> ## Documentation Index > Fetch the complete documentation index at: https://voltaire.tevm.sh/llms.txt > Use this file to discover all available pages before exploring further. > Auto-generated TypeScript API documentation from source code # Generated API Reference [**@tevm/voltaire**](../../index.mdx) *** [@tevm/voltaire](../../index.mdx) / primitives/GasConstants # primitives/GasConstants ## Namespaces * [Precompile](namespaces/Precompile.mdx) ## Type Aliases ### CallDetails > **CallDetails** = `object` Defined in: [src/primitives/GasConstants/types.ts:44](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/types.ts#L44) Call operation details #### Properties ##### gas > **gas**: `bigint` Defined in: [src/primitives/GasConstants/types.ts:48](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/types.ts#L48) ##### hasValue > **hasValue**: `boolean` Defined in: [src/primitives/GasConstants/types.ts:46](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/types.ts#L46) ##### isNewAccount > **isNewAccount**: `boolean` Defined in: [src/primitives/GasConstants/types.ts:47](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/types.ts#L47) ##### isWarm > **isWarm**: `boolean` Defined in: [src/primitives/GasConstants/types.ts:45](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/types.ts#L45) *** ### Config > **Config** = `object` Defined in: [src/primitives/GasConstants/types.ts:18](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/types.ts#L18) Gas configuration for hardfork-specific calculations #### Properties ##### hardfork > **hardfork**: [`Hardfork`](#hardfork-1) Defined in: [src/primitives/GasConstants/types.ts:19](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/types.ts#L19) *** ### CostResult > **CostResult** = `object` Defined in: [src/primitives/GasConstants/types.ts:25](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/types.ts#L25) Gas cost calculation result #### Properties ##### base > **base**: `bigint` Defined in: [src/primitives/GasConstants/types.ts:26](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/types.ts#L26) ##### dynamic > **dynamic**: `bigint` Defined in: [src/primitives/GasConstants/types.ts:27](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/types.ts#L27) ##### total > **total**: `bigint` Defined in: [src/primitives/GasConstants/types.ts:28](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/types.ts#L28) *** ### Hardfork > **Hardfork** = `"homestead"` | `"byzantium"` | `"constantinople"` | `"istanbul"` | `"berlin"` | `"london"` | `"paris"` | `"shanghai"` | `"cancun"` Defined in: [src/primitives/GasConstants/types.ts:4](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/types.ts#L4) Ethereum hardfork identifiers *** ### MemoryExpansion > **MemoryExpansion** = `object` Defined in: [src/primitives/GasConstants/types.ts:34](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/types.ts#L34) Memory expansion details #### Properties ##### expansionCost > **expansionCost**: `bigint` Defined in: [src/primitives/GasConstants/types.ts:37](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/types.ts#L37) ##### newCost > **newCost**: `bigint` Defined in: [src/primitives/GasConstants/types.ts:36](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/types.ts#L36) ##### oldCost > **oldCost**: `bigint` Defined in: [src/primitives/GasConstants/types.ts:35](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/types.ts#L35) ##### words > **words**: `bigint` Defined in: [src/primitives/GasConstants/types.ts:38](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/types.ts#L38) ## Variables ### BlobBaseFee > `const` **BlobBaseFee**: `2n` = `2n` Defined in: [src/primitives/GasConstants/constants.js:325](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/constants.js#L325) BLOBBASEFEE opcode cost (2 gas) *** ### BlobHash > `const` **BlobHash**: `3n` = `3n` Defined in: [src/primitives/GasConstants/constants.js:319](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/constants.js#L319) BLOBHASH opcode cost (3 gas) *** ### BrandedGasConstants > `const` **BrandedGasConstants**: `object` Defined in: [src/primitives/GasConstants/index.ts:74](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/index.ts#L74) #### Type Declaration ##### calculateCallCost() > **calculateCallCost**: (`isWarm`, `hasValue`, `isNewAccount`, `availableGas`) => `object` Calculate CALL operation gas cost ###### Parameters ###### isWarm `boolean` Whether target account is warm ###### hasValue `boolean` Whether call transfers value ###### isNewAccount `boolean` Whether target account doesn't exist ###### availableGas `bigint` Gas available for the call ###### Returns `object` Gas cost breakdown ###### base > **base**: `bigint` ###### dynamic > **dynamic**: `bigint` ###### forwarded > **forwarded**: `bigint` ###### stipend > **stipend**: `bigint` ###### total > **total**: `bigint` ###### Example ```typescript theme={null} const result = calculateCallCost(true, true, false, 100000n); // { base, dynamic, stipend, forwarded, total } ``` ##### calculateCopyCost() > **calculateCopyCost**: (`size`) => `bigint` Calculate copy operation gas cost ###### Parameters ###### size `bigint` Size of data to copy in bytes ###### Returns `bigint` Gas cost ##### calculateCreateCost() > **calculateCreateCost**: (`initcodeSize`, `deployedSize`) => `object` Calculate contract creation gas cost ###### Parameters ###### initcodeSize `bigint` Size of initcode in bytes ###### deployedSize `bigint` Size of deployed bytecode in bytes ###### Returns `object` Gas cost breakdown ###### base > **base**: `bigint` ###### dynamic > **dynamic**: `bigint` ###### total > **total**: `bigint` ###### Throws If initcode size exceeds maximum ###### Example ```typescript theme={null} const result = calculateCreateCost(1000n, 500n); // { base: 32000n, initcode: ..., deployed: ..., total: ... } ``` ##### calculateKeccak256Cost() > **calculateKeccak256Cost**: (`dataSize`) => `bigint` Calculate KECCAK256 gas cost ###### Parameters ###### dataSize `bigint` Size of data in bytes ###### Returns `bigint` Total gas cost ###### Example ```typescript theme={null} const cost = calculateKeccak256Cost(64n); // 30 + (2 * 6) = 42 gas ``` ##### calculateLogCost() > **calculateLogCost**: (`topicCount`, `dataSize`) => `bigint` Calculate LOG gas cost ###### Parameters ###### topicCount `bigint` Number of topics (0-4) ###### dataSize `bigint` Size of log data in bytes ###### Returns `bigint` Total gas cost ###### Example ```typescript theme={null} const cost = calculateLogCost(2n, 64n); // LOG2 with 64 bytes // 375 + (2 * 375) + (64 * 8) = 1637 gas ``` ##### calculateMaxRefund() > **calculateMaxRefund**: (`gasUsed`) => `bigint` Calculate maximum gas refund ###### Parameters ###### gasUsed `bigint` Total gas used in transaction ###### Returns `bigint` Maximum refundable gas ##### calculateMemoryExpansionCost() > **calculateMemoryExpansionCost**: (`oldSize`, `newSize`) => `object` Calculate memory expansion cost ###### Parameters ###### oldSize `bigint` Previous memory size in bytes ###### newSize `bigint` New memory size in bytes ###### Returns `object` Memory expansion cost ###### expansionCost > **expansionCost**: `bigint` ###### newCost > **newCost**: `bigint` ###### oldCost > **oldCost**: `bigint` ###### words > **words**: `bigint` ###### Example ```typescript theme={null} const expansion = calculateMemoryExpansionCost(64n, 128n); // { oldCost, newCost, expansionCost, words } ``` ##### calculateSstoreCost() > **calculateSstoreCost**: (`isWarm`, `currentValue`, `newValue`) => `object` Calculate SSTORE gas cost ###### Parameters ###### isWarm `boolean` Whether slot is warm (previously accessed) ###### currentValue `bigint` Current storage value (0n if empty) ###### newValue `bigint` New storage value ###### Returns `object` Gas cost and potential refund ###### cost > **cost**: `bigint` ###### refund > **refund**: `bigint` ###### Example ```typescript theme={null} const result = calculateSstoreCost(false, 0n, 100n); // { cost: 22100n, refund: 0n } - cold + set ``` ##### calculateTxIntrinsicGas() > **calculateTxIntrinsicGas**: (`data`, `isCreate`) => `bigint` Calculate transaction intrinsic gas cost ###### Parameters ###### data `Uint8Array`\<`ArrayBufferLike`> Transaction calldata ###### isCreate `boolean` Whether transaction creates a contract ###### Returns `bigint` Intrinsic gas cost ###### Example ```typescript theme={null} const data = new Uint8Array([0, 1, 2, 0, 0]); const cost = calculateTxIntrinsicGas(data, false); // 21000 + (3 * 4) + (2 * 16) = 21044 gas ``` ##### callCost() > **callCost**: (`this`) => `object` Calculate CALL operation gas cost (convenience form with this:) ###### Parameters ###### this ###### availableGas `bigint` ###### hasValue `boolean` ###### isNewAccount `boolean` ###### isWarm `boolean` ###### Returns `object` ###### base > **base**: `bigint` ###### dynamic > **dynamic**: `bigint` ###### forwarded > **forwarded**: `bigint` ###### stipend > **stipend**: `bigint` ###### total > **total**: `bigint` ##### copyCost() > **copyCost**: (`this`) => `bigint` Calculate copy operation gas cost (convenience form with this:) ###### Parameters ###### this `bigint` ###### Returns `bigint` ##### createCost() > **createCost**: (`this`) => `object` Calculate contract creation gas cost (convenience form with this:) ###### Parameters ###### this ###### deployedSize `bigint` ###### initcodeSize `bigint` ###### Returns `object` ###### base > **base**: `bigint` ###### dynamic > **dynamic**: `bigint` ###### total > **total**: `bigint` ##### getColdAccountAccessCost() > **getColdAccountAccessCost**: (`hardfork`) => `bigint` Get cold account access cost for hardfork ###### Parameters ###### hardfork [`Hardfork`](#hardfork-1) EVM hardfork ###### Returns `bigint` Gas cost ##### getColdSloadCost() > **getColdSloadCost**: (`hardfork`) => `bigint` Get cold storage cost for hardfork ###### Parameters ###### hardfork [`Hardfork`](#hardfork-1) EVM hardfork ###### Returns `bigint` Gas cost ##### getSelfdestructRefund() > **getSelfdestructRefund**: (`hardfork`) => `bigint` Get selfdestruct refund for hardfork ###### Parameters ###### hardfork [`Hardfork`](#hardfork-1) EVM hardfork ###### Returns `bigint` Gas refund amount ##### getSstoreRefund() > **getSstoreRefund**: (`hardfork`) => `bigint` Get storage refund for hardfork ###### Parameters ###### hardfork [`Hardfork`](#hardfork-1) EVM hardfork ###### Returns `bigint` Gas refund amount ##### hasEIP1153() > **hasEIP1153**: (`hardfork`) => `boolean` Check if a hardfork includes EIP-1153 (transient storage) ###### Parameters ###### hardfork [`Hardfork`](#hardfork-1) EVM hardfork ###### Returns `boolean` Whether hardfork includes EIP-1153 ##### hasEIP2929() > **hasEIP2929**: (`hardfork`) => `boolean` Check if a hardfork includes EIP-2929 (cold/warm access costs) ###### Parameters ###### hardfork [`Hardfork`](#hardfork-1) EVM hardfork ###### Returns `boolean` Whether hardfork includes EIP-2929 ##### hasEIP3529() > **hasEIP3529**: (`hardfork`) => `boolean` Check if a hardfork includes EIP-3529 (reduced refunds) ###### Parameters ###### hardfork [`Hardfork`](#hardfork-1) EVM hardfork ###### Returns `boolean` Whether hardfork includes EIP-3529 ##### hasEIP3860() > **hasEIP3860**: (`hardfork`) => `boolean` Check if a hardfork includes EIP-3860 (initcode size limit) ###### Parameters ###### hardfork [`Hardfork`](#hardfork-1) EVM hardfork ###### Returns `boolean` Whether hardfork includes EIP-3860 ##### hasEIP4844() > **hasEIP4844**: (`hardfork`) => `boolean` Check if a hardfork includes EIP-4844 (blob transactions) ###### Parameters ###### hardfork [`Hardfork`](#hardfork-1) EVM hardfork ###### Returns `boolean` Whether hardfork includes EIP-4844 ##### keccak256Cost() > **keccak256Cost**: (`this`) => `bigint` Calculate KECCAK256 gas cost (convenience form with this:) ###### Parameters ###### this `bigint` ###### Returns `bigint` Total gas cost ##### logCost() > **logCost**: (`this`) => `bigint` Calculate LOG gas cost (convenience form with this:) ###### Parameters ###### this ###### dataSize `bigint` ###### topicCount `bigint` ###### Returns `bigint` ##### maxRefund() > **maxRefund**: (`this`) => `bigint` Calculate maximum gas refund (convenience form with this:) ###### Parameters ###### this `bigint` ###### Returns `bigint` ##### memoryExpansionCost() > **memoryExpansionCost**: (`this`) => `object` Calculate memory expansion cost (convenience form with this:) ###### Parameters ###### this ###### newSize `bigint` ###### oldSize `bigint` ###### Returns `object` ###### expansionCost > **expansionCost**: `bigint` ###### newCost > **newCost**: `bigint` ###### oldCost > **oldCost**: `bigint` ###### words > **words**: `bigint` ##### Precompile > **Precompile**: [`Precompile`](namespaces/Precompile.mdx) ECRECOVER (address 0x01) - Fixed cost ##### sstoreCost() > **sstoreCost**: (`this`) => `object` Calculate SSTORE gas cost (convenience form with this:) ###### Parameters ###### this ###### currentValue `bigint` ###### isWarm `boolean` ###### newValue `bigint` ###### Returns `object` ###### cost > **cost**: `bigint` ###### refund > **refund**: `bigint` ##### txIntrinsicGas() > **txIntrinsicGas**: (`this`) => `bigint` Calculate transaction intrinsic gas cost (convenience form with this:) ###### Parameters ###### this ###### data `Uint8Array` ###### isCreate `boolean` ###### Returns `bigint` *** ### Call > `const` **Call**: `40n` = `40n` Defined in: [src/primitives/GasConstants/constants.js:177](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/constants.js#L177) Base CALL cost (40 gas) *** ### CallCode > `const` **CallCode**: `700n` = `700n` Defined in: [src/primitives/GasConstants/constants.js:201](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/constants.js#L201) CALLCODE