f slightly more explicit var names

Author: TheBlueMatt

lightning/src/routing/scoring.rs

@@ -824,25 +824,25 @@ impl<L: Deref<Target = u64>, BRT: Deref<Target = HistoricalBucketRangeTracker>,
 			debug_assert!(payment_amt_64th_bucket <= 64);
 			if payment_amt_64th_bucket > 64 { return res; }
 
-			let mut cumulative_success_prob_billions = 0;
+			let mut cumulative_success_prob_times_billion = 0;
 			for (min_idx, min_bucket) in self.min_liquidity_offset_history.buckets.iter().enumerate() {
 				for (max_idx, max_bucket) in self.max_liquidity_offset_history.buckets.iter().enumerate().take(8 - min_idx) {
-					let bucket_prob_millions = (*min_bucket as u64) * (*max_bucket as u64)
+					let bucket_prob_times_million = (*min_bucket as u64) * (*max_bucket as u64)
 						* 1024 * 1024 / total_valid_points_tracked;
 					let min_64th_bucket = min_idx as u64 * 9;
 					let max_64th_bucket = (7 - max_idx as u64) * 9 + 1;
 					if payment_amt_64th_bucket > max_64th_bucket {
 						// Success probability 0, the payment amount is above the max liquidity
 					} else if payment_amt_64th_bucket <= min_64th_bucket {
-						cumulative_success_prob_billions += bucket_prob_millions * 1024;
+						cumulative_success_prob_times_billion += bucket_prob_times_million * 1024;
 					} else {
-						cumulative_success_prob_billions += bucket_prob_millions *
+						cumulative_success_prob_times_billion += bucket_prob_times_million *
 							(max_64th_bucket - payment_amt_64th_bucket) * 1024 /
 							(max_64th_bucket - min_64th_bucket);
 					}
 				}
 			}
-			let historical_negative_log10_times_2048 = approx::negative_log10_times_2048(cumulative_success_prob_billions + 1, 1024 * 1024 * 1024);
+			let historical_negative_log10_times_2048 = approx::negative_log10_times_2048(cumulative_success_prob_times_billion + 1, 1024 * 1024 * 1024);
 			res = res.saturating_add(Self::combined_penalty_msat(amount_msat,
 				historical_negative_log10_times_2048, params.historical_liquidity_penalty_multiplier_msat,
 				params.historical_liquidity_penalty_amount_multiplier_msat));