created by

scott urban

script type

utility

description

This scirpt calculates equations using the program 'bc' (found on most linux systems, available for most systems).  Visually select the equation you want to calculate, then hit ;bc - if the selection ends with an '=' sign, the answer will be appended after the equal, otherwise, the answer is echoed as a message. Equations can span multiple lines, and the full bc syntax is probably supported.  Additionally, sin (), cos (), etc, are transformed into the names used by bc (s () c (), etc). This script was first entered as a tip, but someone pointed out that functions are hard to use when posted as tips, so this makes it easier to download and use. Here are some example lines: 2 * sqrt (2) = 3 * (2 - 1) + 4.0 ^ 6 = 4 / 3 = 3 +    4 -       2 * (1 / (3 + 2)) = define rad (x) {   return (x / 180) * 4 * atan (1) } cos (rad (45)) = ibase = 2; obase = 2; 0100 * 0101 = Select each of these in turn (continguous non-blank lines, and hit ;bc for each), and this is what you get: 2 * sqrt (2) = 2.82842712474619009760 3 * (2 - 1) + 4.0 ^ 6 = 4099.000000 4 / 3 = 1.33333333333333333333 3 +    4 -       2 * (1 / (3 + 2)) = 6.60000000000000000000 define rad (x) {   return (x / 180) * 4 * atan (1) } cos (rad (45)) = .70710678118654752440 ibase = 2; obase = 2; 0100 * 0101 = 10100 Chaining is now allowed: start with this 2 + 3 = ;bc 2 + 3 = 5 add some more stuff: 2 + 3 = 5 * 2 = ;bc 2  + 3 = 5 * 2 = 10

install details

Download, place in plugin directory, or copy and paste function and mapping into your vimrc.

Click on the package to download.

package	script version	date	Vim version	user	release notes
bccalc.vim	1.9	2017-04-17	7.0	scott urban	Fix map clobbering bug - now puts answer at end in multi line selection.
bccalc.vim	1.8	2005-10-28	6.0	scott urban	Change to allow chaining of equations, 3 + 4 = <7> - 4 = <3> - see summary
bccalc.vim	1.7	2004-04-23	6.0	scott urban	Typo
bccalc.vim	1.6	2004-04-23	6.0	scott urban	Fixes for sin, cos, etc, function substitutions, thanks to C. Campbell. Fixes for multiple substitutions. Fix for :Calculate command
bccalc.vim	1.5	2004-04-22	6.0	scott urban	Added a normal mode mapping for equation on lines by themselves - visual mode mapping can be tedious.  Added a command version, you can do :Calculate 2 + 5 / 2 + 4 and 8 will be echoed
bccalc.vim	1.2	2002-02-18	6.0	scott urban	added bccalc_preload global variable - allows specifying file(s) with functions/variables to load  before doing calculations
bccalc.vim	1.1	2002-02-16	6.0	scott urban	Added "&", "<", ">", and "|" to escape characters that mess up when passed to shell.
bccalc.vim	1.0	2002-02-16	6.0	scott urban	Initial upload

ip used for rating: 3.141.31.240