diff options
Diffstat (limited to 'arm_compute/core/utils/math')
| -rw-r--r-- | arm_compute/core/utils/math/Math.h | 71 | ||||
| -rw-r--r-- | arm_compute/core/utils/math/SafeOps.h | 35 |
2 files changed, 89 insertions, 17 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 */ diff --git a/arm_compute/core/utils/math/SafeOps.h b/arm_compute/core/utils/math/SafeOps.h index c222c65e84..ef8bcf7e14 100644 --- a/arm_compute/core/utils/math/SafeOps.h +++ b/arm_compute/core/utils/math/SafeOps.h @@ -1,5 +1,5 @@ /* - * Copyright (c) 2019-2020 Arm Limited. + * Copyright (c) 2019-2021, 2023 Arm Limited. * * SPDX-License-Identifier: MIT * @@ -25,7 +25,8 @@ #define ARM_COMPUTE_UTILS_MATH_SAFE_OPS #include "arm_compute/core/Error.h" -#include "support/Requires.h" + +#include "support/AclRequires.h" #include <limits> @@ -46,16 +47,16 @@ namespace math * * @return The addition result */ -template <typename T, REQUIRES_TA(std::is_integral<T>::value)> +template <typename T, ARM_COMPUTE_REQUIRES_TA(std::is_integral<T>::value)> T safe_integer_add(T val_a, T val_b) { T result = 0; - if((val_b > 0) && (val_a > std::numeric_limits<T>::max() - val_b)) + if ((val_b > 0) && (val_a > std::numeric_limits<T>::max() - val_b)) { result = std::numeric_limits<T>::max(); } - else if((val_b < 0) && (val_a < std::numeric_limits<T>::min() - val_b)) + else if ((val_b < 0) && (val_a < std::numeric_limits<T>::min() - val_b)) { result = std::numeric_limits<T>::min(); } @@ -78,16 +79,16 @@ T safe_integer_add(T val_a, T val_b) * * @return The subtraction result */ -template <typename T, REQUIRES_TA(std::is_integral<T>::value)> +template <typename T, ARM_COMPUTE_REQUIRES_TA(std::is_integral<T>::value)> T safe_integer_sub(T val_a, T val_b) { T result = 0; - if((val_b < 0) && (val_a > std::numeric_limits<T>::max() + val_b)) + if ((val_b < 0) && (val_a > std::numeric_limits<T>::max() + val_b)) { result = std::numeric_limits<T>::max(); } - else if((val_b > 0) && (val_a < std::numeric_limits<T>::min() + val_b)) + else if ((val_b > 0) && (val_a < std::numeric_limits<T>::min() + val_b)) { result = std::numeric_limits<T>::min(); } @@ -110,18 +111,18 @@ T safe_integer_sub(T val_a, T val_b) * * @return The multiplication result */ -template <typename T, REQUIRES_TA(std::is_integral<T>::value)> +template <typename T, ARM_COMPUTE_REQUIRES_TA(std::is_integral<T>::value)> T safe_integer_mul(T val_a, T val_b) { T result = 0; - if(val_a > 0) + if (val_a > 0) { - if((val_b > 0) && (val_a > (std::numeric_limits<T>::max() / val_b))) + if ((val_b > 0) && (val_a > (std::numeric_limits<T>::max() / val_b))) { result = std::numeric_limits<T>::max(); } - else if(val_b < (std::numeric_limits<T>::min() / val_a)) + else if (val_b < (std::numeric_limits<T>::min() / val_a)) { result = std::numeric_limits<T>::min(); } @@ -132,11 +133,11 @@ T safe_integer_mul(T val_a, T val_b) } else { - if((val_b > 0) && (val_a < (std::numeric_limits<T>::min() / val_b))) + if ((val_b > 0) && (val_a < (std::numeric_limits<T>::min() / val_b))) { result = std::numeric_limits<T>::max(); } - else if((val_a != 0) && (val_b < (std::numeric_limits<T>::max() / val_a))) + else if ((val_a != 0) && (val_b < (std::numeric_limits<T>::max() / val_a))) { result = std::numeric_limits<T>::min(); } @@ -160,12 +161,12 @@ T safe_integer_mul(T val_a, T val_b) * * @return The quotient */ -template <typename T, REQUIRES_TA(std::is_integral<T>::value)> +template <typename T, ARM_COMPUTE_REQUIRES_TA(std::is_integral<T>::value)> T safe_integer_div(T val_a, T val_b) { T result = 0; - if((val_b == 0) || ((val_a == std::numeric_limits<T>::min()) && (val_b == -1))) + if ((val_b == 0) || ((val_a == std::numeric_limits<T>::min()) && (val_b == -1))) { result = std::numeric_limits<T>::min(); } @@ -176,7 +177,7 @@ T safe_integer_div(T val_a, T val_b) return result; } -} // namespace cast +} // namespace math } // namespace utils } // namespace arm_compute #endif /* ARM_COMPUTE_UTILS_MATH_SAFE_OPS */ |