Tim Ruffing b8f8b99f0f docs: Fix return value for functions that don't have invalid inputs
_tagged_sha256 simply cannot have invalid inputs.

The other functions could in some sense have invalid inputs but only in
violation of the type system. For example, a pubkey could be invalid but
invalid objects of type secp256k1_pubkey either can't be obtained
via the API or will be caught by an ARG_CHECK when calling pubkey_load.

This is consistent with similar functions in the public API, e.g.,
_ec_pubkey_negate or _ec_pubkey_serialize.
2022-03-18 11:33:23 +01:00
..