Add non zero filter offset support for FC (#110)

Fully connected can handle a non zero filter offset. Added a unit test
as well.

Co-authored-by: Adrian Lundell <adrian.lundell@arm.com>

Include/arm_nnsupportfunctions.h

@@ -21,8 +21,8 @@
  * Title:        arm_nnsupportfunctions.h
  * Description:  Public header file of support functions for CMSIS NN Library
  *
- * $Date:        31 January 2024
- * $Revision:    V.18.1.0
+ * $Date:        14 February 2024
+ * $Revision:    V.19.0.0
  *
  * Target :  Arm(R) M-Profile Architecture
  * -------------------------------------------------------------------- */
@@ -529,6 +529,8 @@ arm_cmsis_nn_status arm_nn_vec_mat_mult_t_s4(const int8_t *lhs,
  * @param[in]      activation_max  Maximum value to clamp the output to. Range: int8
  * @param[in]      address_offset  Memory position offset for dst. First output is stored at 'dst', the
  *                                 second at 'dst + address_offset' and so on. Default value is typically 1.
+ * @param[in]      rhs_offset      Offset to be added to the input values of the right-hand side vector.
+ *                                 Range: -127 to 128
  *
  * @return         The function returns <code>ARM_CMSIS_NN_SUCCESS</code>
  *
@@ -546,7 +548,8 @@ arm_cmsis_nn_status arm_nn_vec_mat_mult_t_s8(const int8_t *lhs,
                                              const int32_t rhs_rows,
                                              const int32_t activation_min,
                                              const int32_t activation_max,
-                                             const int32_t address_offset);
+                                             const int32_t address_offset,
+                                             const int32_t rhs_offset);
 
 /**
  * @brief s16 Vector by Matrix (transposed) multiplication

Source/FullyConnectedFunctions/arm_fully_connected_s8.c

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: Copyright 2010-2023 Arm Limited and/or its affiliates <open-source-office@arm.com>
+ * SPDX-FileCopyrightText: Copyright 2010-2024 Arm Limited and/or its affiliates <open-source-office@arm.com>
  *
  * SPDX-License-Identifier: Apache-2.0
  *
@@ -21,8 +21,8 @@
  * Title:        arm_fully_connected_s8
  * Description:  Fully connected function compatible with TF Lite.
  *
- * $Date:        23 October 2023
- * $Revision:    V.5.2.0
+ * $Date:        6 February 2024
+ * $Revision:    V.5.3.0
  *
  * Target :  Arm(R) M-Profile Architecture
  *
@@ -60,7 +60,6 @@ arm_cmsis_nn_status arm_fully_connected_s8(const cmsis_nn_context *ctx,
                                            int8_t *output)
 {
     (void)bias_dims;
-    (void)fc_params->filter_offset;
 
     int32_t batch_cnt = input_dims->n;
 
@@ -71,10 +70,11 @@ arm_cmsis_nn_status arm_fully_connected_s8(const cmsis_nn_context *ctx,
     }
 #endif
 
-    const int32_t *kernel_sum = (const int32_t *) ctx->buf;
+    const int32_t *kernel_sum = (const int32_t *)ctx->buf;
 
     while (batch_cnt)
     {
+
         arm_nn_vec_mat_mult_t_s8(input,
                                  kernel,
                                  kernel_sum,
@@ -88,7 +88,8 @@ arm_cmsis_nn_status arm_fully_connected_s8(const cmsis_nn_context *ctx,
                                  output_dims->c, /* row_dim or output_depth */
                                  fc_params->activation.min,
                                  fc_params->activation.max,
-                                 1L);
+                                 1L,
+                                 fc_params->filter_offset);
 
         input += filter_dims->n;
         output += output_dims->c;