diff options
Diffstat (limited to 'src/core/NEON/kernels/arm_gemm/bias_adder.hpp')
-rw-r--r-- | src/core/NEON/kernels/arm_gemm/bias_adder.hpp | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/src/core/NEON/kernels/arm_gemm/bias_adder.hpp b/src/core/NEON/kernels/arm_gemm/bias_adder.hpp new file mode 100644 index 0000000000..745d00563b --- /dev/null +++ b/src/core/NEON/kernels/arm_gemm/bias_adder.hpp @@ -0,0 +1,75 @@ +/* + * Copyright (c) 2019 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 |