/usr/share/calc/help/swap is in apcalc-common 2.12.4.4-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 | NAME
swap - swap values of two variables
SYNOPSIS
swap(x,y)
TYPES
x, y lvalues, any type
return null value
DESCRIPTION
swap(x,y) assigns the value of x to a temporary location, temp say,
assigns the value of x to y, and then assigns the value at temp to y.
swap(x,y) should not be used if the current value of one of the
variables is a component of the value of the other; for example, after:
A = list(1,2,3); swap(A, A[[1]]);
A will have the value 2, but a three-member list remains in memory
with no method within calc of recalling the list or freeing the
memory used.
EXAMPLE
; x = 3/4; y = "abc"; print x, y, swap(x,y), x, y
.75 abc abc .75
; A = list(1,2,3); mat B[3] = {4,5,6}; swap(A[[1]], B[1]); print A[[1]], B[1]
5 2
LIMITS
none
LINK LIBRARY
none
SEE ALSO
assign
## Copyright (C) 1999 Landon Curt Noll
##
## Calc is open software; you can redistribute it and/or modify it under
## the terms of the version 2.1 of the GNU Lesser General Public License
## as published by the Free Software Foundation.
##
## Calc is distributed in the hope that it will be useful, but WITHOUT
## ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
## or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
## Public License for more details.
##
## A copy of version 2.1 of the GNU Lesser General Public License is
## distributed with calc under the filename COPYING-LGPL. You should have
## received a copy with calc; if not, write to Free Software Foundation, Inc.
## 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
##
## @(#) $Revision: 30.1 $
## @(#) $Id: swap,v 30.1 2007/03/16 11:10:42 chongo Exp $
## @(#) $Source: /usr/local/src/cmd/calc/help/RCS/swap,v $
##
## Under source code control: 1995/12/18 12:34:58
## File existed as early as: 1995
##
## chongo <was here> /\oo/\ http://www.isthe.com/chongo/
## Share and enjoy! :-) http://www.isthe.com/chongo/tech/comp/calc/
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