calc shell script examples--------------------------These calc shell scripts are provided because they serve as examples ofhow use the calc language, and/or because the authors thought them tobe useful!Please note that calc shell scripts must start with the line:    #!/usr/local/src/cmd/calc/calc -q -fThe above line MUST start in column 1 of the first line.   The first linemust also end in -f.  The -q is optional, but is recommended to disablethe processing of calc startup scripts.Also please note that single # shell line comments are not supported in calc.Comments must be /* c-like comment */ or start with a double ## symbol.This is the correct way to form a calc shell script:    #!/usr/local/src/cmd/calc/calc -q -f    /* a correct comment */    ## another correct comment    ### two or more together is also a comment    /*     * another correct comment     */    print "2+2 =", 2+2;	## yet another commentThe first argument after the path to calc executable must be an -S.The next arguments are optional.  The -q is often recommended becauseit will disable the processing of the startup scripts.For more informaton about calc command lines, see "help usage".This next example WRONG:    #!/usr/local/src/cmd/calc/calc -q    # This is not a calc calc comment because it has only a single #    # You must to start comments with ## or /*    # is is also wrong because the first line does not end in -f    print "This example has invalid comments"#####If you write something that you think is useful, please send it to:    calc-contrib at asthe dot com    [[ NOTE: Replace 'at' with @, 'dot' is with . and remove the spaces ]]    [[ NOTE: The EMail address uses 'asthe' and the web site URL uses 'isthe' ]]For more info, see:    help script    help cscript=-=4dsphere    Determine if 6 points lie on the surface of a 4-dimensional sphere in R^4.    4dsphere x0 y0 z0 w0   x1 y1 z1 w1   ...   x5 y5 z5 w5	x0 y0 z0 w0     point 0 in R^4	x1 y1 z1 w1     point 1 in R^4	...             ...	x5 y5 z5 w5     point 5 in R^4fproduct filename term ...    Write the big Endian product of terms to a file.  Use - for stdout.mersenne exp    Print the value of 2^exp-1.piforever    Print the value of pi forever, or as long as you cpu / memory allows.plus arg ...    Print the sum of 1 or more arguments.powerterm [base_limit] value    Print the value as a sum (or difference) of powers of integers up    to and including powers <= base_limit.  By default, base_limit is 10000.simple    A trivial example of a calc shell script.## 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.## 59 Temple Place, Suite 330, Boston, MA  02111-1307, USA.#### @(#) $Revision: 29.11 $## @(#) $Id: README.src,v 29.11 2007/02/07 00:33:10 chongo Exp $## @(#) $Source: /usr/local/src/cmd/calc/cscript/RCS/README.src,v $#### Under source code control:	1999/12/17 10:23:40## File existed as early as:	1999#### chongo <was here> /\oo/\	http://www.isthe.com/chongo/## Share and enjoy!  :-)	http://www.isthe.com/chongo/tech/comp/calc/