MATHMOD MQL4 FREE

The calculated value of MathFloor(1.102941/0.1) will be 11.0, and the calculated value of the Lots_New variable will be 1.1 lots. In order to do it you can use the considered mathematical function: To calculate the desired amount of lots you should throw away all the 'needless' digits in the decimal part and replace them with zeros. However, the dealing center won't accept the order with this amount of lots, because the minimum Step=0.1 (in the most dealing centers). Spending all these money you can open one new order that has the 1500.0 / 1360.0 = 1.102941 amount of lots. In this case, the price of a new order may reach the 1500.0. The 5000.0*30/100 expression is the value of money the user laid out to open a new order. In this case, the expression to calculate Lots_New can be written as follows: Let Free=5000.0, One_Lot=1360.0 (In most of the dealing centers the cost of 1 lot of currency pair is in proportion to the cost of the symbol), Step=0.1. Let's use the numeric values of the variables for better visualization.

Let's examine the logic of reasoning of the programmer that compiled the expression to calculate the required amount of lots Lots_New for new orders.

MATHMOD MQL4 FREE

The values of free margin (Free) and 1 lot price (One_Lot) are necessary for calculation too. According to the rules that are specified by the dealing center, the correctly calculated amount of lots must be divisible by the minimum step of lots changing size (Step). In this case, the user specified 30% of free margin for new orders. The value of the Percent parameter is set by user. Let's examine the fragment of the lots amount calculation for new orders as an example: int Percent = 30 // % of free marginĭouble Free = AccountFreeMargin () // Free marginĭouble One_Lot = MarketInfo ( Symb, MODE_MARGINREQUIRED ) // 1 lot priceĭouble Step = MarketInfo ( Symb, MODE_LOTSTEP ) // Size step changedĭouble Lots_New = MathFloor ( Free * Percent /100 /One_Lot/ Step ) * Step Usage of such functions is very convenient, in some cases. In such a manner, modification of the sign of the passed to the function value leads to the different results, namely the received values are not equal to each other in absolute magnitude. Or if the -13.5 negative value is specified in the function, then the maximum smallest integer is equal to -14.0. For example, if the value of the given x parameter is 13.5 then the maximum number that has zeros after the decimal point is 13.0. The description says also that the function returns the maximum of possible numbers that is less than a specified one.

For example, the MathFloor() function may return 37.0 (positive number of the double type) or -4.0 (negative number of the double type). It should be realized that the function returns a real number that has all the positions equal to zero after the decimal point. Note that a value returned by the function is the real number (double type), at the same time, it is written that the function returns an integer. The function returns a numeric value that corresponds the greatest integer that is less or equal to x. Let's examine one of the functions of this kind. The usage of other functions claims certain attention and thoughtfulness. For example, the MathMax() function returns the maximum value of two values specified in the list of parameters of the function. There are no difficulties in using most of them. Mathematical and trigonometric functions are included in MQL4.

Mathmod mql4