Informix DataBlade API Programmer's Manual DataBlade API Function Descriptions

The mi_fp_arglen() accessor function obtains the length of an argument of a user-defined routine from its associated MI_FPARAM structure.

mi_integer mi_fp_arglen(fparam_ptr, arg_pos)

MI_FPARAM *fparam_ptr;

mi_integer arg_pos;

fparam_ptr	is a pointer to the associated MI_FPARAM structure.
arg_pos	is the index position into the argument-length array for the argument whose length you want.

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

The mi_fp_arglen() function obtains the length of the routine argument at position arg_pos from the MI_FPARAM structure that fparam_ptr references. The MI_FPARAM structure stores information about the lengths of routine arguments in the zero-based argument-length array. To obtain information about the nth argument, use an arg_pos value of n-1. For example, the following call to mi_fp_arglen() obtains the length for the third argument of the my_func() UDR, with which fparam1 is associated:

mi_integer my_func(...., fparam1)
	...
	MI_FPARAM *fparam1;
{
	mi_integer arg_len;
	...
	arg_len = mi_fp_arglen(fparam1, 2);

See the descriptions of the following functions: mi_fp_argisnull(), mi_fp_argprec(), mi_fp_argscale(), mi_fp_argtype(), mi_fp_retlen(), mi_fp_setarglen(), and mi_fp_setretlen().