/reference/FullyConnectedLayer.cpp
@@ -81,7 +81,7 @@ void vector_matrix_multiply(const SimpleTensor<T> &src, const SimpleTensor<T> &w
     int         output_multiplier = 0;
     int         output_shift      = 0;
     const float multiplier        = input_scale * weights_scale / output_scale;
-    arm_compute::quantization::calculate_quantized_multiplier_less_than_one(multiplier, &output_multiplier, &output_shift);
+    arm_compute::quantization::calculate_quantized_multiplier(multiplier, &output_multiplier, &output_shift);
 
     for(int y = 0; y < rows_weights; ++y)
     {
@@ -96,9 +96,8 @@ void vector_matrix_multiply(const SimpleTensor<T> &src, const SimpleTensor<T> &w
         // Accumulate the bias
         acc += bias_ptr[y];
 
-        acc = asymm_rounding_divide_by_pow2(asymm_int_mult(acc, output_multiplier), output_shift);
-        acc += output_offset;
-        acc = utility::clamp<int32_t>(acc, 0, 255);
+        // Quantize down
+        acc = quantize_down_scale_by_fixedpoint(acc, output_multiplier, output_shift, output_offset, 0, 255);
 
         // Store the result
         dst_ptr[y] = static_cast<T>(acc);