Function EVP_DigestVerifyInit_ex

pub unsafe extern "C" fn EVP_DigestVerifyInit_ex(
    ctx: *mut evp_md_ctx_st,
    pctx: *mut *mut evp_pkey_ctx_st,
    mdname: *const i8,
    libctx: *mut ossl_lib_ctx_st,
    props: *const i8,
    pkey: *mut evp_pkey_st,
    params: *const ossl_param_st,
) -> i32