1 /****************************************************************************** 2 * Copyright (c) 2011, Duane Merrill. All rights reserved. 3 * Copyright (c) 2011-2018, NVIDIA CORPORATION. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are met: 7 * * Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * * Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * * Neither the name of the NVIDIA CORPORATION nor the 13 * names of its contributors may be used to endorse or promote products 14 * derived from this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 19 * DISCLAIMED. IN NO EVENT SHALL NVIDIA CORPORATION BE LIABLE FOR ANY 20 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 23 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 25 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 * 27 ******************************************************************************/ 28 29 /****************************************************************************** 30 * Common C/C++ macro utilities 31 ******************************************************************************/ 32 33 #pragma once 34 35 #include "util_namespace.cuh" 36 37 /// Optional outer namespace(s) 38 CUB_NS_PREFIX 39 40 /// CUB namespace 41 namespace cub { 42 43 44 /** 45 * \addtogroup UtilModule 46 * @{ 47 */ 48 49 #ifndef CUB_ALIGN 50 #if defined(_WIN32) || defined(_WIN64) 51 /// Align struct 52 #define CUB_ALIGN(bytes) __declspec(align(32)) 53 #else 54 /// Align struct 55 #define CUB_ALIGN(bytes) __attribute__((aligned(bytes))) 56 #endif 57 #endif 58 59 #ifndef CUB_MAX 60 /// Select maximum(a, b) 61 #define CUB_MAX(a, b) (((b) > (a)) ? (b) : (a)) 62 #endif 63 64 #ifndef CUB_MIN 65 /// Select minimum(a, b) 66 #define CUB_MIN(a, b) (((b) < (a)) ? (b) : (a)) 67 #endif 68 69 #ifndef CUB_QUOTIENT_FLOOR 70 /// Quotient of x/y rounded down to nearest integer 71 #define CUB_QUOTIENT_FLOOR(x, y) ((x) / (y)) 72 #endif 73 74 #ifndef CUB_QUOTIENT_CEILING 75 /// Quotient of x/y rounded up to nearest integer 76 #define CUB_QUOTIENT_CEILING(x, y) (((x) + (y) - 1) / (y)) 77 #endif 78 79 #ifndef CUB_ROUND_UP_NEAREST 80 /// x rounded up to the nearest multiple of y 81 #define CUB_ROUND_UP_NEAREST(x, y) ((((x) + (y) - 1) / (y)) * y) 82 #endif 83 84 #ifndef CUB_ROUND_DOWN_NEAREST 85 /// x rounded down to the nearest multiple of y 86 #define CUB_ROUND_DOWN_NEAREST(x, y) (((x) / (y)) * y) 87 #endif 88 89 90 #ifndef CUB_STATIC_ASSERT 91 #ifndef DOXYGEN_SHOULD_SKIP_THIS // Do not document 92 #define CUB_CAT_(a, b) a ## b 93 #define CUB_CAT(a, b) CUB_CAT_(a, b) 94 #endif // DOXYGEN_SHOULD_SKIP_THIS 95 96 /// Static assert 97 #define CUB_STATIC_ASSERT(cond, msg) typedef int CUB_CAT(cub_static_assert, __LINE__)[(cond) ? 1 : -1] 98 #endif 99 100 /** @} */ // end group UtilModule 101 102 } // CUB namespace 103 CUB_NS_POSTFIX // Optional outer namespace(s) 104