diff options
Diffstat (limited to 'v_windows/v/old/vlib/hash/fnv1a/fnv1a.v')
-rw-r--r-- | v_windows/v/old/vlib/hash/fnv1a/fnv1a.v | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/v_windows/v/old/vlib/hash/fnv1a/fnv1a.v b/v_windows/v/old/vlib/hash/fnv1a/fnv1a.v new file mode 100644 index 0000000..275c8a2 --- /dev/null +++ b/v_windows/v/old/vlib/hash/fnv1a/fnv1a.v @@ -0,0 +1,44 @@ +module fnv1a + +const ( + fnv64_prime = u64(1099511628211) + fnv64_offset_basis = u64(14695981039346656037) + fnv32_offset_basis = u32(2166136261) + fnv32_prime = u32(16777619) +) + +[inline] +pub fn sum32_string(data string) u32 { + mut hash := fnv1a.fnv32_offset_basis + for i in 0 .. data.len { + hash = (hash ^ u32(data[i])) * fnv1a.fnv32_prime + } + return hash +} + +[inline] +pub fn sum32(data []byte) u32 { + mut hash := fnv1a.fnv32_offset_basis + for i in 0 .. data.len { + hash = (hash ^ u32(data[i])) * fnv1a.fnv32_prime + } + return hash +} + +[inline] +pub fn sum64_string(data string) u64 { + mut hash := fnv1a.fnv64_offset_basis + for i in 0 .. data.len { + hash = (hash ^ u64(data[i])) * fnv1a.fnv64_prime + } + return hash +} + +[inline] +pub fn sum64(data []byte) u64 { + mut hash := fnv1a.fnv64_offset_basis + for i in 0 .. data.len { + hash = (hash ^ u64(data[i])) * fnv1a.fnv64_prime + } + return hash +} |