/* Copyright (C) 1995, 1997, 1998 Aladdin Enterprises.  All rights reserved.
  
  This file is part of AFPL Ghostscript.
  
  AFPL Ghostscript is distributed with NO WARRANTY OF ANY KIND.  No author or
  distributor accepts any responsibility for the consequences of using it, or
  for whether it serves any particular purpose or works at all, unless he or
  she says so in writing.  Refer to the Aladdin Free Public License (the
  "License") for full details.
  
  Every copy of AFPL Ghostscript must include a copy of the License, normally
  in a plain ASCII text file named PUBLIC.  The License grants you the right
  to copy, modify and redistribute AFPL Ghostscript, but only under certain
  conditions described in the License.  Among other things, the License
  requires that the copyright notice and this notice be preserved on all
  copies.
*/

/*$Id: gsroptab.c,v 1.2 2000/09/19 19:00:32 lpd Exp $ */
/* Table of RasterOp procedures */
#include "stdpre.h"
#include "gsropt.h"

/*
 * The H-P documentation (probably copied from Microsoft documentation)
 * specifies RasterOp algorithms using reverse Polish notation, with
 *   a = AND, o = OR, n = NOT, x = XOR
 */

#ifdef __PROTOTYPES__
#  define rop_proc(pname, expr)\
private rop_operand pname(rop_operand D, rop_operand S, rop_operand T)\
{ return expr; }
#else
#  define rop_proc(pname, expr)\
private rop_operand pname(D,S,T) rop_operand D; rop_operand S; rop_operand T;\
{ return expr; }
#endif

#define a(u,v) (u&v)
#define o(u,v) (u|v)
#define x(u,v) (u^v)

rop_proc(rop0, 0)		/* 0 */
rop_proc(rop1, ~(D | S | T))		/* DTSoon */
rop_proc(rop2, D & ~(S | T))		/* DTSona */
rop_proc(rop3, ~(S | T))	/* TSon */
rop_proc(rop4, S & ~(D | T))		/* SDTona */
rop_proc(rop5, ~(D | T))	/* DTon */
rop_proc(rop6, ~(T | ~(D ^ S)))		/* TDSxnon */
rop_proc(rop7, ~(T | (D & S)))		/* TDSaon */
rop_proc(rop8, S & (D & ~T))		/* SDTnaa */
rop_proc(rop9, ~(T | (D ^ S)))		/* TDSxon */
rop_proc(rop10, D & ~T)		/* DTna */
rop_proc(rop11, ~(T | (S & ~D)))	/* TSDnaon */
rop_proc(rop12, S & ~T)		/* STna */
rop_proc(rop13, ~(T | (D & ~S)))	/* TDSnaon */
rop_proc(rop14, ~(T | ~(D | S)))	/* TDSonon */
rop_proc(rop15, ~T)		/* Tn */
rop_proc(rop16, T & ~(D | S))		/* TDSona */
rop_proc(rop17, ~(D | S))	/* DSon */
rop_proc(rop18, ~(S | ~(D ^ T)))	/* SDTxnon */
rop_proc(rop19, ~(S | (D & T)))		/* SDTaon */
rop_proc(rop20, ~(D | ~(T ^ S)))	/* DTSxnon */
rop_proc(rop21, ~(D | (T & S)))		/* DTSaon */
