stake split (#6402)

* stake split

* stake split

sdk/src/clock.rs

@@ -72,6 +72,15 @@ pub type Segment = u64;
 ///  some number of Slots.
 pub type Epoch = u64;
 
+#[repr(C)]
+#[derive(Serialize, Deserialize, Debug, Default, PartialEq)]
+pub struct Clock {
+    pub slot: Slot,
+    pub segment: Segment,
+    pub epoch: Epoch,
+    pub stakers_epoch: Epoch,
+}
+
 #[cfg(test)]
 mod tests {
     use super::*;

sdk/src/sysvar/clock.rs

@@ -1,10 +1,13 @@
 //! This account contains the clock slot, epoch, and stakers_epoch
 //!
+pub use crate::clock::Clock;
 
-use crate::account::Account;
-use crate::account_info::AccountInfo;
-use crate::clock::{Epoch, Segment, Slot};
-use crate::sysvar;
+use crate::{
+    account::Account,
+    account_info::AccountInfo,
+    clock::{Epoch, Segment, Slot},
+    sysvar,
+};
 use bincode::serialized_size;
 
 const ID: [u8; 32] = [
@@ -14,15 +17,6 @@ const ID: [u8; 32] = [
 
 crate::solana_sysvar_id!(ID, "SysvarC1ock11111111111111111111111111111111");
 
-#[repr(C)]
-#[derive(Serialize, Deserialize, Debug, Default, PartialEq)]
-pub struct Clock {
-    pub slot: Slot,
-    pub segment: Segment,
-    pub epoch: Epoch,
-    pub stakers_epoch: Epoch,
-}
-
 impl Clock {
     pub fn size_of() -> usize {
         serialized_size(&Self::default()).unwrap() as usize