sha224_init
ATTRIBUTE_WARN_UNUSED_RET int sha224_init(sha224_context *ctx);
return sha224_init((sha224_context*)hctx);
ret = sha224_init(&ctx); EG(ret, err);
ret = sha224_init(&ctx); EG(ret, err);
LEGACY_EVP_MD_METH_TABLE(sha224_init, sha224_update, sha224_final, NULL,