diff options
Diffstat (limited to 'hicn-light/src/hicn/base/common.h')
-rw-r--r-- | hicn-light/src/hicn/base/common.h | 62 |
1 files changed, 0 insertions, 62 deletions
diff --git a/hicn-light/src/hicn/base/common.h b/hicn-light/src/hicn/base/common.h deleted file mode 100644 index 9f7e3beec..000000000 --- a/hicn-light/src/hicn/base/common.h +++ /dev/null @@ -1,62 +0,0 @@ -/* - * Copyright (c) 2021 Cisco and/or its affiliates. - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at: - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -/** - * \file array.h - * \brief Fixed-size pool allocator - */ - -#ifndef UTIL_COMMON_H -#define UTIL_COMMON_H - -#define round_pow2(x, pow2) ((x + pow2 - 1) & ~(pow2 - 1)) - -#define _SIZEOF_ALIGNED(x, size) round_pow2(sizeof(x), size) -#define SIZEOF_ALIGNED(x) _SIZEOF_ALIGNED(x, sizeof(void*)) - -/* Definitions for builtins unavailable on MSVC */ -#if defined(_MSC_VER) && !defined(__clang__) -#include <intrin.h> - -uint32_t __inline __builtin_ctz(uint32_t value) { - uint32_t trailing_zero = 0; - if (_BitScanForward(&trailing_zero, value)) - return trailing_zero; - else - return 32; -} - -uint32_t __inline __builtin_clz(uint32_t value) { - uint32_t leading_zero = 0; - if (_BitScanReverse(&leading_zero, value)) - return 31 - leading_zero; - else - return 32; -} - -uint32_t __inline __builtin_clzl2(uint64_t value) { - uint32_t leading_zero = 0; - if (_BitScanReverse64(&leading_zero, value)) - return 63 - leading_zero; - else - return 64; -} - -#define __builtin_clzl __builtin_clzll -#endif - -#define next_pow2(x) (x <= 1 ? 1 : 1ul << (64 - __builtin_clzl(x - 1))) - -#endif /* UTIL_COMMON_H */ |