bc

This is an implementation of POSIX bc that implements GNU bc extensions, as well as the period (.) extension for the BSD bc.

This bc also includes an implementation of dc in the same binary, which includes all FreeBSD and GNU extensions. However, it does not have the ! command; the author does not want to deal with the security implications.

This bc is Free and Open Source Software (FOSS). It is licensed under the BSD 0-clause License.

Build

To build, use the following commands:

make [bc|dc]
make install

This bc supports CC, CFLAGS, CPPFLAGS, LDFLAGS, LDLIBS, PREFIX, and DESTDIR make variables. Users can also create a file named config.mak in the root directory to control make.

There is also a make help command to list all targets and options.

Status

This bc is in beta stage. It has been well-tested and fuzzed, but has not yet been proven in the wild.

Language

This bc is written in pure ISO C99.

Commit Messages

This bc uses the commit message guidelines laid out in this blog post.

Semantic Versioning

This bc uses semantic versioning.

Contents

Files:

install.sh       Install script.
LICENSE.md       A Markdown form of the BSD 0-clause License.
Makefile         The Makefile.
NOTICE.md        List of contributors and copyright owners.
RELEASE.md       A checklist for making a release.
safe-install.sh  Safe install script from musl libc.

Folders:

include  All header files.
gen      The bc math library, help texts and code to generate C source.
src      All source code.
tests    All tests.
dist     Files to cut a release for toybox/busybox. (Maintainer use only.)