Informix DataBlade API Programmer's Manual DataBlade API Function Descriptions

The mi_fp_nargs() accessor function obtains the number of arguments for the UDR routine from its associated MI_FPARAM structure.

mi_integer mi_fp_nargs(fparam_ptr)

MI_FPARAM *fparam_ptr;

fparam_ptr

is a pointer to the associated MI_FPARAM structure.

Valid in Client LIBMI Application?	Valid in User-Defined Routine?
Yes	Yes

You can use the mi_fp_nargs() function with the DataBlade API functions that obtain information about each argument of the UDR routine (such as mi_fp_argtype() and mi_fp_argisnull()). For example, the following call to mi_fp_nargs() obtains the number of arguments from the MI_FPARAM structure that fparam1 identifies and uses the value in a loop to obtain the length of each argument:

arg_count = mi_fp_nargs(fparam1);
for (i = 0; i < arg_count; i++)
	{
	arg_len[i] = mi_fp_arglen(fparam1, i);

See the descriptions of the following functions: mi_fp_argisnull(), mi_fp_arglen(), mi_fp_argprec(), mi_fp_argscale(), mi_fp_argtype(), mi_fp_nrets(), and mi_fp_setnargs().