flipperzero-firmware/lib/fnv1a-hash/fnv1a-hash.h

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#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