Real128 Data Type

Holds signed 128-bit (16-byte) IEEE floating-point values in the range −1.189731495357231765085759326628007E+4932 to −3.362103143112093506262677817321753E−4932 for negative values and 3.362103143112093506262677817321753E−4932 to 1.189731495357231765085759326628007E+4932 for positive values.

Instructions

The data type Real128 gives the largest and smallest possible magnitudes for a number. Real128 is two times the size of Real64 and four times the size of Real32.

Precision
Know that floating-point data types cannot represent many values accurately. Operations such as comparisons can cause results that you think are incorrect. See Troubleshooting Data Types for more information.
Default value
When you declare a variable of type Real128 and do not initialize it, its default value is zero (0.0).
Trailing zeros
The floating-point data types cannot internally represent trailing 0 characters after the decimal point. Thus numbers such as 1.4200 and 1.42 are the same value. If you must show trailing zeros, then you must use a formatter procedure.
Type characters
Real128 has no type characters.

Shared methods and properties

Real128.Bits As Int
Returns the number of available bits. This is always 128.
Real128.Default As Real128
Returns the default value, 0.0.
Real128.Epsilon As Real128
Returns the smallest difference between two values.
Real128.IsInf(num As Real128) As Boolean
Returns true if num is infinity (positive or negative). Mathematical overflow is one cause of this result.
Real128.IsNaN(num As Real128) As Boolean
Returns true if num is not a number (Nan). “Zero divided by zero” and “square root of a negative” are two causes of this result.
Real128.IsNegInf(num As Real128) As Boolean
Returns true if num is negative infinity.
Real128.IsPosInf(num As Real128) As Boolean
Returns true if num is positive infinity.
Real128.Max As Real128
Returns the maximum positive value.
Real128.Min As Real128
Returns the minimum negative value.
Real128.Parse(str As String, Optional #fmt As Format) As Real128
Tries to parse a string that shows as a floating-point number.
If #fmt is not given or is #Null, then it uses the format of the local culture. Or you can be explicit with “Format.#UserLocale”.
If #fmt is “Format.#RealLiteral”, then it uses the format of a literal of type Real128.

Examples

Dim foo As Real128

See also