kube-audit-mcp

// Copyright 2019+ Klaus Post. All rights reserved. // License information can be found in the LICENSE file. // Based on work by Yann Collet, released under BSD License. package zstd const ( prime3bytes = 506832829 prime4bytes = 2654435761 prime5bytes = 889523592379 prime6bytes = 227718039650203 prime7bytes = 58295818150454627 prime8bytes = 0xcf1bbcdcb7a56463 ) // hashLen returns a hash of the lowest mls bytes of with length output bits. // mls must be >=3 and <=8. Any other value will return hash for 4 bytes. // length should always be < 32. // Preferably length and mls should be a constant for inlining. func hashLen(u uint64, length, mls uint8) uint32 { switch mls { case 3: return (uint32(u<<8) * prime3bytes) >> (32 - length) case 5: return uint32(((u << (64 - 40)) * prime5bytes) >> (64 - length)) case 6: return uint32(((u << (64 - 48)) * prime6bytes) >> (64 - length)) case 7: return uint32(((u << (64 - 56)) * prime7bytes) >> (64 - length)) case 8: return uint32((u * prime8bytes) >> (64 - length)) default: return (uint32(u) * prime4bytes) >> (32 - length) } }