rop_proc(rop22, (T ^ (S ^ (D & ~(T & S)))))		/* TSDTSanaxx */
rop_proc(rop23, ~(S ^ ((S ^ T) & (D ^ S))))		/* SSTxDSxaxn */
rop_proc(rop24, (S ^ T) & (T ^ D))	/* STxTDxa */
rop_proc(rop25, ~(S ^ (D & ~(T & S))))		/* SDTSanaxn */
rop_proc(rop26, T ^ (D | (S & T)))	/* TDSTaox */
rop_proc(rop27, ~(S ^ (D & (T ^ S))))		/* SDTSxaxn */
rop_proc(rop28, T ^ (S | (D & T)))	/* TSDTaox */
rop_proc(rop29, ~(D ^ (S & (T ^ D))))		/* DSTDxaxn */
rop_proc(rop30, T ^ (D | S))		/* TDSox */
rop_proc(rop31, ~(T & (D | S)))		/* TDSoan */
rop_proc(rop32, D & (T & ~S))		/* DTSnaa */
rop_proc(rop33, ~(S | (D ^ T)))		/* SDTxon */
rop_proc(rop34, D & ~S)		/* DSna */
rop_proc(rop35, ~(S | (T & ~D)))	/* STDnaon */
rop_proc(rop36, (S ^ T) & (D ^ S))	/* STxDSxa */
rop_proc(rop37, ~(T ^ (D & ~(S & T))))		/* TDSTanaxn */
rop_proc(rop38, S ^ (D | (T & S)))	/* SDTSaox */
rop_proc(rop39, S ^ (D | ~(T ^ S)))		/* SDTSxnox */
rop_proc(rop40, D & (T ^ S))		/* DTSxa */
rop_proc(rop41, ~(T ^ (S ^ (D | (T & S)))))		/* TSDTSaoxxn */
rop_proc(rop42, D & ~(T & S))		/* DTSana */
rop_proc(rop43, ~x(a(x(D, T), x(T, S)), S))		/* SSTxTDxaxn */
rop_proc(rop44, (S ^ (T & (D | S))))		/* STDSoax */
rop_proc(rop45, T ^ (S | ~D))		/* TSDnox */
rop_proc(rop46, (T ^ (S | (D ^ T))))		/* TSDTxox */
rop_proc(rop47, ~(T & (S | ~D)))	/* TSDnoan */
rop_proc(rop48, T & ~S)		/* TSna */
rop_proc(rop49, ~(S | (D & ~T)))	/* SDTnaon */
rop_proc(rop50, S ^ (D | (T | S)))	/* SDTSoox */
rop_proc(rop51, ~S)		/* Sn */
rop_proc(rop52, S ^ (T | (D & S)))	/* STDSaox */
rop_proc(rop53, S ^ (T | ~(D ^ S)))		/* STDSxnox */
rop_proc(rop54, S ^ (D | T))		/* SDTox */
rop_proc(rop55, ~(S & (D | T)))		/* SDToan */
rop_proc(rop56, T ^ (S & (D | T)))	/* TSDToax */
rop_proc(rop57, S ^ (T | ~D))		/* STDnox */
rop_proc(rop58, S ^ (T | (D ^ S)))	/* STDSxox */
rop_proc(rop59, ~(S & (T | ~D)))	/* STDnoan */
rop_proc(rop60, T ^ S)		/* TSx */
rop_proc(rop61, S ^ (T | ~(D | S)))		/* STDSonox */
rop_proc(rop62, S ^ (T | (D & ~S)))		/* STDSnaox */
rop_proc(rop63, ~(T & S))	/* TSan */
rop_proc(rop64, T & (S & ~D))		/* TSDnaa */
rop_proc(rop65, ~(D | (T ^ S)))		/* DTSxon */
rop_proc(rop66, (S ^ D) & (T ^ D))	/* SDxTDxa */
rop_proc(rop67, ~(S ^ (T & ~(D & S))))		/* STDSanaxn */
rop_proc(rop68, S & ~D)		/* SDna */
rop_proc(rop69, ~(D | (T & ~S)))	/* DTSnaon */
rop_proc(rop70, D ^ (S | (T & D)))	/* DSTDaox */
rop_proc(rop71, ~(T ^ (S & (D ^ T))))		/* TSDTxaxn */
rop_proc(rop72, S & (D ^ T))		/* SDTxa */
