The Microsoft Excel File Format - OpenOffice.org

5.50 FORMULA
• Result of the Formula
Dependent on the type of value the formula returns, the result field has the following format:
Result is a numeric value:
Offset Size Contents
0 8 IEEE 754 floating-point value (64-bit double precision)
Result is a string (the string follows in a STRING record, ➜5.102):
Offset Size Contents
0 1 00 H (identifier for a string value)
1 5 Not used
6 2 FFFF H
Note: In BIFF8 the string must not be empty. For empty cells there is a special identifier defined (see below).
Result is a Boolean value:
Offset Size Contents
0 1 01 H (identifier for a Boolean value)
1 1 Not used
2 1 0 = FALSE, 1 = TRUE
3 3 Not used
6 2 FFFF H
Result is an error value:
Offset Size Contents
0 1 02 H (identifier for an error value)
1 1 Not used
2 1 Error code (➜2.5.6)
3 3 Not used
6 2 FFFF H
Result is an empty cell (BIFF8), for example an empty string:
Offset Size Contents
0 1 03 H (identifier for an empty cell)
1 5 Not used
6 2 FFFF H
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