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Flen (3FML)

Name

Flen, Flen32-return len of field occurrence in buffer

Synopsis

#include <stdio.h> 
#include "fml.h"  
 
int 
Flen(FBFR *fbfr, FLDID fieldid, FLDOCC oc)  
 
#include "fml32.h"  
 
long 
Flen32(FBFR32 *fbfr, FLDID32 fieldid, FLDOCC32 oc) 

Description

Flen() finds the value of the specified field occurrence in the buffer and returns its length. fbfr is a pointer to a fielded buffer. fieldid is a field identifier. oc is the occurrence number of the field.

Flen32 is used with 32-bit FML.

Return Values

On success, Flen() returns the field length.

This function returns -1 on error and sets Ferror to indicate the error condition.

Errors

Under the following conditions, Flen() fails and sets Ferror to:

[FALIGNERR]

"fielded buffer not aligned"
The buffer does not begin on the proper boundary.

[FNOTFLD]

"buffer not fielded"
The buffer is not a fielded buffer or has not been initialized by Finit().

[FNOTPRES]

"field not present"
A field occurrence is requested but the specified field and/or occurrence was not found in the fielded buffer.

[FBADFLD]

"unknown field number or type"
A field identifier is specified which is not valid.

See Also

Fintro(3), Fnum(3), Fpres(3)

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