cost (700 gas) - EIP-150 *** ### CallGasRetentionDivisor > `const` **CallGasRetentionDivisor**: `64n` = `64n` Defined in: [src/primitives/GasConstants/constants.js:231](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/constants.js#L231) 63/64 rule divisor for gas forwarding *** ### CallNewAccount > `const` **CallNewAccount**: `25000n` = `25000n` Defined in: [src/primitives/GasConstants/constants.js:195](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/constants.js#L195) Additional cost for new account creation (25000 gas) *** ### CallStipend > `const` **CallStipend**: `2300n` = `2300n` Defined in: [src/primitives/GasConstants/constants.js:183](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/constants.js#L183) Gas stipend for value transfer (2300 gas) *** ### CallValueTransfer > `const` **CallValueTransfer**: `9000n` = `9000n` Defined in: [src/primitives/GasConstants/constants.js:189](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/constants.js#L189) Additional cost for value transfer (9000 gas) *** ### ColdAccountAccess > `const` **ColdAccountAccess**: `2600n` = `2600n` Defined in: [src/primitives/GasConstants/constants.js:93](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/constants.js#L93) Cold account access (2600 gas) - EIP-2929 BALANCE, EXTCODESIZE, EXTCODECOPY, EXTCODEHASH, CALL family *** ### ColdSload > `const` **ColdSload**: `2100n` = `2100n` Defined in: [src/primitives/GasConstants/constants.js:86](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/constants.js#L86) Cold SLOAD (2100 gas) - EIP-2929 *** ### Copy > `const` **Copy**: `3n` = `3n` Defined in: [src/primitives/GasConstants/constants.js:303](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/constants.js#L303) Per word for copy operations (3 gas) *** ### Create > `const` **Create**: `32000n` = `32000n` Defined in: [src/primitives/GasConstants/constants.js:171](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/constants.js#L171) Base CREATE cost (32000 gas) *** ### CreateData > `const` **CreateData**: `200n` = `200n` Defined in: [src/primitives/GasConstants/constants.js:257](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/constants.js#L257) Per-byte cost for deployed code (200 gas) *** ### DelegateCall > `const` **DelegateCall**: `700n` = `700n` Defined in: [src/primitives/GasConstants/constants.js:207](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/constants.js#L207) DELEGATECALL cost (700 gas) - EIP-150 *** ### ExtStep > `const` **ExtStep**: `20n` = `20n` Defined in: [src/primitives/GasConstants/constants.js:54](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/constants.js#L54) External account interaction (20 gas) BALANCE, EXTCODESIZE, BLOCKHASH *** ### FastestStep > `const` **FastestStep**: `3n` = `3n` Defined in: [src/primitives/GasConstants/constants.js:26](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/constants.js#L26) Simple arithmetic and logic (3 gas) ADD, SUB, NOT, LT, GT, SLT, SGT, EQ, ISZERO, AND, OR, XOR, CALLDATALOAD, MLOAD, MSTORE, MSTORE8, PUSH, DUP, SWAP *** ### FastStep > `const` **FastStep**: `5n` = `5n` Defined in: [src/primitives/GasConstants/constants.js:33](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/constants.js#L33) Multiplication and division (5 gas) MUL, DIV, SDIV, MOD, SMOD *** ### InitcodeWord > `const` **InitcodeWord**: `2n` = `2n` Defined in: [src/primitives/GasConstants/constants.js:263](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/constants.js#L263) Per-word cost for initcode (2 gas) - EIP-3860 *** ### Jumpdest > `const` **Jumpdest**: `1n` = `1n` Defined in: [src/primitives/GasConstants/constants.js:139](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/constants.js#L139) JUMPDEST marker (1 gas) *** ### Keccak256Base > `const` **Keccak256Base**: `30n` = `30n` Defined in: [src/primitives/GasConstants/constants.js:64](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/constants.js#L64) Base cost for KECCAK256 (30 gas) *** ### Keccak256Word > `const` **Keccak256Word**: `6n` = `6n` Defined in: [src/primitives/GasConstants/constants.js:70](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/constants.js#L70) Per-word cost for KECCAK256 (6 gas per 32 bytes) *** ### LogBase > `const` **LogBase**: `375n` = `375n` Defined in: [src/primitives/GasConstants/constants.js:149](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/constants.js#L149) Base cost for LOG operations (375 gas) *** ### LogData > `const` **LogData**: `8n` = `8n` Defined in: [src/primitives/GasConstants/constants.js:155](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/constants.js#L155) Per-byte