lc is a line-based RPN calculator that takes input from standard input. It supports floating point arithmetics and aims to be portable and standards compliant across POSIX(-like) systems.
This project is in a very early stage of development. Many basic mathematical operations are missing. Error checking is still in development. POSIX portability and compatibility with non-GNU libraries have not been tested outside Linux yet.
In these early stages, interfaces may quickly change and documentation may not perfectly reflect those changes immediately.
In order to build lc, you will need:
- A Linux system
- A C17 compiler (gcc, tcc, clang are supported, as well as linking against the MUSL implementation of the C Standard Library)
make(1)(GNU make, bmake are supported)- scdoc: to generate the manpage.
You may edit config.mk to tweak compiling options to your needs.
You may install lc by invoking make install with the proper permissions. You
may set DESTDIR to set up a destination directory, typically used to create
distibution packages. Conversely, you may uninstall lc by invoking make uninstall (passing DESTDIR if necessary as well).
lc accepts valid RPN expressions (e.g. 3 4 +, for "3 + 4") from
standard input. The result is printed to standard output in its own line. Error
and warning messages are printed to standard error.
For example:
$ echo '2 4 +' | lc
6.000000
Passing the -v option will print lc's version number and exit.
lc is licensed under the MIT License. See LICENSE file for copyright and license details.