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core/vm: fix typos and use ExpGas for EXP (#18400)

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This replaces the GasSlowStep constant with params.ExpGas.
Both constants have value 10.
This commit is contained in:
Nalin Bhardwaj 2019-01-24 16:44:02 +05:30 committed by Felix Lange
parent fa34429a26
commit b8f9b3779f
2 changed files with 3 additions and 3 deletions
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4
core/vm/gas_table.go
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@ -22,7 +22,7 @@ import (
"github.com/ethereum/go-ethereum/params"
)
// memoryGasCosts calculates the quadratic gas for memory expansion. It does so
// memoryGasCost calculates the quadratic gas for memory expansion. It does so
// only for the memory region that is expanded, not the total memory.
func memoryGasCost(mem *Memory, newMemSize uint64) (uint64, error) {
@ -382,7 +382,7 @@ func gasExp(gt params.GasTable, evm *EVM, contract *Contract, stack *Stack, mem
gas = expByteLen * gt.ExpByte // no overflow check required. Max is 256 * ExpByte gas
overflow bool
)
if gas, overflow = math.SafeAdd(gas, GasSlowStep); overflow {
if gas, overflow = math.SafeAdd(gas, params.ExpGas); overflow {
return 0, errGasUintOverflow
}
return gas, nil

2
params/protocol_params.go
View File

@ -52,7 +52,7 @@ const (
NetSstoreResetRefund uint64 = 4800 // Once per SSTORE operation for resetting to the original non-zero value
NetSstoreResetClearRefund uint64 = 19800 // Once per SSTORE operation for resetting to the original zero value
JumpdestGas uint64 = 1 // Refunded gas, once per SSTORE operation if the zeroness changes to zero.
JumpdestGas uint64 = 1 // Once per JUMPDEST operation.
EpochDuration uint64 = 30000 // Duration between proof-of-work epochs.
CallGas uint64 = 40 // Once per CALL operation & message call transaction.
CreateDataGas uint64 = 200 //