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FILEPOS(3) Schily's LIBRARY FUNCTIONS FILEPOS(3)
NAME
filepos() - returns the logical position in a file
SYNOPSIS
off_t filepos(f)
FILE *f;
DESCRIPTION
filepos() returns the current file position as an offset in bytes from
the beginning of the file. This is the position of the next byte to be
read or written.
RETURNS
Returns the current offset into file f.
NOTES
The numbering of bytes in a file starts at 0. For byte sequential
devices, such as a terminal, the value returned will be the number of
bytes read or written from the current file, unless a seek call is
issued which changes the logical position but does not affect the
device.
File positions may be set to arbitrary values (via fileseek()) and are
only used by the file system when actual reading or writing occurs.
Normally, the file position is incremented by the amount of data
transferred for each sequential read or write.
Joerg Schilling 2022/09/09 FILEPOS(3)