sdfstv Analyze data type and length of value introducing structure

The sdfstv function analyzes the operand value introducing a structure to determine its data type and length. The sdfstv function must be preceded by a sdftyp call returning the operand type structure (19) as its result. An operand value does not introduce a structure unless it was defined with STRUCTURE=*YES(FORM=*NORMAL) in the SDF-A statement ADD-VALUE.

Since the function has an optional parameter, there are 2 different formats.

Format 1:

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int sdfstv (char *area, int pos, int *typ, int *lng);

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Format 2:

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int sdfstvls (char *area, int pos, int *typ, int *lng, int lst);

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Description of the parameters

char *area	Pointer to the buffer in which the standardized transfer area was created (see sdfinit).
int pos int *typ	Position of the value of the operand introducing the structure. Pointer to a value containing the type of the operand value (for description of types, see "Format of the standardized transfer area").
int *lng int lst	Pointer to the length of the operand value. Relevant only if the operand value is an element in a list and specifies the position of the structure in the list.

Result

The function returns an integer as its result (see "Description of the C functions").