Skip to content

Latest commit

 

History

History
65 lines (51 loc) · 2.98 KB

calc.org

File metadata and controls

65 lines (51 loc) · 2.98 KB

❮ Back to Casual

Casual Calc

An opinionated Transient-based user interface to support the casual usage of Emacs Calc.

images/casual-calc-tmenu.png

Install

Casual Calc is available on MELPA.

If installed via list-packages then add this line to your Emacs initialization file.

(require 'casual-calc) ; optional if using autoloaded menu
(keymap-set calc-mode-map "C-o" #'casual-calc-tmenu)
(keymap-set calc-alg-map "C-o" #'casual-calc-tmenu)

Usage

  1. Invoke M-x calc to launch Calc.
  2. When the point is in the Calc window, invoke C-o (or a binding of your choosing) to launch the Casual Calc interface.

Once raised, the Casual Calc interface can be dismissed via:

  • C-g to dismiss the current menu.
  • C-q to dismiss the interface completely.

For nearly all menus, algebraic entry via the ’ binding is available, as well as basic calculator operations (addition, subtraction, multiplication, division) and stack operations (pop, enter).

Calc Basics

It helps to know some basics about Calc.

  • Calc is a stack-based calculator that supports both RPN and algebraic style entry.
    • By default it uses RPN entry, but this can be changed to algebraic.
  • Stack based operations are always RPN-style.
  • Undo has the keybinding U, redo is D.
  • The top of the stack is referred to as 1:
  • Calc vectors are punctuated with [ and ] (e.g. [2 3]) Matrix values are represented as vectors within a vector. For example, [[1 0] [0 1]] is a square diagonal matrix.
  • Calc vector indexes are 1-offset.
  • Intervals
    • Inclusive intervals are represented as [𝑛..𝑚], where 𝑛 < 𝑚.
    • Exclusive intervals are represented as (𝑛..𝑚), where 𝑛 < 𝑚.
    • Any combination of lower and upper bounds set to be inclusive or exclusive is supported.
  • Complex numbers are entered as (𝑟, 𝑖), where 𝑟 is the real part and 𝑖 is the imaginary.
  • Radix numbers are entered as 𝑏#𝑛 where 𝑏 is the base value and 𝑛 is the number. For example entering 2#0101 will put 5 on the stack.
  • H:M:S values are default entered as ℎ@ 𝑚” 𝑠’.
  • Org-mode active timestamps can be entered into Calc.
  • The top of the stack (1:) can be edited by pressing the ` key.
  • Entering a single quote (‘) will prompt you for an algebraic entry.

Sponsorship

If you enjoy using Casual Calc, consider making a modest financial contribution to help support its development and maintenance.

images/default-yellow.png

See Also