double

This topic is about the double data type.

Value syntax

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Description

Double type represents real numbers and includes both float and double c# type, since float are cast to double. Moreover, numbers are internally treated as double during operations execution and eventually cast to the final data type when they get written to the result variable. See arithmetic operators for further details.

• The default value is zero, 0.

• Double type supports arithmetic and comparison operators.

The XRS scripting language currently does not provide a definition of NaN for double type. Hence, in order to check if the value of a double variable is NaN, it is necessary to cast it to string, as in the following example:

value=Runtime::Math.Asin(pi_2);

Runtime::Environment.Assert(value.ToString()=="NaN", "value must be NaN");

Autocasting

Double type supports autocasting for:

• string, if in the correct input format; otherwise, it will raise an exception.

  double a=”2.1”; //a=2.1;

• int

  int a=1;

  double b=a; //b=1;

Methods

This table shows the currently implemented methods.