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Diffstat (limited to 'dev/libSystem/src/Utils.cc')
| -rw-r--r-- | dev/libSystem/src/Utils.cc | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/dev/libSystem/src/Utils.cc b/dev/libSystem/src/Utils.cc new file mode 100644 index 00000000..cf4f41e7 --- /dev/null +++ b/dev/libSystem/src/Utils.cc @@ -0,0 +1,29 @@ +/* ------------------------------------------- + + Copyright (C) 2025, Amlal El Mahrouss, licensed under the Apache 2.0 license. + +------------------------------------------- */ + +#include <libSystem/SystemKit/Err.h> +#include <libSystem/SystemKit/Syscall.h> +#include <libSystem/SystemKit/System.h> +#include <libSystem/SystemKit/Verify.h> + +using namespace LibSystem; + +/// @note This uses the FNV 64-bit variant. +IMPORT_C UInt64 libsys_hash_64(const Char* path) { + if (!path || *path == 0) return 0; + + const UInt64 kFNVSeed = 0xcbf29ce484222325ULL; + const UInt64 kFNVPrime = 0x100000001b3ULL; + + UInt64 hash = kFNVSeed; + + while (*path) { + hash ^= (Char) (*path++); + hash *= kFNVPrime; + } + + return hash; +} |
