This repository is deprecated and no longer maintained. A comprehensive elliptic curve implementation for OCaml is the mirage-crypto-ec package (using fiat, please use that instead.
If interested in hacl-star, use the official OCaml bindings.
These are bindings to the various primitives present in Project Everest.
In particular, the C code comes from this snapshot (from the hacl-star-raw 0.2.1 opam package, execute ./build_local.sh). Hacl_Hash.{c,h} have been stripped down to only SHA-512.