Merge pull request #15466 from karalabe/uint64-gas-limit

all: switch gas limits from big.Int to uint64

1 files changed, 12 insertions, 8 deletions

diff --git a/params/protocol_params.go b/params/protocol_params.go
index c56faf56f..5a0b14d61 100644
--- a/params/protocol_params.go
+++ b/params/protocol_params.go
@@ -18,7 +18,15 @@ package params
 
 import "math/big"
 
+var (
+	TargetGasLimit uint64 = GenesisGasLimit // The artificial target
+)
+
 const (
+	GasLimitBoundDivisor uint64 = 1024    // The bound divisor of the gas limit, used in update calculations.
+	MinGasLimit          uint64 = 5000    // Minimum the gas limit may ever be.
+	GenesisGasLimit      uint64 = 4712388 // Gas limit of the Genesis block.
+
 	MaximumExtraDataSize  uint64 = 32    // Maximum size extra data may be after Genesis.
 	ExpByteGas            uint64 = 10    // Times ceil(log256(exponent)) for the EXP instruction.
 	SloadGas              uint64 = 50    // Multiplied by the number of 32-byte words that are copied (round up) for any *COPY operation and added.
@@ -72,12 +80,8 @@ const (
 )
 
 var (
-	GasLimitBoundDivisor   = big.NewInt(1024)                  // The bound divisor of the gas limit, used in update calculations.
-	MinGasLimit            = big.NewInt(5000)                  // Minimum the gas limit may ever be.
-	GenesisGasLimit        = big.NewInt(4712388)               // Gas limit of the Genesis block.
-	TargetGasLimit         = new(big.Int).Set(GenesisGasLimit) // The artificial target
-	DifficultyBoundDivisor = big.NewInt(2048)                  // The bound divisor of the difficulty, used in the update calculations.
-	GenesisDifficulty      = big.NewInt(131072)                // Difficulty of the Genesis block.
-	MinimumDifficulty      = big.NewInt(131072)                // The minimum that the difficulty may ever be.
-	DurationLimit          = big.NewInt(13)                    // The decision boundary on the blocktime duration used to determine whether difficulty should go up or not.
+	DifficultyBoundDivisor = big.NewInt(2048)   // The bound divisor of the difficulty, used in the update calculations.
+	GenesisDifficulty      = big.NewInt(131072) // Difficulty of the Genesis block.
+	MinimumDifficulty      = big.NewInt(131072) // The minimum that the difficulty may ever be.
+	DurationLimit          = big.NewInt(13)     // The decision boundary on the blocktime duration used to determine whether difficulty should go up or not.
 )