1 .\" Copyright 2001 Andries Brouwer <aeb@cwi.nl>.
3 .\" %%%LICENSE_START(VERBATIM)
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13 .\" Since the Linux kernel and libraries are constantly changing, this
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25 .TH FSEEKO 3 2014-03-20 "" "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 many architectures both
85 #define _FILE_OFFSET_BITS 64
93 On successful completion,
97 returns the current offset.
98 Otherwise, \-1 is returned and
100 is set to indicate the error.
107 These functions are found on System V-like systems.
108 They are not present in libc4, libc5, glibc 2.0
109 but are available since glibc 2.1.
113 This page is part of release 3.68 of the Linux
116 A description of the project,
117 information about reporting bugs,
118 and the latest version of this page,
120 \%http://www.kernel.org/doc/man\-pages/.