void makepaletterange(int a,int b,RGB c,RGB d) {
RGB rgb;
float t;
for (int i=a;i<=b;i++) {
t=(float)(i-a)/(b-a);
rgb.r=(uchar)fromto(t,c.r,d.r);
rgb.g=(uchar)fromto(t,c.g,d.g);
rgb.b=(uchar)fromto(t,c.b,d.b);
#ifdef ALLEGRO
set_color(i,&rgb);
#endif
}
}
int
yyparse(void)
{
struct
{
YYSTYPE yyv;
int yys;
} yys[YYMAXDEPTH], *yyp, *yypt;
short *yyxi;
int yyj, yym, yystate, yyn, yyg;
YYSTYPE save1, save2;
int save3, save4;
long yychar;
save1 = yylval;
save2 = yyval;
save3 = yynerrs;
save4 = yyerrflag;
yystate = 0;
yychar = -1;
yynerrs = 0;
yyerrflag = 0;
yyp = &yys[-1];
goto yystack;
ret0:
yyn = 0;
goto ret;
ret1:
yyn = 1;
goto ret;
ret:
yylval = save1;
yyval = save2;
yynerrs = save3;
yyerrflag = save4;
return yyn;
yystack:
/* put a state and value onto the stack */
if(yydebug >= 4)
printf("char %s in %s", yytokname(yychar), yystatname(yystate));
yyp++;
if(yyp >= &yys[YYMAXDEPTH]) {
yyerror("yacc stack overflow");
goto ret1;
}
yyp->yys = yystate;
yyp->yyv = yyval;
yynewstate:
yyn = yypact[yystate];
if(yyn <= YYFLAG)
goto yydefault; /* simple state */
if(yychar < 0)
yychar = yylex1();
yyn += yychar;
if(yyn < 0 || yyn >= YYLAST)
goto yydefault;
yyn = yyact[yyn];
if(yychk[yyn] == yychar) { /* valid shift */
yychar = -1;
yyval = yylval;
yystate = yyn;
if(yyerrflag > 0)
yyerrflag--;
goto yystack;
}
yydefault:
/* default state action */
yyn = yydef[yystate];
if(yyn == -2) {
if(yychar < 0)
yychar = yylex1();
/* look through exception table */
for(yyxi=yyexca;; yyxi+=2)
if(yyxi[0] == -1 && yyxi[1] == yystate)
break;
for(yyxi += 2;; yyxi += 2) {
yyn = yyxi[0];
if(yyn < 0 || yyn == yychar)
break;
}
yyn = yyxi[1];
if(yyn < 0)
goto ret0;
}
if(yyn == 0) {
/* error ... attempt to resume parsing */
switch(yyerrflag) {
case 0: /* brand new error */
yyerror("syntax error");
if(yydebug >= 1) {
printf("%s", yystatname(yystate));
printf("saw %s\n", yytokname(yychar));
}
yyerrlab:
yynerrs++;
case 1:
case 2: /* incompletely recovered error ... try again */
yyerrflag = 3;
/* find a state where "error" is a legal shift action */
while(yyp >= yys) {
yyn = yypact[yyp->yys] + YYERRCODE;
if(yyn >= 0 && yyn < YYLAST) {
yystate = yyact[yyn]; /* simulate a shift of "error" */
if(yychk[yystate] == YYERRCODE)
goto yystack;
}
/* the current yyp has no shift onn "error", pop stack */
if(yydebug >= 2)
printf("error recovery pops state %d, uncovers %d\n",
yyp->yys, (yyp-1)->yys );
yyp--;
}
/* there is no state on the stack with an error shift ... abort */
goto ret1;
case 3: /* no shift yet; clobber input char */
if(yydebug >= YYEOFCODE)
printf("error recovery discards %s\n", yytokname(yychar));
if(yychar == YYEOFCODE)
goto ret1;
yychar = -1;
goto yynewstate; /* try again in the same state */
}
}
/* reduction by production yyn */
if(yydebug >= 2)
printf("reduce %d in:\n\t%s", yyn, yystatname(yystate));
yypt = yyp;
yyp -= yyr2[yyn];
yyval = (yyp+1)->yyv;
yym = yyn;
/* consult goto table to find next state */
yyn = yyr1[yyn];
yyg = yypgo[yyn];
yyj = yyg + yyp->yys + 1;