rop_proc(rop73, ~(T ^ (D ^ (S | (T & D)))))		/* TDSTDaoxxn */
rop_proc(rop74, D ^ (T & (S | D)))	/* DTSDoax */
rop_proc(rop75, T ^ (D | ~S))		/* TDSnox */
rop_proc(rop76, S & ~(D & T))		/* SDTana */
rop_proc(rop77, ~(S ^ ((S ^ T) | (D ^ S))))		/* SSTxDSxoxn */
rop_proc(rop78, T ^ (D | (S ^ T)))	/* TDSTxox */
rop_proc(rop79, ~(T & (D | ~S)))	/* TDSnoan */
rop_proc(rop80, T & ~D)		/* TDna */
rop_proc(rop81, ~(D | (S & ~T)))	/* DSTnaon */
rop_proc(rop82, D ^ (T | (S & D)))	/* DTSDaox */
rop_proc(rop83, ~(S ^ (T & (D ^ S))))		/* STDSxaxn */
rop_proc(rop84, ~(D | ~(T | S)))	/* DTSonon */
rop_proc(rop85, ~D)		/* Dn */
rop_proc(rop86, D ^ (T | S))		/* DTSox */
rop_proc(rop87, ~(D & (T | S)))		/* DTSoan */
rop_proc(rop88, T ^ (D & (S | T)))	/* TDSToax */
rop_proc(rop89, D ^ (T | ~S))		/* DTSnox */
rop_proc(rop90, D ^ T)		/* DTx */
rop_proc(rop91, D ^ (T | ~(S | D)))		/* DTSDonox */
rop_proc(rop92, D ^ (T | (S ^ D)))	/* DTSDxox */
rop_proc(rop93, ~(D & (T | ~S)))	/* DTSnoan */
rop_proc(rop94, D ^ (T | (S & ~D)))		/* DTSDnaox */
rop_proc(rop95, ~(D & T))	/* DTan */
rop_proc(rop96, T & (D ^ S))		/* TDSxa */
rop_proc(rop97, ~(D ^ (S ^ (T | (D & S)))))		/* DSTDSaoxxn */
rop_proc(rop98, D ^ (S & (T | D)))	/* DSTDoax */
rop_proc(rop99, S ^ (D | ~T))		/* SDTnox */
rop_proc(rop100, S ^ (D & (T | S)))		/* SDTSoax */
rop_proc(rop101, D ^ (S | ~T))		/* DSTnox */
rop_proc(rop102, D ^ S)		/* DSx */
rop_proc(rop103, S ^ (D | ~(T | S)))		/* SDTSonox */
rop_proc(rop104, ~(D ^ (S ^ (T | ~(D | S)))))		/* DSTDSonoxxn */
rop_proc(rop105, ~(T ^ (D ^ S)))	/* TDSxxn */
rop_proc(rop106, D ^ (T & S))		/* DTSax */
rop_proc(rop107, ~(T ^ (S ^ (D & (T | S)))))		/* TSDTSoaxxn */
rop_proc(rop108, (D & T) ^ S)		/* SDTax */
rop_proc(rop109, ~((((T | D) & S) ^ D) ^ T))		/* TDSTDoaxxn */
rop_proc(rop110, ((~S | T) & D) ^ S)		/* SDTSnoax */
rop_proc(rop111, ~(~(D ^ S) & T))	/* TDSxnan */
rop_proc(rop112, ~(D & S) & T)		/* TDSana */
rop_proc(rop113, ~(((S ^ D) & (T ^ D)) ^ S))		/* SSDxTDxaxn */
rop_proc(rop114, ((T ^ S) | D) ^ S)		/* SDTSxox */
rop_proc(rop115, ~((~T | D) & S))	/* SDTnoan */
rop_proc(rop116, ((T ^ D) | S) ^ D)		/* DSTDxox */
rop_proc(rop117, ~((~T | S) & D))	/* DSTnoan */
rop_proc(rop118, ((~S & T) | D) ^ S)		/* SDTSnaox */
rop_proc(rop119, ~(D & S))	/* DSan */
rop_proc(rop120, (D & S) ^ T)		/* TDSax */
rop_proc(rop121, ~((((D | S) & T) ^ S) ^ D))		/* DSTDSoaxxn */
rop_proc(rop122, ((~D | S) & T) ^ D)		/* DTSDnoax */
