opensolaris man page for ftell

ftell(3C)						   Standard C Library Functions 						 ftell(3C)

NAME
       ftell, ftello - return a file offset in a stream

SYNOPSIS
       #include <stdio.h>

       long ftell(FILE *stream);

       off_t ftello(FILE *stream);

DESCRIPTION
       The ftell() function obtains the current value of the file-position indicator for the stream pointed to by stream. The ftello() function is
       identical to ftell() except for the return type.

RETURN VALUES
       Upon successful completion, the ftell() and ftello() functions return the current value of the file-position indicator for the stream  mea-
       sured in bytes from the beginning of the file. Otherwise, they return -1 and sets errno to indicate the error.

ERRORS
       The ftell() and ftello() functions will fail if:

       EBADF	 The file descriptor underlying stream is not an open file descriptor.

       ESPIPE	 The file descriptor underlying stream is associated with a pipe, a FIFO, or a socket.

       The ftell() function will fail if:

       EOVERFLOW    The current file offset cannot be represented correctly in an object of type long.

       The ftello() function will fail if:

       EOVERFLOW    The current file offset cannot be represented correctly in an object of type off_t.

USAGE
       The ftello() function has a transitional interface for 64-bit file offsets.  See lf64(5).

ATTRIBUTES
       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Standard			   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |MT-Safe			   |
       +-----------------------------+-----------------------------+

SEE ALSO
       lseek(2), fopen(3C), fseek(3C), attributes(5), , standards(5), lf64(5)

SunOS 5.11							    24 Jul 2002 							 ftell(3C)