neon-compat.h (1482B)
1 /* 2 * Copyright (C) 2020, D. R. Commander. All Rights Reserved. 3 * Copyright (C) 2020-2021, Arm Limited. All Rights Reserved. 4 * 5 * This software is provided 'as-is', without any express or implied 6 * warranty. In no event will the authors be held liable for any damages 7 * arising from the use of this software. 8 * 9 * Permission is granted to anyone to use this software for any purpose, 10 * including commercial applications, and to alter it and redistribute it 11 * freely, subject to the following restrictions: 12 * 13 * 1. The origin of this software must not be misrepresented; you must not 14 * claim that you wrote the original software. If you use this software 15 * in a product, an acknowledgment in the product documentation would be 16 * appreciated but is not required. 17 * 2. Altered source versions must be plainly marked as such, and must not be 18 * misrepresented as being the original software. 19 * 3. This notice may not be removed or altered from any source distribution. 20 */ 21 22 /* Define compiler-independent count-leading-zeros and byte-swap macros */ 23 #if defined(_MSC_VER) && !defined(__clang__) 24 #define BUILTIN_CLZ(x) _CountLeadingZeros(x) 25 #define BUILTIN_CLZLL(x) _CountLeadingZeros64(x) 26 #define BUILTIN_BSWAP64(x) _byteswap_uint64(x) 27 #elif defined(__clang__) || defined(__GNUC__) 28 #define BUILTIN_CLZ(x) __builtin_clz(x) 29 #define BUILTIN_CLZLL(x) __builtin_clzll(x) 30 #define BUILTIN_BSWAP64(x) __builtin_bswap64(x) 31 #else 32 #error "Unknown compiler" 33 #endif