rop_proc(rop123, ~(~(D ^ T) & S))	/* SDTxnan */
rop_proc(rop124, ((~S | D) & T) ^ S)		/* STDSnoax */
rop_proc(rop125, ~(~(T ^ S) & D))	/* DTSxnan */
rop_proc(rop126, (S ^ T) | (D ^ S))		/* STxDSxo */
rop_proc(rop127, ~((T & S) & D))	/* DTSaan */
rop_proc(rop128, (T & S) & D)		/* DTSaa */
rop_proc(rop129, ~((S ^ T) | (D ^ S)))		/* STxDSxon */
rop_proc(rop130, ~(T ^ S) & D)		/* DTSxna */
rop_proc(rop131, ~(((~S | D) & T) ^ S))		/* STDSnoaxn */
rop_proc(rop132, ~(D ^ T) & S)		/* SDTxna */
rop_proc(rop133, ~(((~T | S) & D) ^ T))		/* TDSTnoaxn */
rop_proc(rop134, (((D | S) & T) ^ S) ^ D)	/* DSTDSoaxx */
rop_proc(rop135, ~((D & S) ^ T))	/* TDSaxn */
rop_proc(rop136, D & S)		/* DSa */
rop_proc(rop137, ~(((~S & T) | D) ^ S))		/* SDTSnaoxn */
rop_proc(rop138, (~T | S) & D)		/* DSTnoa */
rop_proc(rop139, ~(((T ^ D) | S) ^ D))		/* DSTDxoxn */
rop_proc(rop140, (~T | D) & S)		/* SDTnoa */
rop_proc(rop141, ~(((T ^ S) | D) ^ S))		/* SDTSxoxn */
rop_proc(rop142, ((S ^ D) & (T ^ D)) ^ S)	/* SSDxTDxax */
rop_proc(rop143, ~(~(D & S) & T))	/* TDSanan */
rop_proc(rop144, ~(D ^ S) & T)		/* TDSxna */
rop_proc(rop145, ~(((~S | T) & D) ^ S))		/* SDTSnoaxn */
rop_proc(rop146, (((D | T) & S) ^ T) ^ D)	/* DTSDToaxx */
rop_proc(rop147, ~((T & D) ^ S))	/* STDaxn */
rop_proc(rop148, (((T | S) & D) ^ S) ^ T)	/* TSDTSoaxx */
rop_proc(rop149, ~((T & S) ^ D))	/* DTSaxn */
rop_proc(rop150, (T ^ S) ^ D)		/* DTSxx */
rop_proc(rop151, ((~(T | S) | D) ^ S) ^ T)	/* TSDTSonoxx */
rop_proc(rop152, ~((~(T | S) | D) ^ S))		/* SDTSonoxn */
rop_proc(rop153, ~(D ^ S))	/* DSxn */
rop_proc(rop154, (~S & T) ^ D)		/* DTSnax */
rop_proc(rop155, ~(((T | S) & D) ^ S))		/* SDTSoaxn */
rop_proc(rop156, (~D & T) ^ S)		/* STDnax */
rop_proc(rop157, ~(((T | D) & S) ^ D))		/* DSTDoaxn */
rop_proc(rop158, (((D & S) | T) ^ S) ^ D)	/* DSTDSaoxx */
rop_proc(rop159, ~((D ^ S) & T))	/* TDSxan */
rop_proc(rop160, D & T)		/* DTa */
rop_proc(rop161, ~(((~T & S) | D) ^ T))		/* TDSTnaoxn */
rop_proc(rop162, (~S | T) & D)		/* DTSnoa */
rop_proc(rop163, ~(((D ^ S) | T) ^ D))		/* DTSDxoxn */
rop_proc(rop164, ~((~(T | S) | D) ^ T))		/* TDSTonoxn */
rop_proc(rop165, ~(D ^ T))	/* TDxn */
rop_proc(rop166, (~T & S) ^ D)		/* DSTnax */
rop_proc(rop167, ~(((T | S) & D) ^ T))		/* TDSToaxn */
rop_proc(rop168, ((S | T) & D))		/* DTSoa */
rop_proc(rop169, ~((S | T) ^ D))	/* DTSoxn */
rop_proc(rop170, D)		/* D */
rop_proc(rop171, ~(S | T) | D)		/* DTSono */
rop_proc(rop172, (((S ^ D) & T) ^ S))		/* STDSxax */
