@brief Return the order count of the book. @param book a pointer to the limit order book object @returns the number of orders in the book

@brief Return the order count at the given limit price. @param book a pointer to the limit order book object @param price the price to get the order

@brief Return the total number of orders at the given limit price. @param price the limit price to get the volume for @returns the volume for the giv

@brief Return the order count of the buy side of the book. @param book a pointer to the limit order book object @returns the number of orders on the

@brief Return the order count of the sell side of the book. @param book a pointer to the limit order book object @returns the number of orders on the

@brief Delete the limit order book instance, i.e., purge it from memory. @param book a pointer to the limit order book object

@brief Get the order with given ID. @param book a pointer to the limit order book object @param uid the order ID of the order to get @returns a point

@brief Return true if the book has an order with given ID. @param book a pointer to the limit order book object @param uid the order ID of the order

@brief Return the best price for the given side. @param side the side to get the best price from @returns the best price on the given side of the boo

@brief Return the last best buy price. @returns the best bid price in the book

@brief Return the last best sell price. @returns the best bid price in the book

@brief Return the current price of the asset using last prices. @returns the last midpoint price

Process an incoming limit order */

@brief Add a new limit order to the book. @param book a pointer to the limit order book object @param side whether the order is a buy (true) or sell

@brief Execute a market order. @param book a pointer to the limit order book object @param side whether the order is a buy (true) or sell (false) @pa

Place a market order. Args: side: the side of the order to place order_id: the ID for the order to add

@brief Return the opposite side using the invert operator. @param side the side to invert @returns the opposite of the given side

@brief Return the current price of the asset. @returns the best price in the book (the midpoint price)

@brief Return the volume at the best sell price. @returns the volume of buy orders at the best price

@brief Return the volume at the best sell price. @returns the volume of sell orders at the best price