Function pqcrypto::sign::ffi::PQCLEAN_SPHINCSSHA256256FROBUST_CLEAN_crypto_sign_verify

pub unsafe extern "C" fn PQCLEAN_SPHINCSSHA256256FROBUST_CLEAN_crypto_sign_verify(
    sig: *const u8, 
    siglen: usize, 
    m: *const u8, 
    mlen: usize, 
    pk: *const u8
) -> i32