rop_proc(rop173, ~(((D & S) | T) ^ D))		/* DTSDaoxn */
rop_proc(rop174, (~T & S) | D)		/* DSTnao */
rop_proc(rop175, ~T | D)	/* DTno */
rop_proc(rop176, (~S | D) & T)		/* TDSnoa */
rop_proc(rop177, ~(((T ^ S) | D) ^ T))		/* TDSTxoxn */
rop_proc(rop178, ((S ^ D) | (S ^ T)) ^ S)	/* SSTxDSxox */
rop_proc(rop179, ~(~(T & D) & S))	/* SDTanan */
rop_proc(rop180, (~D & S) ^ T)		/* TSDnax */
rop_proc(rop181, ~(((D | S) & T) ^ D))		/* DTSDoaxn */
rop_proc(rop182, (((T & D) | S) ^ T) ^ D)	/* DTSDTaoxx */
rop_proc(rop183, ~((T ^ D) & S))	/* SDTxan */
rop_proc(rop184, ((T ^ D) & S) ^ T)		/* TSDTxax */
rop_proc(rop185, (~((D & T) | S) ^ D))		/* DSTDaoxn */
rop_proc(rop186, (~S & T) | D)		/* DTSnao */
rop_proc(rop187, ~S | D)	/* DSno */
rop_proc(rop188, (~(S & D) & T) ^ S)		/* STDSanax */
rop_proc(rop189, ~((D ^ T) & (D ^ S)))		/* SDxTDxan */
rop_proc(rop190, (S ^ T) | D)		/* DTSxo */
rop_proc(rop191, ~(S & T) | D)		/* DTSano */
rop_proc(rop192, T & S)		/* TSa */
rop_proc(rop193, ~(((~S & D) | T) ^ S))		/* STDSnaoxn */
rop_proc(rop194, ~x(o(~o(S, D), T), S))		/* STDSonoxn */
rop_proc(rop195, ~(S ^ T))	/* TSxn */
rop_proc(rop196, ((~D | T) & S))	/* STDnoa */
rop_proc(rop197, ~(((S ^ D) | T) ^ S))		/* STDSxoxn */
rop_proc(rop198, ((~T & D) ^ S))	/* SDTnax */
rop_proc(rop199, ~(((T | D) & S) ^ T))		/* TSDToaxn */
rop_proc(rop200, ((T | D) & S))		/* SDToa */
rop_proc(rop201, ~((D | T) ^ S))	/* STDoxn */
rop_proc(rop202, ((D ^ S) & T) ^ D)		/* DTSDxax */
rop_proc(rop203, ~(((S & D) | T) ^ S))		/* STDSaoxn */
rop_proc(rop204, S)		/* S */
rop_proc(rop205, ~(T | D) | S)		/* SDTono */
rop_proc(rop206, (~T & D) | S)		/* SDTnao */
rop_proc(rop207, ~T | S)	/* STno */
rop_proc(rop208, (~D | S) & T)		/* TSDnoa */
rop_proc(rop209, ~(((T ^ D) | S) ^ T))		/* TSDTxoxn */
rop_proc(rop210, (~S & D) ^ T)		/* TDSnax */
rop_proc(rop211, ~(((S | D) & T) ^ S))		/* STDSoaxn */
rop_proc(rop212, x(a(x(D, T), x(T, S)), S))		/* SSTxTDxax */
rop_proc(rop213, ~(~(S & T) & D))	/* DTSanan */
rop_proc(rop214, ((((S & T) | D) ^ S) ^ T))		/* TSDTS aoxx */
rop_proc(rop215, ~((S ^ T) & D))	/* DTS xan */
rop_proc(rop216, ((T ^ S) & D) ^ T)		/* TDST xax */
rop_proc(rop217, ~(((S & T) | D) ^ S))		/* SDTS aoxn */
rop_proc(rop218, x(a(~a(D, S), T), D))		/* DTSD anax */
rop_proc(rop219, ~a(x(S, D), x(T, S)))		/* STxDSxan */
rop_proc(rop220, (~D & T) | S)		/* STD nao */
rop_proc(rop221, ~D | S)	/* SDno */
rop_proc(rop222, (T ^ D) | S)		/* SDT xo */
