1 .\" Copyright 2001 Andries Brouwer <aeb@cwi.nl>.
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25 .TH FSEEKO 3 2014-10-02 "" "Linux Programmer's Manual"
27 fseeko, ftello \- seek to or report file position
32 .BI "int fseeko(FILE *" stream ", off_t " offset ", int " whence );
34 .BI "off_t ftello(FILE *" stream );
39 Feature Test Macro Requirements for glibc (see
40 .BR feature_test_macros (7)):
48 _FILE_OFFSET_BITS\ ==\ 64 ||
49 _POSIX_C_SOURCE\ >=\ 200112L || _XOPEN_SOURCE\ >=\ 600
51 (defining the obsolete _LARGEFILE_SOURCE macro also works)
59 functions are identical to
65 respectively, except that the
69 and the return value of
76 On some architectures, both
80 are 32-bit types, but defining
82 with the value 64 (before including
89 On successful completion,
93 returns the current offset.
94 Otherwise, \-1 is returned and
96 is set to indicate the error.
101 These functions are available under glibc since version 2.1.
105 These functions are found on System V-like systems.