COMPMID-3237: Add support for QSYMM16 ArithmeticSubtraction on NEON

Change-Id: Ib38796e52665233351b181bf3417eb5650ad7ca7
Signed-off-by: Michele Di Giorgio <michele.digiorgio@arm.com>
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/2939
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Michalis Spyrou <michalis.spyrou@arm.com>
Tested-by: Arm Jenkins <bsgcomp@arm.com>
diff --git a/arm_compute/core/NEON/kernels/NEArithmeticSubtractionKernel.h b/arm_compute/core/NEON/kernels/NEArithmeticSubtractionKernel.h
index e90c8b5..919c685 100644
--- a/arm_compute/core/NEON/kernels/NEArithmeticSubtractionKernel.h
+++ b/arm_compute/core/NEON/kernels/NEArithmeticSubtractionKernel.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-2019 ARM Limited.
+ * Copyright (c) 2016-2020 ARM Limited.
  *
  * SPDX-License-Identifier: MIT
  *
@@ -66,20 +66,20 @@
      *   - (F16,F16)                        -> F16
      *   - (F32,F32)                        -> F32
      *
-     * @param[in]  input1 An input tensor. Data types supported: U8/QASYMM8/QASYMM8_SIGNED/S16/F16/F32
-     * @param[in]  input2 An input tensor. Data types supported: U8/QASYMM8/QASYMM8_SIGNED/S16/F16/F32
-     * @param[out] output The output tensor. Data types supported: U8/QASYMM8/QASYMM8_SIGNED/S16/F16/F32.
-     * @param[in]  policy Overflow policy. Convert policy cannot be WRAP if datatype is QASYMM8/QASYMM8_SIGNED
+     * @param[in]  input1 An input tensor. Data types supported: U8/QASYMM8/QASYMM8_SIGNED/QSYMM16/S16/F16/F32
+     * @param[in]  input2 An input tensor. Data types supported: U8/QASYMM8/QASYMM8_SIGNED/QSYMM16/S16/F16/F32
+     * @param[out] output The output tensor. Data types supported: U8/QASYMM8/QASYMM8_SIGNED/QSYMM16/S16/F16/F32.
+     * @param[in]  policy Overflow policy. Convert policy cannot be WRAP if datatype is quantized.
      */
     void configure(const ITensor *input1, const ITensor *input2, ITensor *output, ConvertPolicy policy);
     /** Static function to check if given info will lead to a valid configuration of @ref NEArithmeticSubtractionKernel
      *
      * @note Convert policy cannot be WRAP if datatype is QASYMM8
      *
-     * @param[in] input1 First tensor input. Data types supported: U8/QASYMM8/S16/F16/F32
-     * @param[in] input2 Second tensor input. Data types supported: U8/QASYMM8/S16/F16/F32
-     * @param[in] output Output tensor. Data types supported: U8/QASYMM8/S16/F16/F32
-     * @param[in] policy Policy to use to handle overflow. Convert policy cannot be WRAP if datatype is QASYMM8
+     * @param[in] input1 An input tensor info. Data types supported: U8/QASYMM8/QASYMM8_SIGNED/QSYMM16/S16/F16/F32
+     * @param[in] input2 An input tensor info. Data types supported: U8/QASYMM8/QASYMM8_SIGNED/QSYMM16/S16/F16/F32
+     * @param[in] output The output tensor info. Data types supported: U8/QASYMM8/QASYMM8_SIGNED/QSYMM16/S16/F16/F32.
+     * @param[in] policy Policy to use to handle overflow. Convert policy cannot be WRAP if datatype is quantized.
      *
      * @return a status
      */
@@ -92,9 +92,9 @@
 private:
     /** Common signature for all the specialised sub functions
      *
-     * @param[in]  input1 An input tensor. Data types supported: U8/QASYMM8/QASYMM8_SIGNED/S16/F16/F32
-     * @param[in]  input2 An input tensor. Data types supported: U8/QASYMM8/QASYMM8_SIGNED/S16/F16/F32
-     * @param[out] output The output tensor. Data types supported: U8/QASYMM8/QASYMM8_SIGNED/S16/F16/F32.
+     * @param[in]  input1 An input tensor. Data types supported: U8/QASYMM8/QASYMM8_SIGNED/QSYMM16/S16/F16/F32
+     * @param[in]  input2 An input tensor. Data types supported: U8/QASYMM8/QASYMM8_SIGNED/QSYMM16/S16/F16/F32
+     * @param[out] output The output tensor. Data types supported: U8/QASYMM8/QASYMM8_SIGNED/QSYMM16/S16/F16/F32.
      * @param[in]  window Region on which to execute the kernel.
      */
     using SubFunction = void(const ITensor *input1, const ITensor *input2, ITensor *output, const Window &window);