evm

v0.1.14

evm v0.1.14 EVM.Operation.StopAndArithmetic

Link to this section Summary

Functions

add(list, _)

Addition operation

addmod(list, _)

Modulo addition operation

div(list, _)

Integer division operation

exp(list, _)

Exponential operation

mod(list, _)

Modulo remainder operation

mul(list, _)

Multiplication operation

mulmod(list, _)

Modulo multiplication operation

sdiv(list, _)

Signed integer division operation (truncated)

signextend(list, _)

Extend length of two’s complement signed integer

smod(list, _)

Signed modulo remainder operation

stop(list, map)

Halts execution

sub(list, _)

Subtraction operation

Link to this section Functions

Link to this function add(list, _) 
add(EVM.Operation.stack_args, EVM.Operation.vm_map) :: EVM.val

Addition operation.

Adds the values and wraps and encodes them

Examples 

iex> EVM.Operation.StopAndArithmetic.add([1, 2], %{})
3

iex> EVM.Operation.StopAndArithmetic.add([-1, -5], %{})
-6

iex> EVM.Operation.StopAndArithmetic.add([0, 0], %{})
0
Link to this function addmod(list, _) 
addmod(EVM.Operation.stack_args, EVM.Operation.vm_map) :: EVM.val

Modulo addition operation.

Link to this function div(list, _)

Integer division operation.

Examples 

iex> EVM.Operation.StopAndArithmetic.div([5, 2], %{})
2

iex> EVM.Operation.StopAndArithmetic.div([10, 2], %{})
5

iex> EVM.Operation.StopAndArithmetic.div([10, 0], %{})
0
Link to this function exp(list, _) 
exp(EVM.Operation.stack_args, EVM.Operation.vm_map) :: EVM.val

Exponential operation

Examples 

iex> EVM.Operation.StopAndArithmetic.exp([2, 3], %{})
8
Link to this function mod(list, _) 
mod(EVM.Operation.stack_args, EVM.Operation.vm_map) :: EVM.val

Modulo remainder operation.

Link to this function mul(list, _) 
mul(EVM.Operation.stack_args, EVM.Operation.vm_map) :: EVM.val

Multiplication operation.

Examples 

iex> EVM.Operation.StopAndArithmetic.mul([5, 2], %{})
10

iex> EVM.Operation.StopAndArithmetic.mul([5, -2], %{})
-10
Link to this function mulmod(list, _) 
mulmod(EVM.Operation.stack_args, EVM.Operation.vm_map) :: EVM.val

Modulo multiplication operation.

Link to this function sdiv(list, _) 
sdiv(EVM.Operation.stack_args, EVM.Operation.vm_map) :: EVM.val

Signed integer division operation (truncated).

Link to this function signextend(list, _) 
signextend(EVM.Operation.stack_args, EVM.Operation.vm_map) :: EVM.val

Extend length of two’s complement signed integer.

Link to this function smod(list, _) 
smod(EVM.Operation.stack_args, EVM.Operation.vm_map) :: EVM.val

Signed modulo remainder operation.

Link to this function stop(list, map) 
stop(EVM.Operation.stack_args, EVM.Operation.vm_map) :: EVM.Operation.noop

Halts execution.

In our implementation, this is a no-op.

Examples 

iex> EVM.Operation.StopAndArithmetic.stop([], %{})
:noop
Link to this function sub(list, _) 
sub(EVM.Operation.stack_args, EVM.Operation.vm_map) :: EVM.val

Subtraction operation.

Examples 

iex> EVM.Operation.StopAndArithmetic.sub([5, 2], %{})
3

iex> EVM.Operation.StopAndArithmetic.sub([-1, 5], %{})
-6