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Some folks might think: “you still use RCS”?!? And we will say, hey, at least we switched from SCCS to RCS back in … I think it was around 1994 ... at least we are keeping up! :-) :-) :-) Logs say that SCCS version 18 became RCS version 19 on 1994 March 18. RCS served us well. But now it is time to move on. And so we are switching to git. Calc releases produce a lot of file changes. In the 125 releases of calc since 1996, when I started managing calc releases, there have been 15473 file mods!
75 lines
2.4 KiB
Plaintext
75 lines
2.4 KiB
Plaintext
NAME
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fclose - close a file
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SYNOPSIS
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fclose(fd)
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TYPES
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fd file
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return nul or int
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DESCRIPTION
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This function closes the open file associated with the descriptor fd.
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When this is done, the file value associated with the file remains
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a file value, but appears 'closed', and cannot be used in further
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file-related calls (except fclose) without causing errors. This same
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action occurs to all copies of the file value. You do not need to
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explicitly close all the copies of a file value.
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Standard input, standard output and standard error are always opened
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and cannot be closed.
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The truth value of a closed file is FALSE.
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The fclose function returns the numeric value of errno if
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there had been an error using the file, or the null value if
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there was no error.
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Closing a closed file is permitted. Fclose returns null in
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this case.
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EXAMPLE
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; fd = fopen("/etc/motd", "r")
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; if (fd) print "file is open";
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file is open
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; err = fclose(fd);
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; if (isnull(err)) print "close successful"; else strerror(err);
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close successful
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; if (!fd) print "file is closed";
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file is closed
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LIMITS
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fd != files(0) && fd != files(1) && fd != files(2)
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LINK LIBRARY
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none
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SEE ALSO
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errno, fclose, feof, ferror, fflush, fgetc, fgetline, fgets, files, fopen,
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fprintf, fputc, fputs, fseek, fsize, ftell, isfile, printf, prompt
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## Copyright (C) 1999-2006 Landon Curt Noll
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##
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## Calc is open software; you can redistribute it and/or modify it under
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## the terms of the version 2.1 of the GNU Lesser General Public License
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## as published by the Free Software Foundation.
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##
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## Calc is distributed in the hope that it will be useful, but WITHOUT
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## ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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## or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
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## Public License for more details.
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##
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## A copy of version 2.1 of the GNU Lesser General Public License is
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## distributed with calc under the filename COPYING-LGPL. You should have
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## received a copy with calc; if not, write to Free Software Foundation, Inc.
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## 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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##
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## Under source code control: 1994/10/27 03:04:16
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## File existed as early as: 1994
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##
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## chongo <was here> /\oo/\ http://www.isthe.com/chongo/
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## Share and enjoy! :-) http://www.isthe.com/chongo/tech/comp/calc/
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