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Extending HCL OneDB™Beyond standard relational database objects, HCL OneDB™ can be extended to handle specialized data types, access methods, routines, and other objects. HCL OneDB™ includes many built-in extensions that are fully integrated in the database server. HCL OneDB™ also provides DataBlade® modules, which are packages of extended database objects for a particular purpose and that are installed separately from the database server. Alternatively, you can create your own user-defined objects for HCL OneDB™.
Creating extensionsYou can create user-defined data types, routines, access methods, and other database objects to suit your needs. You can use application programming interfaces to write user-defined routines and applications that access data in HCL OneDB™ databases.
DataBlade® API Function ReferenceThe HCL OneDB™ DataBlade® API Function Reference describes the DataBlade® API functions and the subset of functions that the DataBlade® API supports.
Function descriptionsThis section gives comprehensive reference information about the functions that are valid within DataBlade® API modules. It lists the function descriptions in alphabetical order, with syntax, usage information, and return values for the functions.
The ifx_int8sub() functionThe ifx_int8sub() function subtracts two int8 type values.

The ifx_int8sub() function

The ifx_int8sub() function subtracts two int8 type values.

Syntax

mint ifx_int8sub(n1, n2, difference)
   ifx_int8_t *n1;
   ifx_int8_t *n2;
   ifx_int8_t *difference;

n1: A pointer to the int8 structure that contains the first operand.
n2: A pointer to the int8 structure that contains the second operand.
difference: A pointer to an int8 structure to contain the difference of n1 and n2 (n1 - n2).

The difference value can be the same as the value of either n1 or n2.