Fix std_rand feature

Author: Mec-iS

src/rand_custom.rs

@@ -1,19 +1,20 @@
-#[cfg(not(feature = "std"))]
-pub(crate) use rand::rngs::SmallRng as RngImpl;
-#[cfg(feature = "std")]
-pub(crate) use rand::rngs::StdRng as RngImpl;
+#[cfg(not(feature = "std_rand"))]
+pub use rand::rngs::SmallRng as RngImpl;
+#[cfg(feature = "std_rand")]
+pub use rand::rngs::StdRng as RngImpl;
 use rand::SeedableRng;
 
-pub(crate) fn get_rng_impl(seed: Option<u64>) -> RngImpl {
+/// Custom switch for random fuctions
+pub fn get_rng_impl(seed: Option<u64>) -> RngImpl {
     match seed {
         Some(seed) => RngImpl::seed_from_u64(seed),
         None => {
             cfg_if::cfg_if! {
-                if #[cfg(feature = "std")] {
+                if #[cfg(feature = "std_rand")] {
                     use rand::RngCore;
                     RngImpl::seed_from_u64(rand::thread_rng().next_u64())
                 } else {
-                    // non-std build, use getrandom
+                    // no std_random feature build, use getrandom
                     let mut buf = [0u8; 64];
                     getrandom::getrandom(&mut buf).unwrap();
                     RngImpl::seed_from_u64(buf[0] as u64)