Informix DataBlade API Programmer's Manual DataBlade API Function Descriptions

The mi_fp_setargprec() accessor function sets the precision of a fixed-point or floating-point argument of a user-defined routine in its associated MI_FPARAM structure.

void mi_fp_setargprec(fparam_ptr, arg_pos, arg_prec)

MI_FPARAM *fparam_ptr;

mi_integer arg_pos;

mi_integer arg_prec;

fparam_ptr	is a pointer to the associated MI_FPARAM structure.
arg_pos	is the index position into the argument-precision array for the argument whose precision you want to set.
arg_prec	is the integer precision, in number of digits, to set for the arg_pos+1 argument.

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

The mi_fp_setargprec() function sets the precision of the routine argument at position arg_pos in the MI_FPARAM structure that fparam_ptr references.

The precision is an attribute of the data type that represents the total number of digits the routine return value can hold, as follows.

The MI_FPARAM structure stores information about the precision of routine arguments in the zero-based argument-precision array. To set information for the nth argument, use an arg_pos value of n-1. For example, the following call to mi_fp_setargprec() sets the precision for the third argument of the my_func() UDR, with which fparam1 is associated:

mi_integer my_func(...., fparam1)
	

	MI_FPARAM *fparam1;
{
	

	mi_fp_setargprec(fparam1, 2, 10);

None.

See the descriptions of the following functions: mi_fp_argprec(), mi_fp_setargisnull(), mi_fp_setarglen(), mi_fp_setargscale(), mi_fp_setargtype(), mi_fp_retprec(), and mi_fp_setretprec().

For more information about the precision of a fixed-point data type, see Chapter 3, Using Numeric Data Types.