Merge pull request #24 from blockydevs/max-fees-calculation-fixes

Fix compute budget max fees calculation - convert microlamports to lamports
blockydevs · Sep 17, 2024 · 2aa3da3 · 2aa3da3
2 parents c3306fa + be50479
commit 2aa3da3
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diff --git a/libsol/compute_budget_instruction.c b/libsol/compute_budget_instruction.c
@@ -57,7 +57,8 @@ static uint32_t calculate_max_fee(const ComputeBudgetFeeInfo* info) {
             max_compute =
                 MIN(info->instructions_count * MAX_CU_PER_INSTRUCTION, MAX_CU_PER_TRANSACTION);
         }
-        return max_fee + (info->change_unit_price->units * max_compute);
+        return max_fee +
+               ((info->change_unit_price->units * max_compute) / MICRO_LAMPORT_MULTIPLIER);
     }
     return max_fee;
 }

diff --git a/libsol/compute_budget_instruction.h b/libsol/compute_budget_instruction.h
@@ -9,6 +9,7 @@
 #define MAX_CU_PER_INSTRUCTION     200000
 #define MAX_CU_PER_TRANSACTION     1400000
 #define FEE_LAMPORTS_PER_SIGNATURE 5000
+#define MICRO_LAMPORT_MULTIPLIER   1000000
 
 extern const Pubkey compute_budget_program_id;