crunch

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	This is the JargonFile (V4.00) entry for crunch - Next: cruncha cruncha cruncha, Prev: crumb
:crunch: 1. /vi./ To process, usually in a time-consuming or complicated way. Connotes an essentially trivial operation that is nonetheless painful to perform. The pain may be due to the trivialitys being embedded in a loop from 1 to 1,000,000,000. "FORTRAN programs do mostly number-crunching." 2. /vt./ To reduce the size of a file by a complicated scheme that produces bit configurations completely unrelated to the original data, such as by a Huffman code. (The file ends up looking something like a paper document would if somebody crunched the paper into a wad.) Since such compression usually takes more computations than simpler methods such as run-length encoding, the term is doubly appropriate. (This meaning is usually used in the construction file crunch(ing) to distinguish it from number-crunching.) See compress. 3. /n./ The character #. Used at XEROX and CMU, among other places. See [[ASCII]]. 4. /vt./ To squeeze program source into a minimum-size representation that will still compile or execute. The term came into being specifically for a famous program on the BBC micro that crunched BASIC source in order to make it run more quickly (it was a wholly interpretive BASIC, so the number of characters mattered). Obfuscated C Contest entries are often crunched; see the first example under that entry.
* (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)