diff --git a/src/lib.cairo b/src/lib.cairo
index 1164175..341e047 100644
--- a/src/lib.cairo
+++ b/src/lib.cairo
@@ -2,6 +2,7 @@ pub mod libraries {
     pub mod lockers;
     pub mod currency_delta;
     pub mod fee_policy;
+    pub mod tick;
 }
 
 pub mod utils {
diff --git a/src/libraries/lockers.cairo b/src/libraries/lockers.cairo
index 786dbc4..cad511a 100644
--- a/src/libraries/lockers.cairo
+++ b/src/libraries/lockers.cairo
@@ -20,14 +20,14 @@ mod Lockers {
             locker: ContractAddress,
             lock_caller: ContractAddress
         ) {
-            let mut length = self.length.read();
+            let length = self.length.read();
             self.lockers.write(length, locker);
             self.lock_callers.write(length, locker);
             self.length.write(length + 1);
         }
 
         fn pop(ref self: ComponentState<TContractState>) {
-            let mut length = self.length.read();
+            let length = self.length.read();
             assert(length > 0, 'LOCKER_POP_FAILED');
 
             // let locker = self.lockers.read(length);
@@ -71,12 +71,12 @@ mod Lockers {
         }
 
         fn increment_nonzero_delta_count(ref self: ComponentState<TContractState>) {
-            let mut non_zero_delta_count = self.non_zero_delta_count.read();
+            let non_zero_delta_count = self.non_zero_delta_count.read();
             self.non_zero_delta_count.write(non_zero_delta_count + 1);
         }
 
         fn decrement_nonzero_delta_count(ref self: ComponentState<TContractState>) {
-            let mut non_zero_delta_count = self.non_zero_delta_count.read();
+            let non_zero_delta_count = self.non_zero_delta_count.read();
             // assert(non_zero_delta_count > 0, 'NON_ZERO_DELTA_COUNT_DECREMENT_FAILED');
             self.non_zero_delta_count.write(non_zero_delta_count - 1);
         }
diff --git a/src/libraries/tick.cairo b/src/libraries/tick.cairo
new file mode 100644
index 0000000..094fe25
--- /dev/null
+++ b/src/libraries/tick.cairo
@@ -0,0 +1,108 @@
+use starknet::storage_access::{StorePacking};
+use clober_cairo::utils::math::{Math};
+
+const MAX_TICK: i32 = consteval_int!(2 ^ 19 - 1);
+const MIN_TICK: i32 = -MAX_TICK;
+
+const MIN_PRICE: u256 = 1350587;
+const MAX_PRICE: u256 = 4647684107270898330752324302845848816923571339324334;
+
+const R0: u256 = 0xfff97272373d413259a46990;
+const R1: u256 = 0xfff2e50f5f656932ef12357c;
+const R2: u256 = 0xffe5caca7e10e4e61c3624ea;
+const R3: u256 = 0xffcb9843d60f6159c9db5883;
+const R4: u256 = 0xff973b41fa98c081472e6896;
+const R5: u256 = 0xff2ea16466c96a3843ec78b3;
+const R6: u256 = 0xfe5dee046a99a2a811c461f1;
+const R7: u256 = 0xfcbe86c7900a88aedcffc83b;
+const R8: u256 = 0xf987a7253ac413176f2b074c;
+const R9: u256 = 0xf3392b0822b70005940c7a39;
+const R10: u256 = 0xe7159475a2c29b7443b29c7f;
+const R11: u256 = 0xd097f3bdfd2022b8845ad8f7;
+const R12: u256 = 0xa9f746462d870fdf8a65dc1f;
+const R13: u256 = 0x70d869a156d2a1b890bb3df6;
+const R14: u256 = 0x31be135f97d08fd981231505;
+const R15: u256 = 0x9aa508b5b7a84e1c677de54;
+const R16: u256 = 0x5d6af8dedb81196699c329;
+const R17: u256 = 0x2216e584f5fa1ea92604;
+const R18: u256 = 0x48a170391f7dc42;
+
+#[generate_trait]
+impl TickImpl of TickTrait {
+    fn to_price(tick: i32) -> u256 {
+        assert(tick < MIN_TICK || tick > MAX_TICK, 'invalid_tick');
+
+        let absTick: u32 = (if (tick < 0) {
+            -tick
+        } else {
+            tick
+        }).try_into().unwrap();
+
+        let mut price: u256 = if (absTick & 0x1 != 0) {
+            R0
+        } else {
+            consteval_int!(2 ^ 96)
+        };
+        if (absTick & 0x2 != 0) {
+            price = (price * R1) / consteval_int!(2 ^ 96);
+        }
+        if (absTick & 0x4 != 0) {
+            price = (price * R2) / consteval_int!(2 ^ 96);
+        }
+        if (absTick & 0x8 != 0) {
+            price = (price * R3) / consteval_int!(2 ^ 96);
+        }
+        if (absTick & 0x10 != 0) {
+            price = (price * R4) / consteval_int!(2 ^ 96);
+        }
+        if (absTick & 0x20 != 0) {
+            price = (price * R5) / consteval_int!(2 ^ 96);
+        }
+        if (absTick & 0x40 != 0) {
+            price = (price * R6) / consteval_int!(2 ^ 96);
+        }
+        if (absTick & 0x80 != 0) {
+            price = (price * R7) / consteval_int!(2 ^ 96);
+        }
+        if (absTick & 0x100 != 0) {
+            price = (price * R8) / consteval_int!(2 ^ 96);
+        }
+        if (absTick & 0x200 != 0) {
+            price = (price * R9) / consteval_int!(2 ^ 96);
+        }
+        if (absTick & 0x400 != 0) {
+            price = (price * R10) / consteval_int!(2 ^ 96);
+        }
+        if (absTick & 0x800 != 0) {
+            price = (price * R11) / consteval_int!(2 ^ 96);
+        }
+        if (absTick & 0x1000 != 0) {
+            price = (price * R12) / consteval_int!(2 ^ 96);
+        }
+        if (absTick & 0x2000 != 0) {
+            price = (price * R13) / consteval_int!(2 ^ 96);
+        }
+        if (absTick & 0x4000 != 0) {
+            price = (price * R14) / consteval_int!(2 ^ 96);
+        }
+        if (absTick & 0x8000 != 0) {
+            price = (price * R15) / consteval_int!(2 ^ 96);
+        }
+        if (absTick & 0x10000 != 0) {
+            price = (price * R16) / consteval_int!(2 ^ 96);
+        }
+        if (absTick & 0x20000 != 0) {
+            price = (price * R17) / consteval_int!(2 ^ 96);
+        }
+        if (absTick & 0x40000 != 0) {
+            price = (price * R18) / consteval_int!(2 ^ 96);
+        }
+
+        price
+    }
+// fn from_price(price: u256) -> i32 {
+//     int24 tick = int24((int256(price).lnWad() * 42951820407860) / 2 ** 128);
+//     if (toPrice(Tick.wrap(tick)) > price) return Tick.wrap(tick - 1);
+//     return Tick.wrap(tick);
+// }
+}