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Diffstat (limited to 'arm_compute/core/utils/math/Math.h')
-rw-r--r-- | arm_compute/core/utils/math/Math.h | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/arm_compute/core/utils/math/Math.h b/arm_compute/core/utils/math/Math.h new file mode 100644 index 0000000000..e70337ba0f --- /dev/null +++ b/arm_compute/core/utils/math/Math.h @@ -0,0 +1,71 @@ +/* + * 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; +} + +} // namespace arm_compute +#endif /*ARM_COMPUTE_UTILS_MATH_H */ |