Merge pull request #1481 from opentensor/hotfix/no-negative-divs

divs are minimum zero

Author: sam0x17

pallets/subtensor/src/coinbase/run_coinbase.rs

@@ -331,9 +331,9 @@ impl<T: Config> Pallet<T> {
                 // Compute root prop.
                 let root_prop: I96F32 = root_alpha.checked_div(total_alpha).unwrap_or(zero);
                 // Compute root dividends
-                let root_divs: I96F32 = dividend.saturating_mul(root_prop);
+                let root_divs: I96F32 = dividend.saturating_mul(root_prop).max(zero);
                 // Compute alpha dividends
-                let alpha_divs: I96F32 = dividend.saturating_sub(root_divs);
+                let alpha_divs: I96F32 = dividend.saturating_sub(root_divs).max(zero);
                 // Record the alpha dividends.
                 alpha_dividends
                     .entry(hotkey.clone())

runtime/src/lib.rs

@@ -207,7 +207,7 @@ pub const VERSION: RuntimeVersion = RuntimeVersion {
     //   `spec_version`, and `authoring_version` are the same between Wasm and native.
     // This value is set to 100 to notify Polkadot-JS App (https://polkadot.js.org/apps) to use
     //   the compatible custom types.
-    spec_version: 257,
+    spec_version: 258,
     impl_version: 1,
     apis: RUNTIME_API_VERSIONS,
     transaction_version: 1,