Informix DataBlade API Programmer's Manual DataBlade API Function Descriptions

The mi_func_negator() function obtains the name of a negator function for the user-defined function associated with a function descriptor.

char *mi_func_negator(funcdesc_ptr)

MI_FUNC_DESC *funcdesc_ptr;

funcdesc_ptr

is a pointer to a function descriptor of the user-defined function to check.

Valid in Client LIBMI Application?	Valid in User-Defined Routine?
No	Yes

The mi_func_negator() function obtains the name of the negator function for the user-defined function associated with the funcdesc_ptr function descriptor. A negator function evaluates the Boolean NOT condition for its associated Boolean user-defined function. When you register a Boolean user-defined function, you can associate a negator function with the user-defined function. Specify the negator function with the NEGATOR routine modifier of the CREATE FUNCTION statement.

See the descriptions of the following functions: mi_cast_get(), mi_func_handlesnulls(), mi_func_isvariant(), mi_routine_get(), mi_routine_get_by_typeid(), and mi_td_cast_get().

For more information, see Checking for a Negator Function.