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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 dectodbl() functionThe dectodbl() function converts a decimal type number into a C double type number.

The dectodbl() function

The dectodbl() function converts a decimal type number into a C double type number.

Syntax

mint dectodbl(dec_val, dbl_val)
   dec_t *dec_val;
   double *dbl_val;

dec_val: A pointer to the decimal structure that contains the value to convert to a double value.
dbl_val: A pointer to a double variable to contain the result of the conversion.

Usage

The floating-point format of the host computer can result in loss of precision in the conversion of a decimal type number to a double type number.

Return values

0: The conversion was successful.
<0: The conversion failed.