rop_proc(rop223, (~(T & D)) | S)	/* SDT ano */
rop_proc(rop224, ((S | D) & T))		/* TDS oa */
rop_proc(rop225, ~((S | D) ^ T))	/*  TDS oxn */
rop_proc(rop226, (((D ^ T) & S) ^ D))		/* DSTD xax */
rop_proc(rop227, ~(((T & D) | S) ^ T))		/* TSDT aoxn */
rop_proc(rop228, ((S ^ T) & D) ^ S)		/* SDTSxax */
rop_proc(rop229, ~(((T & S) | D) ^ T))		/* TDST aoxn */
rop_proc(rop230, (~(S & T) & D) ^ S)		/* SDTSanax */
rop_proc(rop231, ~a(x(D, T), x(T, S)))		/* STxTDxan */
rop_proc(rop232, x(a(x(S, D), x(T, S)), S))		/* SS TxD Sxax */
rop_proc(rop233, ~x(x(a(~a(S, D), T), S), D))		/* DST DSan axxn   */
rop_proc(rop234, (S & T) | D)		/* DTSao */
rop_proc(rop235, ~(S ^ T) | D)		/* DTSxno */
rop_proc(rop236, (T & D) | S)		/* SDTao */
rop_proc(rop237, ~(T ^ D) | S)		/* SDTxno */
rop_proc(rop238, S | D)		/* DSo */
rop_proc(rop239, (~T | D) | S)		/* SDTnoo */
rop_proc(rop240, T)		/* T */
rop_proc(rop241, ~(S | D) | T)		/* TDSono */
rop_proc(rop242, (~S & D) | T)		/* TDSnao */
rop_proc(rop243, ~S | T)	/* TSno */
rop_proc(rop244, (~D & S) | T)		/* TSDnao */
rop_proc(rop245, ~D | T)	/* TDno */
rop_proc(rop246, (S ^ D) | T)		/* TDSxo */
rop_proc(rop247, ~(S & D) | T)		/* TDSano */
rop_proc(rop248, (S & D) | T)		/* TDSao */
rop_proc(rop249, ~(S ^ D) | T)		/* TDSxno */
rop_proc(rop250, D | T)		/* DTo */
rop_proc(rop251, (~S | T) | D)		/* DTSnoo */
rop_proc(rop252, S | T)		/* TSo */
rop_proc(rop253, (~D | S) | T)		/* TSDnoo */
rop_proc(rop254, S | T | D)	/* DTSoo */
rop_proc(rop255, ~(rop_operand) 0)	/* 1 */
#undef rop_proc
     const rop_proc rop_proc_table[256] =
     {
	 rop0, rop1, rop2, rop3, rop4, rop5, rop6, rop7,
	 rop8, rop9, rop10, rop11, rop12, rop13, rop14, rop15,
	 rop16, rop17, rop18, rop19, rop20, rop21, rop22, rop23,
	 rop24, rop25, rop26, rop27, rop28, rop29, rop30, rop31,
	 rop32, rop33, rop34, rop35, rop36, rop37, rop38, rop39,
	 rop40, rop41, rop42, rop43, rop44, rop45, rop46, rop47,
	 rop48, rop49, rop50, rop51, rop52, rop53, rop54, rop55,
	 rop56, rop57, rop58, rop59, rop60, rop61, rop62, rop63,
	 rop64, rop65, rop66, rop67, rop68, rop69, rop70, rop71,
	 rop72, rop73, rop74, rop75, rop76, rop77, rop78, rop79,
	 rop80, rop81, rop82, rop83, rop84, rop85, rop86, rop87,
	 rop88, rop89, rop90, rop91, rop92, rop93, rop94, rop95,
	 rop96, rop97, rop98, rop99, rop100, rop101, rop102, rop103,
	 rop104, rop105, rop106, rop107, rop108, rop109, rop110, rop111,
	 rop112, rop113, rop114, rop115, rop116, rop117, rop118, rop119,
