| /* |
| * Copyright (c) 2017-2018, 2023 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. |
| */ |
| #ifndef ARM_COMPUTE_UTILS_MATH_H |
| #define ARM_COMPUTE_UTILS_MATH_H |
| |
| namespace arm_compute |
| { |
| /** Calculate the rounded up quotient of val / m. |
| * |
| * @param[in] val Value to divide and round up. |
| * @param[in] m Value to divide by. |
| * |
| * @return the result. |
| */ |
| template <typename S, typename T> |
| constexpr auto DIV_CEIL(S val, T m) -> decltype((val + m - 1) / m) |
| { |
| return (val + m - 1) / m; |
| } |
| |
| /** Computes the smallest number larger or equal to value that is a multiple of divisor. |
| * |
| * @param[in] value Lower bound value |
| * @param[in] divisor Value to compute multiple of. |
| * |
| * @return the result. |
| */ |
| template <typename S, typename T> |
| inline auto ceil_to_multiple(S value, T divisor) -> decltype(((value + divisor - 1) / divisor) * divisor) |
| { |
| ARM_COMPUTE_ERROR_ON(value < 0 || divisor <= 0); |
| return DIV_CEIL(value, divisor) * divisor; |
| } |
| |
| /** Computes the largest number smaller or equal to value that is a multiple of divisor. |
| * |
| * @param[in] value Upper bound value |
| * @param[in] divisor Value to compute multiple of. |
| * |
| * @return the result. |
| */ |
| template <typename S, typename T> |
| inline auto floor_to_multiple(S value, T divisor) -> decltype((value / divisor) * divisor) |
| { |
| ARM_COMPUTE_ERROR_ON(value < 0 || divisor <= 0); |
| return (value / divisor) * divisor; |
| } |
| |
| } |
| #endif /*ARM_COMPUTE_UTILS_MATH_H */ |