mirror of
https://github.com/lcn2/calc.git
synced 2025-08-16 01:03:29 +03:00
09d7080547
Added a bunch of information to the near bottom of HOWTO.INSTALL
on calc Makefiles. This information discusses the various
Makefiles found in the calc source.
Added comments in various calc Makefiles about their origin.
In particular, for Makefiles that are constructed such as
Makefile.simple, custom/Makefile and custom/Makefile.simple
there are comments about how they were made.
For all calc Makefiles, including those in sub-directories,
near the top there is now a line of the form:
# SRC: ... some message about the origin ...
calc shell script examples
--------------------------
These calc shell scripts are provided because they serve as examples of
how use the calc language, and/or because the authors thought them to
be useful!
Please note that calc shell scripts must start with the line:
#!/usr/local/src/bin/calc/calc -q -f
The above line MUST start in column 1 of the first line. The first line
must also end in -f. The -q is optional, but is recommended to disable
the 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/bin/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 comment
The first argument after the path to calc executable must be an -S.
The next arguments are optional. The -q is often recommended because
it 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/bin/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"
=-=
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^4
fproduct 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) 1999,2014,2021 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.
##
## 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/