v/vlib/hash/fnv1a/fnv1a.v

45 lines
821 B
V

module fnv1a
const (
fnv64_prime = 1099511628211
fnv64_offset_basis = 14695981039346656037
fnv32_offset_basis = u32(2166136261)
fnv32_prime = u32(16777619)
)
[inline]
pub fn sum32_string(data string) u32 {
mut hash := fnv32_offset_basis
for i in 0..data.len {
hash = (hash ^ u32(data[i])) * fnv32_prime
}
return hash
}
[inline]
pub fn sum32(data []byte) u32 {
mut hash := fnv32_offset_basis
for i in 0..data.len {
hash = (hash ^ u32(data[i])) * fnv32_prime
}
return hash
}
[inline]
pub fn sum64_string(data string) u64 {
mut hash := fnv64_offset_basis
for i in 0..data.len {
hash = (hash ^ u64(data[i])) * fnv64_prime
}
return hash
}
[inline]
pub fn sum64(data []byte) u64 {
mut hash := fnv64_offset_basis
for i in 0..data.len {
hash = (hash ^ u64(data[i])) * fnv64_prime
}
return hash
}