unleashed-firmware/lib/fnv1a-hash/fnv1a-hash.h
hedger 4d6b170769
[FL-2520] FW build with -Wextra (#1185)
* Fixing compiler warnings with -Wextra
* More warnings suppression, WIP
* Even more warning fixes
* Added new lines at end of text files.
* Padding fix
* Additional fixes to warnings on different build configurations; added -Wextra to default build pipeline
* Fixes for Secplus v1
* -additional warnings
* +-Wredundant-decls fixes
* FuriHal: print stack overflow task name in console
* FuriHal: add missing include

Co-authored-by: Aleksandr Kutuzov <alleteam@gmail.com>
2022-05-06 16:37:10 +03:00

40 lines
750 B
C

#pragma once
#include <stdint.h>
#ifdef __cplusplus
extern "C" {
#endif
#define FNV_1A_INIT 2166136261UL
// FNV-1a hash, 32-bit
uint32_t fnv1a_buffer_hash(const uint8_t* buffer, uint32_t length, uint32_t hash);
#ifdef __cplusplus
}
#endif
#ifdef __cplusplus
// constexpr FNV-1a hash for strings, 32-bit
inline constexpr uint32_t fnv1a_string_hash(const char* str) {
uint32_t hash = FNV_1A_INIT;
while(*str) {
hash = (hash ^ *str) * 16777619ULL;
str += 1;
}
return hash;
}
#else
// FNV-1a hash for strings, 32-bit
inline uint32_t fnv1a_string_hash(const char* str) {
uint32_t hash = FNV_1A_INIT;
while(*str) {
hash = (hash ^ *str) * 16777619ULL;
str += 1;
}
return hash;
}
#endif