44 lines
1.5 KiB
Groff
44 lines
1.5 KiB
Groff
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. \" Manual Seite fuer filepos
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. \" @(#)filepos.3 1.1
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. \"
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.TH FILEPOS 3 "15. Juli 1988" "J\*org Schilling" "Schily\'s LIBRARY FUNCTIONS"
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.SH NAME
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filepos() \- returns the logical position in a file
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.SH SYNOPSIS
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.nf
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.B
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long filepos(f)
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.B FILE *f;
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.fi
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.SH DESCRIPTION
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filepos() returns the current file position as an offset in bytes
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from the beginning of the file. This is the position of the next
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byte to be read or written.
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.SH RETURNS
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Returns the current offset into file f.
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.SH NOTES
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The numbering of bytes in a file starts at 0. For byte
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sequential devices, such as a terminal, the value returned will
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be the number of bytes read or written from the current file,
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unless a seek call is issued which changes the logical position
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but does not affect the device.
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.PP
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File positions may be set to arbitrary values (via fileseek() )
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and are only used by the file system when actual reading or
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writing occur.
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.PP
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Normally, the file position is incremented by the amount of data
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transferred for each sequential read or write.
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