cost for LOG data (8 gas) *** ### LogTopic > `const` **LogTopic**: `375n` = `375n` Defined in: [src/primitives/GasConstants/constants.js:161](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/constants.js#L161) Per-topic cost for LOG (375 gas) *** ### MaxInitcodeSize > `const` **MaxInitcodeSize**: `49152n` = `49152n` Defined in: [src/primitives/GasConstants/constants.js:269](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/constants.js#L269) Maximum initcode size (49152 bytes) - EIP-3860 *** ### MaxRefundQuotient > `const` **MaxRefundQuotient**: `5n` = `5n` Defined in: [src/primitives/GasConstants/constants.js:309](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/constants.js#L309) Maximum refund quotient (1/5) - EIP-3529 *** ### Memory > `const` **Memory**: `3n` = `3n` Defined in: [src/primitives/GasConstants/constants.js:241](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/constants.js#L241) Linear coefficient for memory (3 gas) *** ### MidStep > `const` **MidStep**: `8n` = `8n` Defined in: [src/primitives/GasConstants/constants.js:40](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/constants.js#L40) Advanced arithmetic (8 gas) ADDMOD, MULMOD, SIGNEXTEND *** ### QuadCoeffDiv > `const` **QuadCoeffDiv**: `512n` = `512n` Defined in: [src/primitives/GasConstants/constants.js:247](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/constants.js#L247) Quadratic coefficient divisor (512) *** ### QuickStep > `const` **QuickStep**: `2n` = `2n` Defined in: [src/primitives/GasConstants/constants.js:18](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/constants.js#L18) Very cheap operations (2 gas) ADDRESS, ORIGIN, CALLER, CALLVALUE, CALLDATASIZE, CODESIZE, GASPRICE, RETURNDATASIZE, PC, MSIZE, GAS, CHAINID, SELFBALANCE *** ### Selfdestruct > `const` **Selfdestruct**: `5000n` = `5000n` Defined in: [src/primitives/GasConstants/constants.js:219](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/constants.js#L219) SELFDESTRUCT base cost (5000 gas) - EIP-150 *** ### SelfdestructRefund > `const` **SelfdestructRefund**: `24000n` = `24000n` Defined in: [src/primitives/GasConstants/constants.js:225](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/constants.js#L225) SELFDESTRUCT refund (24000 gas) - Removed in EIP-3529 *** ### Sload > `const` **Sload**: `100n` = `100n` Defined in: [src/primitives/GasConstants/constants.js:80](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/constants.js#L80) SLOAD on warm slot (100 gas) *** ### SlowStep > `const` **SlowStep**: `10n` = `10n` Defined in: [src/primitives/GasConstants/constants.js:47](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/constants.js#L47) Moderate computation (10 gas) JUMPI *** ### SstoreClear > `const` **SstoreClear**: `5000n` = `5000n` Defined in: [src/primitives/GasConstants/constants.js:123](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/constants.js#L123) SSTORE clear to zero (5000 gas) *** ### SstoreRefund > `const` **SstoreRefund**: `4800n` = `4800n` Defined in: [src/primitives/GasConstants/constants.js:129](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/constants.js#L129) Gas refund for clearing storage (4800 gas) - EIP-3529 *** ### SstoreReset > `const` **SstoreReset**: `5000n` = `5000n` Defined in: [src/primitives/GasConstants/constants.js:117](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/constants.js#L117) SSTORE modify existing non-zero (5000 gas) *** ### SstoreSentry > `const` **SstoreSentry**: `2300n` = `2300n` Defined in: [src/primitives/GasConstants/constants.js:105](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/constants.js#L105) Minimum gas for SSTORE (2300 gas) *** ### SstoreSet > `const` **SstoreSet**: `20000n` = `20000n` Defined in: [src/primitives/GasConstants/constants.js:111](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/constants.js#L111) SSTORE zero to non-zero (20000 gas) *** ### StaticCall > `const` **StaticCall**: `700n` = `700n` Defined in: [src/primitives/GasConstants/constants.js:213](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/constants.js#L213) STATICCALL cost (700 gas) - EIP-214 *** ### TLoad > `const` **TLoad**: `100n` = `100n` Defined in: [src/primitives/GasConstants/constants.js:335](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/constants.js#L335) TLOAD cost (100 gas) *** ### TStore > `const` **TStore**: `100n` = `100n` Defined in: [src/primitives/GasConstants/constants.js:341](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/constants.js#L341) TSTORE cost (100 gas) *** ### Tx > `const` **Tx**: `21000n` = `21000n` Defined in: [src/primitives/GasConstants/constants.js:279](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/constants.js#L279) Base transaction cost (21000 gas) *** ### TxContractCreation > `const` **TxContractCreation**: `53000n` = `53000n` Defined in: [src/primitives/GasConstants/constants.js:285](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/constants.js#L285) Contract creation transaction base cost (53000 gas) *** ### TxDataNonZero > `const` **TxDataNonZero**: `16n` = `16n` Defined in: [src/primitives/GasConstants/constants.js:297](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/constants.js#L297) Per non-zero byte in calldata (16 gas) *** ### TxDataZero > `const` **TxDataZero**: `4n` = `4n` Defined in: [src/primitives/GasConstants/constants.js:291](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/constants.js#L291) Per zero byte in calldata (4 gas) *** ### WarmStorageRead > `const` **WarmStorageRead**: `100n` = `100n` Defined in: [src/primitives/GasConstants/constants.js:99](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/constants.js#L99) Warm storage read (100 gas) - EIP-2929 ## Functions ### calculateCallCost() > **calculateCallCost**(`isWarm`, `hasValue`, `isNewAccount`, `availableGas`): `object` Defined in: [src/primitives/GasConstants/calculateCallCost.js:25](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/calculateCallCost.js#L25) Calculate CALL operation gas cost #### Parameters ##### isWarm `boolean` Whether target account is warm ##### hasValue `boolean` Whether call transfers value ##### isNewAccount `boolean` Whether target account doesn't exist ##### availableGas `bigint` Gas available for the call #### Returns `object` Gas cost breakdown ##### base > **base**: `bigint` ##### dynamic > **dynamic**: `bigint` ##### forwarded > **forwarded**: `bigint` ##### stipend > **stipend**: `bigint` ##### total > **total**: `bigint` #### Example ```typescript theme={null} const result = calculateCallCost(true, true, false, 100000n); // { base, dynamic, stipend, forwarded, total } ``` *** ### calculateCopyCost() > **calculateCopyCost**(`size`): `bigint` Defined in: [src/primitives/GasConstants/calculateCopyCost.js:9](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/calculateCopyCost.js#L9) Calculate copy operation gas cost #### Parameters ##### size `bigint` Size of data to copy in bytes #### Returns `bigint` Gas cost *** ### calculateCreateCost() > **calculateCreateCost**(`initcodeSize`, `deployedSize`): `object` Defined in: [src/primitives/GasConstants/calculateCreateCost.js:23](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/calculateCreateCost.js#L23) Calculate contract creation gas cost #### Parameters ##### initcodeSize `bigint` Size of initcode in bytes ##### deployedSize `bigint` Size of deployed bytecode in bytes #### Returns `object` Gas cost breakdown ##### base > **base**: `bigint` ##### dynamic > **dynamic**: `bigint` ##### total > **total**: `bigint` #### Throws If initcode size exceeds maximum #### Example ```typescript theme={null} const result = calculateCreateCost(1000n, 500n); // { base: 32000n, initcode: ..., deployed: ..., total: ... } ``` *** ### calculateKeccak256Cost() > **calculateKeccak256Cost**(`dataSize`): `bigint` Defined in: [src/primitives/GasConstants/calculateKeccak256Cost.js:14](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/calculateKeccak256Cost.js#L14) Calculate KECCAK256 gas cost #### Parameters ##### dataSize `bigint` Size of data in bytes #### Returns `bigint` Total gas cost #### Example ```typescript theme={null} const cost = calculateKeccak256Cost(64n); // 30 + (2 * 6) = 42 gas ``` *** ### calculateLogCost() > **calculateLogCost**(`topicCount`, `dataSize`): `bigint` Defined in: [src/primitives/GasConstants/calculateLogCost.js:16](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/calculateLogCost.js#L16) Calculate LOG gas cost #### Parameters ##### topicCount `bigint` Number of topics (0-4) ##### dataSize `bigint` Size of log data in bytes #### Returns `bigint` Total gas cost #### Example ```typescript theme={null} const cost = calculateLogCost(2n, 64n); // LOG2 with 64 bytes // 375 + (2 * 375) + (64 * 8) = 1637 gas ``` *** ### calculateMaxRefund() > **calculateMaxRefund**(`gasUsed`): `bigint` Defined in: [src/primitives/GasConstants/calculateMaxRefund.js:9](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/calculateMaxRefund.js#L9) Calculate maximum gas refund #### Parameters ##### gasUsed `bigint` Total gas used in transaction #### Returns `bigint` Maximum refundable gas *** ### calculateMemoryExpansionCost() > **calculateMemoryExpansionCost**(`oldSize`, `newSize`): `object` Defined in: [src/primitives/GasConstants/calculateMemoryExpansionCost.js:16](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/calculateMemoryExpansionCost.js#L16) Calculate memory expansion cost #### Parameters ##### oldSize `bigint` Previous memory size in bytes ##### newSize `bigint` New memory size in bytes #### Returns `object` Memory expansion cost ##### expansionCost > **expansionCost**: `bigint` ##### newCost > **newCost**: `bigint` ##### oldCost > **oldCost**: `bigint` ##### words > **words**: `bigint` #### Example ```typescript theme={null} const expansion = calculateMemoryExpansionCost(64n, 128n); // { oldCost, newCost, expansionCost, words } ``` *** ### calculateSstoreCost() > **calculateSstoreCost**(`isWarm`, `currentValue`, `newValue`): `object` Defined in: [src/primitives/GasConstants/calculateSstoreCost.js:24](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/calculateSstoreCost.js#L24) Calculate SSTORE gas cost #### Parameters ##### isWarm `boolean` Whether slot is warm (previously accessed) ##### currentValue `bigint` Current storage value (0n if empty) ##### newValue `bigint` New storage value #### Returns `object` Gas cost and potential refund ##### cost > **cost**: `bigint` ##### refund > **refund**: `bigint` #### Example ```typescript theme={null} const result = calculateSstoreCost(false, 0n, 100n); // { cost: 22100n, refund: 0n } - cold + set ``` *** ### calculateTxIntrinsicGas() > **calculateTxIntrinsicGas**(`data`, `isCreate`): `bigint` Defined in: [src/primitives/GasConstants/calculateTxIntrinsicGas.js:22](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/calculateTxIntrinsicGas.js#L22) Calculate transaction intrinsic gas cost #### Parameters ##### data `Uint8Array`\<`ArrayBufferLike`> Transaction calldata ##### isCreate `boolean` Whether transaction creates a contract #### Returns `bigint` Intrinsic gas cost #### Example ```typescript theme={null} const data = new Uint8Array([0, 1, 2, 0, 0]); const cost = calculateTxIntrinsicGas(data, false); // 21000 + (3 * 4) + (2 * 16) = 21044 gas ``` *** ### callCost() > **callCost**(`this`): `object` Defined in: [src/primitives/GasConstants/callCost.js:9](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/callCost.js#L9) Calculate CALL operation gas cost (convenience form with this:) #### Parameters ##### this ###### availableGas `bigint` ###### hasValue `boolean` ###### isNewAccount `boolean` ###### isWarm `boolean` #### Returns `object` ##### base > **base**: `bigint` ##### dynamic > **dynamic**: `bigint` ##### forwarded > **forwarded**: `bigint` ##### stipend > **stipend**: `bigint` ##### total > **total**: `bigint` *** ### copyCost() > **copyCost**(`this`): `bigint` Defined in: [src/primitives/GasConstants/copyCost.js:9](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/copyCost.js#L9) Calculate copy operation gas cost (convenience form with this:) #### Parameters ##### this `bigint` #### Returns `bigint` *** ### createCost() > **createCost**(`this`): `object` Defined in: [src/primitives/GasConstants/createCost.js:9](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/createCost.js#L9) Calculate contract creation gas cost (convenience form with this:) #### Parameters ##### this ###### deployedSize `bigint` ###### initcodeSize `bigint` #### Returns `object` ##### base > **base**: `bigint` ##### dynamic > **dynamic**: `bigint` ##### total > **total**: `bigint` *** ### getColdAccountAccessCost() > **getColdAccountAccessCost**(`hardfork`): `bigint` Defined in: [src/primitives/GasConstants/getColdAccountAccessCost.js:10](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/getColdAccountAccessCost.js#L10) Get cold account access cost for hardfork #### Parameters ##### hardfork [`Hardfork`](#hardfork-1) EVM hardfork #### Returns `bigint` Gas cost *** ### getColdSloadCost() > **getColdSloadCost**(`hardfork`): `bigint` Defined in: [src/primitives/GasConstants/getColdSloadCost.js:10](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/getColdSloadCost.js#L10) Get cold storage cost for hardfork #### Parameters ##### hardfork [`Hardfork`](#hardfork-1) EVM hardfork #### Returns `bigint` Gas cost *** ### getSelfdestructRefund() > **getSelfdestructRefund**(`hardfork`): `bigint` Defined in: [src/primitives/GasConstants/getSelfdestructRefund.js:10](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/getSelfdestructRefund.js#L10) Get selfdestruct refund for hardfork #### Parameters ##### hardfork [`Hardfork`](#hardfork-1) EVM hardfork #### Returns `bigint` Gas refund amount *** ### getSstoreRefund() > **getSstoreRefund**(`hardfork`): `bigint` Defined in: [src/primitives/GasConstants/getSstoreRefund.js:10](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/getSstoreRefund.js#L10) Get storage refund for hardfork #### Parameters ##### hardfork [`Hardfork`](#hardfork-1) EVM hardfork #### Returns `bigint` Gas refund amount *** ### hasEIP1153() > **hasEIP1153**(`hardfork`): `boolean` Defined in: [src/primitives/GasConstants/hasEIP1153.js:7](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/hasEIP1153.js#L7) Check if a hardfork includes EIP-1153 (transient storage) #### Parameters ##### hardfork [`Hardfork`](#hardfork-1) EVM hardfork #### Returns `boolean` Whether hardfork includes EIP-1153 *** ### hasEIP2929() > **hasEIP2929**(`hardfork`): `boolean` Defined in: [src/primitives/GasConstants/hasEIP2929.js:7](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/hasEIP2929.js#L7) Check if a hardfork includes EIP-2929 (cold/warm access costs) #### Parameters ##### hardfork [`Hardfork`](#hardfork-1) EVM hardfork #### Returns `boolean` Whether hardfork includes EIP-2929 *** ### hasEIP3529() > **hasEIP3529**(`hardfork`): `boolean` Defined in: [src/primitives/GasConstants/hasEIP3529.js:7](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/hasEIP3529.js#L7) Check if a hardfork includes EIP-3529 (reduced refunds) #### Parameters ##### hardfork [`Hardfork`](#hardfork-1) EVM hardfork #### Returns `boolean` Whether hardfork includes EIP-3529 *** ### hasEIP3860() > **hasEIP3860**(`hardfork`): `boolean` Defined in: [src/primitives/GasConstants/hasEIP3860.js:7](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/hasEIP3860.js#L7) Check if a hardfork includes EIP-3860 (initcode size limit) #### Parameters ##### hardfork [`Hardfork`](#hardfork-1) EVM hardfork #### Returns `boolean` Whether hardfork includes EIP-3860 *** ### hasEIP4844() > **hasEIP4844**(`hardfork`): `boolean` Defined in: [src/primitives/GasConstants/hasEIP4844.js:7](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/hasEIP4844.js#L7) Check if a hardfork includes EIP-4844 (blob transactions) #### Parameters ##### hardfork [`Hardfork`](#hardfork-1) EVM hardfork #### Returns `boolean` Whether hardfork includes EIP-4844 *** ### keccak256Cost() > **keccak256Cost**(`this`): `bigint` Defined in: [src/primitives/GasConstants/keccak256Cost.js:9](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/keccak256Cost.js#L9) Calculate KECCAK256 gas cost (convenience form with this:) #### Parameters ##### this `bigint` #### Returns `bigint` Total gas cost *** ### logCost() > **logCost**(`this`): `bigint` Defined in: [src/primitives/GasConstants/logCost.js:9](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/logCost.js#L9) Calculate LOG gas cost (convenience form with this:) #### Parameters ##### this ###### dataSize `bigint` ###### topicCount `bigint` #### Returns `bigint` *** ### maxRefund() > **maxRefund**(`this`): `bigint` Defined in: [src/primitives/GasConstants/maxRefund.js:9](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/maxRefund.js#L9) Calculate maximum gas refund (convenience form with this:) #### Parameters ##### this `bigint` #### Returns `bigint` *** ### memoryExpansionCost() > **memoryExpansionCost**(`this`): `object` Defined in: [src/primitives/GasConstants/memoryExpansionCost.js:9](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/memoryExpansionCost.js#L9) Calculate memory expansion cost (convenience form with this:) #### Parameters ##### this ###### newSize `bigint` ###### oldSize `bigint` #### Returns `object` ##### expansionCost > **expansionCost**: `bigint` ##### newCost > **newCost**: `bigint` ##### oldCost > **oldCost**: `bigint` ##### words > **words**: `bigint` *** ### sstoreCost() > **sstoreCost**(`this`): `object` Defined in: [src/primitives/GasConstants/sstoreCost.js:9](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/sstoreCost.js#L9) Calculate SSTORE gas cost (convenience form with this:) #### Parameters ##### this ###### currentValue `bigint` ###### isWarm `boolean` ###### newValue `bigint` #### Returns `object` ##### cost > **cost**: `bigint` ##### refund > **refund**: `bigint` *** ### txIntrinsicGas() > **txIntrinsicGas**(`this`): `bigint` Defined in: [src/primitives/GasConstants/txIntrinsicGas.js:9](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/GasConstants/txIntrinsicGas.js#L9) Calculate transaction intrinsic gas cost (convenience form with this:) #### Parameters ##### this ###### data `Uint8Array` ###### isCreate `boolean` #### Returns `bigint`