1explain_fseeko_or_die(3)   Library Functions Manual   explain_fseeko_or_die(3)
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NAME

6       explain_fseeko_or_die  -  seek  to  or  report file position and report
7       errors
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SYNOPSIS

10       #include <libexplain/fseeko.h>
11       void explain_fseeko_or_die(FILE *fp, off_t offset, int whence);
12       int explain_fseeko_on_error(FILE *fp, off_t offset, int whence);
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DESCRIPTION

15       The explain_fseeko_or_die function is used to call the fseeko(3) system
16       call.  On  failure  an  explanation will be printed to stderr, obtained
17       from the explain_fseeko(3) function, and then the process terminates by
18       calling exit(EXIT_FAILURE).
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20       The explain_fseeko_on_error function is used to call the fseeko(3) sys‐
21       tem call. On failure an explanation will be printed to stderr, obtained
22       from the explain_fseeko(3) function, but still returns to the caller.
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24       fp      The fp, exactly as to be passed to the fseeko(3) system call.
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26       offset  The  offset,  exactly  as  to be passed to the fseeko(3) system
27               call.
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29       whence  The whence, exactly as to be passed  to  the  fseeko(3)  system
30               call.
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RETURN VALUE

33       The   explain_fseeko_or_die  function  only  returns  on  success,  see
34       fseeko(3) for more information. On failure, prints an  explanation  and
35       exits, it does not return.
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37       The explain_fseeko_on_error function always returns the value return by
38       the wrapped fseeko(3) system call.
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EXAMPLE

41       The explain_fseeko_or_die function is intended to be used in a  fashion
42       similar to the following example:
43              explain_fseeko_or_die(fp, offset, whence);
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SEE ALSO

46       fseeko(3)
47               seek to or report file position
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49       explain_fseeko(3)
50               explain fseeko(3) errors
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52       exit(2) terminate the calling process
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55       libexplain version 1.4
56       Copyright (C) 2013 Peter Miller
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60                                                      explain_fseeko_or_die(3)
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