c_ptio - Reads and writes data records to/from a tie point file

SYNTAX

#include "geompak.h"

FUNCTION c_ptio (ptdesc, ptdata)

     int                          *ptdesc;
     long                         *ptdata;

PARAMETERS

ptdesc (output, integer)

File descriptor used by the tie point I/O routines.

ptdata (output, long)

A pointer to a structure which will contain the tie point data record information for the type of tie point file being accessed:

	Type of File			C structure 
	Tie Point Selection data	TPSDATA		
	Merged Tie Point data		MTPDATA		
	Tie Point Location data		TPLDATA		

DESCRIPTION

This routine will sequentially read or write a tie point file, one data record at a time. The type of tie point file as well as whether the file is read from or written to is determined when the file was opened.

RETURN VALUE

c_ptio() returns

     E_SUCC (0)  --> successful completion
     E_FAIL (-1) --> operation failed
     E_EOF  (-2)  --> end of file

SPECIAL CONSIDERATIONS:

The c_ptio() call is for C only.