The int8 data type

The following table shows the fields of the structure ifx_int8_t, which represents an INT8 or SERIAL8 value.

Table 1. Fields of the ifx_int8_t structure

Field name	Field type	Purpose
data	unsigned 4-byte integer[INT8SIZE]	An array of integer values that make up the 8-byte integer value. When the INT8SIZE constant is defined as 2, this array contains two unsigned 4-byte integers. The actual data type of an unsigned 4-byte integer can be machine specific.
sign	short integer	A short integer to hold the sign (null, negative, or positive) of the 8-byte integer. The actual data type of a 2-byte integer can be machine specific.

The int8.h header file contains the ifx_int8 structure and a typedef called ifx_int8_t. Include this file in all C source files that use any int8 host variables as shown in the following example:

EXEC SQL include int8;

You can declare an int8 host variable in either of the following ways:

EXEC SQL BEGIN DECLARE SECTION;
   int8 int8_var1;
   ifx_int8_t int8_var2;
EXEC SQL BEGIN DECLARE SECTION;