### Numbers

`Dim number As Variant If (INT(number) = number) Then End If (INT(number)/number = 1) Then End If (TypeName(number) = "Integer") Then End `

If a variable needs to contain a whole number you can use Integer or Long.
If a variable needs to contain a fraction you can use Single, Double or Currency.

Computers can also store numbers as fixed-point numbers.
You can see an example of this in the Currency VBA data type explained above.
In the case of fixed-point numbers, the decimal points doesn't "float".
It remains fixed in a certain location and, therefore, the number has always a fixed number of digits after or before the decimal point.

Working with floating-point numbers, generally, demands more computational resources.
Therefore, the suggestion made in Mastering VBA for Microsoft Office 2013 is to use fixed-point numbers "whenever practical".

#### Floating Point Numbers

These are numbers that can be expressed as mm E ee, where mm is the mantissa and ee is the exponent (power of 10).

Using VBA
12.6 Mod 5 = 3

#### Application.Pi

Only available in Excel
Excel

`Application.Pi `

Avoid using floating-point data types. The Currency datatype is in fact faster than using the Single datatype because it doesn't use the floating point processor.

#### Overflow Run-Time Error

`Dim myDouble As Double Dim myInteger As Integer myDouble = 3276700 myInteger = 32767 myDouble = myInteger * 100     'TypeName(100) = Integer  `