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https://github.com/eledio-devices/thirdparty-littlefs.git
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b55719bab1
Adopted buffer followed by size. The other order was original chosen due to some other functions with a more complicated parameter list. This convention is important, as the bd api is one of the main apis facing porting efforts.
46 lines
975 B
C
46 lines
975 B
C
/*
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* lfs utility functions
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*
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* Copyright (c) 2017 Christopher Haster
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* Distributed under the MIT license
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*/
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#ifndef LFS_UTIL_H
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#define LFS_UTIL_H
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#include <stdlib.h>
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#include <stdint.h>
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#include <stdio.h>
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// Builtin functions
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static inline uint32_t lfs_max(uint32_t a, uint32_t b) {
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return (a > b) ? a : b;
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}
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static inline uint32_t lfs_min(uint32_t a, uint32_t b) {
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return (a < b) ? a : b;
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}
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static inline uint32_t lfs_ctz(uint32_t a) {
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return __builtin_ctz(a);
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}
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static inline uint32_t lfs_npw2(uint32_t a) {
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return 32 - __builtin_clz(a-1);
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}
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static inline int lfs_scmp(uint32_t a, uint32_t b) {
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return (int)(unsigned)(a - b);
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}
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uint32_t lfs_crc(uint32_t crc, const void *buffer, size_t size);
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// Logging functions
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#define LFS_DEBUG(fmt, ...) printf("lfs debug: " fmt "\n", __VA_ARGS__)
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#define LFS_WARN(fmt, ...) printf("lfs warn: " fmt "\n", __VA_ARGS__)
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#define LFS_ERROR(fmt, ...) printf("lfs error: " fmt "\n", __VA_ARGS__)
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#endif
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