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3-letter words starting with x

  • xpg — X/open Portability Guide
  • xpl — A small dialect of PL/I used for compiler writing from Stanford, 1967-69. XPL has one-dimensional arrays. I/O is achieved with character pseudo-variable INPUT and OUTPUT, e.g. OUTPUT = 'This is a line'; It has inline machine code. "Programmers are given all the rope they ask for. Novices tend to hang themselves fairly frequently." XPL has been implemented on IBM 360, Univac 1100, ICL System 4, CDC 6000 and Cyber series, XDS Sigma-5 and Sigma-7 and DEC PDP-10. An optimising XPL compiler (version 1) by Robin Vowels <[email protected]> is a standard implementation of XPL and is based on McKeeman, Horning, and Wortman's improved XCOM (which employs hashed symbol table generation). It includes the extra built-in function COREHALFWORD. The following areas have been optimised: procedures calls when the argument and corresponding parameter are of the same type, and when the argument is a constant; constant subscripts; use of CORELHALFWORD and COREWORD; string constants of length one; iterative DO statements by transferring code to the end of the loop. String constants of length one do not require a descriptor, hence more descriptors are available for string variables. Comparison operations are treated as commutative, and an improved Commute algorithm is used. Halfword instructions are generated for BIT(16) variables. These areas have been improved or re-written: calls on OUTPUT, catenation, integer-to-string conversion, multiply, divide, and MOD. An emitter for SS-type instructions has been added. The compiler achieves an 11% reduction in object code compiling itself, an 11% increase in compilation rate, a 55% increase in compilation speed when the $E toggle is set. Special treatment for catenating a string to an integer substantially decreases consumption of the free string area, and decreases string moves. The latter improvement is most noticeable on small core machines. Core requirements: less than the improved XCOM on which it is based (approx. 98000 bytes). Symbol table size is 468. Ported to IBM System 370. The compiler is written in XPL. The code generators are machine-specific.
  • xpw — Xtreme Pro Wrestling
  • xqk — Xylophone Quail Killers
  • xrc — Xtreme Racing Club
  • xrj — Xtreme Rumble Junkie
  • xrn — A newsreader program for Usenet news running under the X Window System.
  • xsb — (logic programming)   XSB extends the standard functionality of Prolog (being a descendant of PSB- and SB-Prolog) to include implementations of OLDT (tabling) and HiLog terms. OLDT resolution is extremely useful for recursive query computation, allowing programs to terminate correctly in many cases where Prolog does not. HiLog supports a type of higher-order programming in which predicate symbols can be variable or structured. This allows unification to be performed on the predicate symbols themselves in addition to the arguments of the predicates. Of course, Tabling and HiLog can be used together. Version 1.2 ports: Sun, Solaris, NeXT, Linux, 386 BSD, IRIX, HP-UX portability: Generally to 32-bit machines. interpreter, preprocessor(HiLog), documentation XSB research group / SUNY at Stony Brook (130.245.1.15) E-mail: <[email protected]>.
  • xsf — Xtreme Special Forces
  • xsi — X/Open System Interface
  • xsl — Extensible Stylesheet Language
  • xsn — XBox Sports Network
  • xtp — Xpress Transport Protocol
  • xtw — Xtreme Total Wrestling
  • xua — Xavier University Athletics
  • xui — X User Interface: program interface to the X Window System supported by DEC.
  • xul — XML User-Interface Language
  • xus — Plural form of xu.
  • xuv — extreme ultraviolet: involving radiation bridging the gap between X-rays and ultraviolet radiation
  • xvt — eXtensible Virtual Toolkit: a product allowing applications to be developed independent of GUI.
  • xwa — Xtreme Wrestling Association
  • xwb — Xtreme Wrestling Banner
  • xwe — Xtreme Wrestling Entertainment
  • xwf — Xtreme Wrestling Federation
  • xwl — X- Wing Legacy
  • xwo — Xtreme World Order
  • xwr — Xtreme Wrestling Revolution
  • xws — Xtreme Water Sports
  • xww — Xtreme World Wrestling
  • xwz — Xbox War Zone
  • xxl — extra extra large
  • xxx — /X-X-X/ A marker that attention is needed. Commonly used in program comments to indicate areas that are kluged or need to be. Some hackers liken "XXX" to the notional heavy-porn movie rating. Compare FIXME.
  • xzb — Xtreme Zoid Battles
  • xzw — Xtreme Zen Wrestling
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