DataBlade API Programmer's Manual

DataBlade API Programmer's Manual
Chapter 12: DataBlade API Function Descriptions

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mi_fp_returnisnull()

The mi_fp_returnisnull() accessor function gets the value of the fp_returnisnull[nth] field of an associated MI_FPARAM structure.

Syntax

mi_boolean mi_fp_returnisnull(fparamPtr, nth)

		MI_FPARAM *fparamPtr;

		mi_integer nth; 


fparamPtr
is a pointer to the associated MI_FPARAM structure.

nth
is the associated return value. For C routines, nth is always 0.







 



Valid in Client Application?

Valid in Server Routine?

Yes
Yes

Usage

The fp_returnisnull array contains null indicators for the return values of the routine. If the nth return value is NULL, fp_returnisnull[n-1] equals MI_TRUE.

Return Values

The value stored in the fp_returnisnull[nth] field of the input MI_FPARAM structure.

Related Topics

For additional information, see the descriptions of the following functions: mi_fp_argisnull(), mi_fp_argtype(), mi_fp_funcstate(), mi_fp_getcolid(), mi_fp_nargs(), mi_fp_nrets(), mi_fp_request(), mi_fp_rettype(), mi_fp_setargisnull(), mi_fp_setargtype(), mi_fp_setfuncid(), mi_fp_setfuncstate(), mi_fp_setisdone(), mi_fp_setnargs(), mi_fp_setnrets(), mi_fp_setrettype(), and mi_fp_setreturnisnull().

DataBlade API Programmer's Manual, version 9.1
Copyright © 1998, Informix Software, Inc. All rights reserved.