toggle

	This is the JargonFile ^(V4.00) entry for toggle - Next: tool, Prev: toeprint
:toggle: /vt./ To change a bit from whatever state it is in to the other state; to change from 1 to 0 or from 0 to 1. This comes from toggle switches, such as standard light switches, though the word toggle actually refers to the mechanism that keeps the switch in the position to which it is flipped rather than to the fact that the switch has two positions. There are four things you can do to a bit: set it (force it to be 1), clear (or zero) it, leave it alone, or toggle it. (Mathematically, one would say that there are four distinct boolean-valued functions of one boolean argument, but saying that is much less fun than talking about toggling bits.)
* (text is auto-included via JargonExtension by mutante using jargon with VERSION 4.0.0, 24 JUL 1996* - JargonFile by Eric S. Raymond is in the public domain)*