	 rop120, rop121, rop122, rop123, rop124, rop125, rop126, rop127,
	 rop128, rop129, rop130, rop131, rop132, rop133, rop134, rop135,
	 rop136, rop137, rop138, rop139, rop140, rop141, rop142, rop143,
	 rop144, rop145, rop146, rop147, rop148, rop149, rop150, rop151,
	 rop152, rop153, rop154, rop155, rop156, rop157, rop158, rop159,
	 rop160, rop161, rop162, rop163, rop164, rop165, rop166, rop167,
	 rop168, rop169, rop170, rop171, rop172, rop173, rop174, rop175,
	 rop176, rop177, rop178, rop179, rop180, rop181, rop182, rop183,
	 rop184, rop185, rop186, rop187, rop188, rop189, rop190, rop191,
	 rop192, rop193, rop194, rop195, rop196, rop197, rop198, rop199,
	 rop200, rop201, rop202, rop203, rop204, rop205, rop206, rop207,
	 rop208, rop209, rop210, rop211, rop212, rop213, rop214, rop215,
	 rop216, rop217, rop218, rop219, rop220, rop221, rop222, rop223,
	 rop224, rop225, rop226, rop227, rop228, rop229, rop230, rop231,
	 rop232, rop233, rop234, rop235, rop236, rop237, rop238, rop239,
	 rop240, rop241, rop242, rop243, rop244, rop245, rop246, rop247,
	 rop248, rop249, rop250, rop251, rop252, rop253, rop254, rop255
     };

/*
 * Here is the program that generated the table below.
 *
 int
 main(int argc, char *argv[])
 {      uint i;
 for ( i = 0; i < 256; ++i )
 printf("%d,",
 (rop3_uses_D(i) ? rop_usage_D : 0) |
 (rop3_uses_S(i) ? rop_usage_S : 0) |
 (rop3_uses_T(i) ? rop_usage_T : 0));
 fflush(stdout);
 return 0;
 }
 */

     const byte /*rop_usage_t */ rop_usage_table[256] =
     {
	 0, 7, 7, 6, 7, 5, 7, 7, 7, 7, 5, 7, 6, 7, 7, 4,
	 7, 3, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
	 7, 7, 3, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
	 6, 7, 7, 2, 7, 7, 7, 7, 7, 7, 7, 7, 6, 7, 7, 6,
	 7, 7, 7, 7, 3, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
	 5, 7, 7, 7, 7, 1, 7, 7, 7, 7, 5, 7, 7, 7, 7, 5,
	 7, 7, 7, 7, 7, 7, 3, 7, 7, 7, 7, 7, 7, 7, 7, 7,
	 7, 7, 7, 7, 7, 7, 7, 3, 7, 7, 7, 7, 7, 7, 7, 7,
	 7, 7, 7, 7, 7, 7, 7, 7, 3, 7, 7, 7, 7, 7, 7, 7,
	 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 7, 7, 7, 7, 7, 7,
	 5, 7, 7, 7, 7, 5, 7, 7, 7, 7, 1, 7, 7, 7, 7, 5,
	 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 7, 7, 7, 7,
	 6, 7, 7, 6, 7, 7, 7, 7, 7, 7, 7, 7, 2, 7, 7, 6,
	 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 7, 7,
	 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 7,
	 4, 7, 7, 6, 7, 5, 7, 7, 7, 7, 5, 7, 6, 7, 7, 0
     };