1 /* 2 * Copyright (c) 2017-2019 Arm Limited. 3 * 4 * SPDX-License-Identifier: MIT 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a copy 7 * of this software and associated documentation files (the "Software"), to 8 * deal in the Software without restriction, including without limitation the 9 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or 10 * sell copies of the Software, and to permit persons to whom the Software is 11 * furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included in all 14 * copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 22 * SOFTWARE. 23 */ 24 #ifndef ARM_COMPUTE_ROUNDING_H 25 #define ARM_COMPUTE_ROUNDING_H 26 27 namespace arm_compute 28 { 29 /** Rounding method */ 30 enum class RoundingPolicy 31 { 32 TO_ZERO, /**< Truncates the least significant values that are lost in operations. */ 33 TO_NEAREST_UP, /**< Rounds to nearest value; half rounds away from zero */ 34 TO_NEAREST_EVEN, /**< Rounds to nearest value; half rounds to nearest even */ 35 }; 36 37 /** Return a rounded value of x. Rounding is done according to the rounding_policy. 38 * 39 * @param[in] x Float value to be rounded. 40 * @param[in] rounding_policy Policy determining how rounding is done. 41 * 42 * @return Rounded value of the argument x. 43 */ 44 int round(float x, RoundingPolicy rounding_policy); 45 } 46 #endif /*ARM_COMPUTE_ROUNDING_H */ 47