Gas estimation on devnet

FHE operations are typically more computationally expensive than classical operations due to their inherent complexity. As a reference, here is an approximation of the gas cost associated with each operation.

ebool

Function name	Gas
and/or/xor	26,000
not	30,000

euint4

function name	Gas
add/sub	65,000
add/sub (scalar)	65,000
mul	150,000
mul (scalar)	88,000
div (scalar)	139,000
rem (scalar)	286,000
and/or/xor	32,000
shr/shl	116,000
shr/shl (scalar)	35,000
rotr/rotl	116,000
rotr/rotl (scalar)	35,000
eq/ne	51,000
ge/gt/le/lt	70,000
min/max	121,000
min/max (scalar)	121,000
neg	60,000
not	33,000
select	45,000

euint8

Function name	Gas
add/sub	94,000
add/sub (scalar)	94,000
mul	197,000
mul (scalar)	159,000
div (scalar)	238,000
rem (scalar)	460,000
and/or/xor	34,000
shr/shl	133,000
shr/shl (scalar)	35,000
rotr/rotl	133,000
rotr/rotl (scalar)	35,000
eq/ne	53,000
ge/gt/le/lt	82,000
min/max	128,000
min/max (scalar)	128,000
neg	95,000
not	34,000
select	47,000
randEuint8()	100,000

euint16

function name	euint16
add/sub	133,000
add/sub (scalar)	133,000
mul	262,000
mul (scalar)	208,000
div (scalar)	314,000
rem (scalar)	622,000
and/or/xor	34,000
shr/shl	153,000
shr/shl (scalar)	35,000
rotr/rotl	153,000
rotr/rotl (scalar)	35,000
eq/ne	54,000
ge/gt/le/lt	105,000
min/max	153,000
min/max (scalar)	150,000
neg	131,000
not	35,000
select	47,000
randEuint16()	100,000

euint32

Function name	Gas fee
add/sub	162,000
add/sub (scalar)	162,000
mul	359,000
mul (scalar)	264,000
div (scalar)	398,000
rem (scalar)	805,000
and/or/xor	35,000
shr/shl	183,000
shr/shl (scalar)	35,000
rotr/rotl	183,000
rotr/rotl (scalar)	35,000
eq/ne	82,000
ge/gt/le/lt	128,000
min/max	183,000
min/max (scalar)	164,000
neg	160,000
not	36,000
select	50,000
randEuint32()	100,000

euint64

Function name	Gas fee
add/sub	188,000
add/sub (scalar)	188,000
mul	641,000
mul (scalar)	356,000
div (scalar)	584,000
rem (scalar)	1,095,000
and/or/xor	38,000
shr/shl	227,000
shr/shl (scalar)	38,000
rotr/rotl	227,000
rotr/rotl (scalar)	38,000
eq/ne	86,000
ge/gt/le/lt	156,000
min/max	210,000
min/max (scalar)	192,000
neg	199,000
not	37,000
select	53,000
randEuint64()	100,000

eaddress

Function name	Gas fee
eq/ne	90,000

Gas limit

The current devnet has a gas limit of 10,000,000. If you send a transaction exceeding this limit, it won't be executed. Consequently, your wallet won't be able to emit a new transaction. To address this, emit a new transaction with the same nonce but the correct gas limit. In Metamask, you can enforce the use of a specific nonce by enabling the feature in 'Advanced Settings'.