| /* |
| * Copyright (c) 2018 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. |
| */ |
| #include "helpers.h" |
| |
| #if defined(TYPE) && defined(SELECT_TYPE) |
| |
| #define CONST_ONE 1.f |
| #define ABS_OP(a) fabs((a)) |
| #define ADD_OP(a, b) ((a) + (b)) |
| #define SUB_OP(a, b) ((a) - (b)) |
| #define MUL_OP(a, b) ((a) * (b)) |
| #define MLA_OP(a, b, c) ((b) * (c) + (a)) |
| #define DIV_OP(a, b) ((a) / (b)) |
| #define EXP_OP(a) exp((a)) |
| #define LOG_OP(a) log((a)) |
| #define SQRT_OP(a) sqrt((a)) |
| #define TANH_OP(a) tanh((a)) |
| |
| // Logistic Activation |
| inline TYPE logistic_op(TYPE x) |
| { |
| return DIV_OP((TYPE)CONST_ONE, ADD_OP((TYPE)CONST_ONE, EXP_OP(-x))); |
| } |
| // Hyperbolic Tangent Activation |
| inline TYPE tanh_op(TYPE x) |
| { |
| return MUL_OP((TYPE)A_VAL, TANH_OP(MUL_OP((TYPE)B_VAL, x))); |
| } |
| // RELU Tangent Activation |
| inline TYPE relu_op(TYPE x) |
| { |
| return max((TYPE)0, x); |
| } |
| // Bounded RELU Activation |
| inline TYPE brelu_op(TYPE x) |
| { |
| return min((TYPE)A_VAL, max((TYPE)0, x)); |
| } |
| // Lower Upper Bounded RELU Activation |
| inline TYPE lu_brelu_op(TYPE x) |
| { |
| return min(max(x, (TYPE)B_VAL), (TYPE)A_VAL); |
| } |
| // Leaky RELU Activation |
| inline TYPE lrelu_op(TYPE x) |
| { |
| return select(MUL_OP((TYPE)A_VAL, x), x, CONVERT(x > (TYPE)0, SELECT_TYPE)); |
| } |
| // Soft RELU Activation |
| inline TYPE srelu_op(TYPE x) |
| { |
| return CONVERT(LOG_OP(ADD_OP((VEC_DATA_TYPE(float, VEC_SIZE))CONST_ONE, EXP_OP(CONVERT(x, VEC_DATA_TYPE(float, VEC_SIZE))))), TYPE); |
| } |
| // Absolute Activation |
| inline TYPE abs_op(TYPE x) |
| { |
| return ABS_OP(x); |
| } |
| // Square Activation |
| inline TYPE square_op(TYPE x) |
| { |
| return MUL_OP(x, x); |
| } |
| // Square-root Activation |
| inline TYPE sqrt_op(TYPE x) |
| { |
| return SQRT_OP(x); |
| } |
| // Linear Activation |
| inline TYPE linear_op(TYPE x) |
| { |
| return MLA_OP((TYPE)B_VAL, (TYPE)A_VAL, x); |
| } |
| |
| #define ACTIVATION_OP2(op, x) op##_op(x) |
| #define ACTIVATION_OP(op, x) ACTIVATION_OP2(op, x) |
| |
| #endif // defined(TYPE) && defined(SELECT_TYPE) |