> For the complete documentation index, see [llms.txt](https://docs.moneyonchain.com/main-rbtc-contract/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.moneyonchain.com/main-rbtc-contract/smart-contracts/abis-documentation/mocemacalculator.md).

# MoCEMACalculator

View Source: [contracts/MoCEMACalculator.sol](https://github.com/money-on-chain/main-RBTC-contract/blob/master-gitbook/contracts/MoCEMACalculator.sol)

**↗ Extends:** [**Governed**](/main-rbtc-contract/smart-contracts/abis-documentation/governed.md) **↘ Derived Contracts:** [**MoCState**](/main-rbtc-contract/smart-contracts/abis-documentation/mocstate.md)

**MoCEMACalculator** - version: 0.1.12

## Contract Members

**Constants & Variables**

```js
uint256 internal bitcoinMovingAverage;
```

***

```js
uint256 public smoothingFactor;
```

***

```js
uint256 public lastEmaCalculation;
```

***

```js
uint256 public emaCalculationBlockSpan;
```

***

```js
uint256 public constant PRICE_PRECISION;
```

***

```js
uint256 public constant FACTOR_PRECISION;
```

***

```js
uint256[50] private upgradeGap;
```

***

## MovingAverageCalculation

**Parameters**

| Name          | Type    | Description |
| ------------- | ------- | ----------- |
| price         | uint256 |             |
| movingAverage | uint256 |             |

## Functions

* [getBitcoinMovingAverage()](#getbitcoinmovingaverage)
* [getSmoothingFactor()](#getsmoothingfactor)
* [setSmoothingFactor(uint256 factor)](#setsmoothingfactor)
* [getGovernorAddress()](#getgovernoraddress)
* [getEmaCalculationBlockSpan()](#getemacalculationblockspan)
* [setEmaCalculationBlockSpan(uint256 blockSpan)](#setemacalculationblockspan)
* [shouldCalculateEma()](#shouldcalculateema)
* [getLastEmaCalculation()](#getlastemacalculation)
* [initializeMovingAverage(uint256 initialEma, uint256 smoothFactor, uint256 emaBlockSpan)](#initializemovingaverage)
* [setBitcoinMovingAverage(uint256 btcPrice)](#setbitcoinmovingaverage)
* [coefficientComp()](#coefficientcomp)
* [initializeGovernor(address \_governor)](#initializegovernor)
* [\_doSetSmoothingFactor(uint256 factor)](#_dosetsmoothingfactor)

### getBitcoinMovingAverage

```js
function getBitcoinMovingAverage() public view
returns(uint256)
```

**Arguments**

### getSmoothingFactor

```js
function getSmoothingFactor() public view
returns(uint256)
```

**Arguments**

### setSmoothingFactor

```js
function setSmoothingFactor(uint256 factor) public nonpayable onlyAuthorizedChanger 
```

**Arguments**

| Name   | Type    | Description |
| ------ | ------- | ----------- |
| factor | uint256 |             |

### getGovernorAddress

```js
function getGovernorAddress() public view
returns(address)
```

**Arguments**

### getEmaCalculationBlockSpan

```js
function getEmaCalculationBlockSpan() public view
returns(uint256)
```

**Arguments**

### setEmaCalculationBlockSpan

```js
function setEmaCalculationBlockSpan(uint256 blockSpan) public nonpayable onlyAuthorizedChanger 
```

**Arguments**

| Name      | Type    | Description                                                    |
| --------- | ------- | -------------------------------------------------------------- |
| blockSpan | uint256 | Defines how many blocks should pass between BMA calculations\* |

### shouldCalculateEma

```js
function shouldCalculateEma() public view
returns(bool)
```

**Arguments**

### getLastEmaCalculation

```js
function getLastEmaCalculation() public view
returns(uint256)
```

**Arguments**

### initializeMovingAverage

Provides Bitcoin's Price and Moving average. More information of EMA calculation <https://en.wikipedia.org/wiki/Exponential\\_smoothing>

```js
function initializeMovingAverage(uint256 initialEma, uint256 smoothFactor, uint256 emaBlockSpan) internal nonpayable
```

**Arguments**

| Name         | Type    | Description                                 |
| ------------ | ------- | ------------------------------------------- |
| initialEma   | uint256 | Initial ema value                           |
| smoothFactor | uint256 | Weight coefficient for EMA calculation.     |
| emaBlockSpan | uint256 | Block count in a period for EMA calculation |

### setBitcoinMovingAverage

Calculates a EMA of the price. More information of EMA calculation <https://en.wikipedia.org/wiki/Exponential\\_smoothing>

```js
function setBitcoinMovingAverage(uint256 btcPrice) internal nonpayable
```

**Arguments**

| Name     | Type    | Description    |
| -------- | ------- | -------------- |
| btcPrice | uint256 | Current price. |

### coefficientComp

Calculates the smoothing factor complement

```js
function coefficientComp() internal view
returns(uint256)
```

**Arguments**

### initializeGovernor

```js
function initializeGovernor(address _governor) internal nonpayable
```

**Arguments**

| Name       | Type    | Description |
| ---------- | ------- | ----------- |
| \_governor | address |             |

### \_doSetSmoothingFactor

```js
function _doSetSmoothingFactor(uint256 factor) private nonpayable
```

**Arguments**

| Name   | Type    | Description |
| ------ | ------- | ----------- |
| factor | uint256 |             |