f2568() is a variable length tabulation hashing function which returns a 64 bit hash result of input data up to a size of 256 bytes. It’s quite fast (basically requiring as many XOR operations as the data length in bytes), easy to understand and very strong at the same time.
CHRing is a consistent hash ring implementation based on a skiplist and f448(), a tabulation hashing function for this purpose. This post provides an overview of the CHRing testing API and the related RPCL control words.
f448() is another tabulation hashing function which maps two uint32_t to an uniform hash result of type uint64_t. This is useful to implement a skiplist based consistent hash ring with 2^64 possible ring slots (or positions).
RPCL is a minimalistic configuration and control language, initially designed to act as a CLI for daemon-like background processes. RPCL is an acronym for Reverse Polish Configuration (and Control) Language.
f82() is hash function which hashes a unt64_t 8 byte unsigned integer key to a uint16_t 2 byte hash value. It belongs to the class of tabulation hashing functions and is perfect for implementing lock-less hash tables and other data structures that require an uniform and perfect distribution.
When uniform random numbers are needed in C, just applying modulo is not enough. With using random() for portability and a few calculations this can be easily fixed.
C23, formally ISO/IEC 9899:2024, is the current open standard for the C programming language, which supersedes C17 (standard ISO/IEC 9899:2018).