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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 decsub() functionThe decsub() function subtracts two decimal type values.

The decsub() function

The decsub() function subtracts two decimal type values.

Syntax

mint decsub(n1, n2, difference)
   dec_t *n1;
   dec_t *n2;
   dec_t *difference;

n1: A pointer to the decimal structure of the first operand.
n2: A pointer to the decimal structure of the second operand.
difference: A pointer to a decimal structure to contain the difference of n1 minus n2.

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