OpenOffice.org Macros Explained - LibreOffice-NA.US

Decimal Binary Octal Hexadecimal
13 1101 15 D
14 1110 16 E
15 1111 17 F
16 10000 20 10
17 10001 21 11
18 10010 22 12
Integers are assumed to be expressed as decimal numbers. Commas are not allowed. Hexadecimal numbers
are preceded by “&H” and octal numbers are preceded by “&O” (letter O, not a zero). Unfortunately, there is
no easy method to enter binary numbers. Table 8 presents a few simple guidelines for entering numbers.
Table 8. A few guidelines for entering numbers in OOo Basic.
Example
Use 1000 not 1,000
Description
Write numbers without a thousands separator; do not use commas.
+ 1000 A space is permitted between a leading plus or minus sign and the number.
&HFE is the same as 254
&O11 is the same as 9
Use 3.1415 not 3,1415
Precede a hexadecimal number with &H.
Precede an octal number with &O.
Do not use commas for the decimal.
6.022E23 In scientific notation, the “e” can be uppercase or lowercase.
Use 6.6e-34 not 6.6e -34 Spaces are not allowed in a number. With the space, this evaluates as 6.6 - 34 = -27.4.
6.022e+23
1.1e2.2 evaluates as 1.1e2
The exponent may contain a leading plus or minus sign.
The exponent must be an integer. The fractional portion is ignored.
In general, assigning a String to a numeric variable sets the variable to zero and does not generate an error. If
the first characters in the string represent a number, however, then the string is converted to a number and
the non-numeric portion of the string is ignored — numeric overflow is possible.
Integer variables
An integer is a whole number that may be positive, negative, or equal to zero. Integer variables are a good
choice for numbers representing non-fractional quantities, such as age or number of children. In OOo Basic,
Integer variables are 16-bit numbers supporting a range from -32768 through 32767. Floating-point numbers
assigned to an integer are rounded to the nearest Integer value. Appending a variable name with “%” when it
is declared is a shortcut to declaring it as type Integer.
Listing 9. Demonstrate integer variables.
Sub ExampleIntegerType
Dim i1 As Integer, i2% REM i1 and i2 are both Integer variables
Dim f2 As Double
Dim s$
f2= 3.5
i1= f2 REM i1 is rounded to 4
s = "3.50 => " & i1
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