# New on CTAN: calculation

The "calculation" environment formats reasoned calculations, also called calculational proofs. The notion of reasoned calculations or calculational proofs was originally advocated by Wim Feijen and Edsger Dijkstra. The "calculation" package accepts options "fleqn" and "leqno" (with the same effect as LaTeX options "fleqn" and "leqno", and inherits these from the document class), it allows steps and expressions to be numbered (by LaTeX equation numbers, obeying the LaTeX "\label" command to refer to these numbers), and a step doesn't take vertical space if its hint is empty. An expression in a calculation can be given a comment; it is placed at the side opposite to the equation numbers. Calculations are allowed inside hints although numbering and commenting is then disabled.

This package is located at http://mirror.ctan.org/macros/latex/contrib/calculation More information is at http://www.ctan.org/pkg/calculation We are supported by the TeX Users Group http://www.tug.org . Please join a users group; see http://www.tug.org/usergroups.html .

Thanks for the upload. For the CTAN Team Manfred Lotz

## calculation – Typesetting reasoned calculations, also called calculational proofs

The `calculation` environment formats reasoned calculations,
also called calculational proofs.

The notion of reasoned calculations or calculational proofs was
originally advocated by Wim Feijen and Edsger Dijkstra. The package
accepts options `fleqn` and `leqno` (with the same
effect as the LaTeX options `fleqn` and `leqno`, or
may inherit the options from the document class). It allows steps
and expressions to be numbered (by LaTeX equation numbers, obeying
the LaTeX `\label` command to refer to these numbers), and
a step doesn't take vertical space if its hint is empty. An
expression in a calculation can be given a comment; it is placed
at the side opposite to the equation numbers. Calculations are
allowed inside hints although numbering and commenting is then
disabled.

Package | calculation |

Version | 1.0 |

Copyright | 2014–2015 Maarten Fokkinga |

Maintainer | Maarten Fokkinga |