LibOpIsZeroNP

Git Source

Opcode to return 1 if the top item on the stack is zero, else 0.

Functions

integrity

function integrity(IntegrityCheckStateNP memory, Operand) internal pure returns (uint256, uint256);

run

ISZERO ISZERO is 1 if the top item is zero, else 0.

function run(InterpreterStateNP memory, Operand, Pointer stackTop) internal pure returns (Pointer);

referenceFn

Gas intensive reference implementation of ISZERO for testing.

function referenceFn(InterpreterStateNP memory, Operand, uint256[] memory inputs)
    internal
    pure
    returns (uint256[] memory outputs);