| /* |
| * Copyright (c) 2019-2020 Arm Limited. |
| * |
| * SPDX-License-Identifier: MIT |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a copy |
| * of this software and associated documentation files (the "Software"), to |
| * deal in the Software without restriction, including without limitation the |
| * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or |
| * sell copies of the Software, and to permit persons to whom the Software is |
| * furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in all |
| * copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| * SOFTWARE. |
| */ |
| #pragma once |
| |
| namespace arm_gemm |
| { |
| |
| // Fallback routine to add bias to a block |
| template<typename T> |
| inline void bias_adder(T *out, unsigned int stride, const T *bias, unsigned int rows, unsigned int cols) { |
| for (unsigned int row=0; row<rows; row++) { |
| for (unsigned int col=0; col<cols; col++) { |
| out[row * stride + col] += bias[col]; |
| } |
| } |
| } |
| |
| template<bool DoBias, typename T> |
| inline void activator(T *out, unsigned int stride, const T *bias, Activation act, unsigned int rows, unsigned int cols) { |
| if (act.type == Activation::Type::None) { |
| if (DoBias) { |
| bias_adder(out, stride, bias, rows, cols); |
| } |
| return; |
| } |
| |
| if (act.type == Activation::Type::ReLU) { |
| for (unsigned int row=0; row<rows; row++) { |
| for (unsigned int col=0; col<cols; col++) { |
| T &v = out[row * stride + col]; |
| if (DoBias) { |
| v += bias[col]; |
| } |
| v = std::max(static_cast<T>(0), v); |
| } |
| } |
| } |
| |
| if (act.type == Activation::Type::BoundedReLU) { |
| const T max = static_cast<T>(act.param1); |
| |
| for (unsigned int row=0; row<rows; row++) { |
| for (unsigned int col=0; col<cols; col++) { |
| T &v = out[row * stride + col]; |
| if (DoBias) { |
| v += bias[col]; |
| } |
| v = std::max(static_cast<T>(0), std::min(v, max)); |
| } |
| } |
| } |
| } |
| |
| } // namespace arm_gemm |