if(yyj >= YYLAST || yychk[yystate=yyact[yyj]] != -yyn)
yystate = yyact[yyg];
switch(yym) {
case 1:
#line 24 "/sys/src/cmd/eqn/eqn.y"
{ putout(yypt[-0].yyv); } break;
case 2:
#line 25 "/sys/src/cmd/eqn/eqn.y"
{ ERROR "syntax error" WARNING; } break;
case 3:
#line 26 "/sys/src/cmd/eqn/eqn.y"
{ eqnreg = 0; } break;
case 5:
#line 30 "/sys/src/cmd/eqn/eqn.y"
{ eqnbox(yypt[-1].yyv, yypt[-0].yyv, 0); } break;
case 6:
#line 31 "/sys/src/cmd/eqn/eqn.y"
{ eqnbox(yypt[-1].yyv, yypt[-0].yyv, 1); } break;
case 7:
#line 32 "/sys/src/cmd/eqn/eqn.y"
{ lineup(0); } break;
case 8:
#line 35 "/sys/src/cmd/eqn/eqn.y"
{ yyval = yypt[-0].yyv; lineup(1); } break;
case 9:
#line 38 "/sys/src/cmd/eqn/eqn.y"
{ yyval = yypt[-0].yyv; } break;
case 10:
#line 39 "/sys/src/cmd/eqn/eqn.y"
{ yyval = 0; } break;
case 11:
#line 42 "/sys/src/cmd/eqn/eqn.y"
{ yyval = yypt[-0].yyv; } break;
case 12:
#line 43 "/sys/src/cmd/eqn/eqn.y"
{ yyval = 0; } break;
case 13:
#line 46 "/sys/src/cmd/eqn/eqn.y"
{ yyval = yypt[-1].yyv; } break;
case 14:
#line 47 "/sys/src/cmd/eqn/eqn.y"
{ text(QTEXT, (char *) yypt[-0].yyv); } break;
case 15:
#line 48 "/sys/src/cmd/eqn/eqn.y"
{ text(CONTIG, (char *) yypt[-0].yyv); } break;
case 16:
#line 49 "/sys/src/cmd/eqn/eqn.y"
{ text(SPACE, (char *) 0); } break;
case 17:
#line 50 "/sys/src/cmd/eqn/eqn.y"
{ text(THIN, (char *) 0); } break;
case 18:
#line 51 "/sys/src/cmd/eqn/eqn.y"
{ text(TAB, (char *) 0); } break;
case 19:
#line 52 "/sys/src/cmd/eqn/eqn.y"
{ funny(SUM); } break;
case 20:
#line 53 "/sys/src/cmd/eqn/eqn.y"
{ funny(PROD); } break;
case 21:
#line 54 "/sys/src/cmd/eqn/eqn.y"
{ funny(UNION); } break;
case 22:
#line 55 "/sys/src/cmd/eqn/eqn.y"
{ funny(INTER); } break;
case 23:
#line 56 "/sys/src/cmd/eqn/eqn.y"
{ boverb(yypt[-2].yyv, yypt[-0].yyv); } break;
case 24:
#line 57 "/sys/src/cmd/eqn/eqn.y"
{ mark(yypt[-0].yyv); } break;
case 25:
#line 58 "/sys/src/cmd/eqn/eqn.y"
{ size(yypt[-1].yyv, yypt[-0].yyv); } break;
case 26:
#line 59 "/sys/src/cmd/eqn/eqn.y"
{ font(yypt[-1].yyv, yypt[-0].yyv); } break;
case 27:
#line 60 "/sys/src/cmd/eqn/eqn.y"
{ fatbox(yypt[-0].yyv); } break;
case 28:
#line 61 "/sys/src/cmd/eqn/eqn.y"
{ sqrt(yypt[-0].yyv); } break;
case 29:
#line 62 "/sys/src/cmd/eqn/eqn.y"
{ps -= deltaps;} break;
case 30:
#line 62 "/sys/src/cmd/eqn/eqn.y"
{ subsup(yypt[-4].yyv, yypt[-1].yyv, yypt[-0].yyv); } break;
case 31:
#line 63 "/sys/src/cmd/eqn/eqn.y"
{ps -= deltaps;} break;
case 32:
#line 63 "/sys/src/cmd/eqn/eqn.y"
{ subsup(yypt[-3].yyv, 0, yypt[-0].yyv); } break;
case 33:
#line 64 "/sys/src/cmd/eqn/eqn.y"
{ps -= deltaps;} break;
case 34:
#line 64 "/sys/src/cmd/eqn/eqn.y"
{ integral(yypt[-4].yyv, yypt[-1].yyv, yypt[-0].yyv); } break;
case 35:
#line 65 "/sys/src/cmd/eqn/eqn.y"
{ps -= deltaps;} break;
case 36:
#line 65 "/sys/src/cmd/eqn/eqn.y"
{ integral(yypt[-3].yyv, 0, yypt[-0].yyv); } break;
case 37:
#line 66 "/sys/src/cmd/eqn/eqn.y"
{ integral(yypt[-0].yyv, 0, 0); } break;
case 38:
#line 67 "/sys/src/cmd/eqn/eqn.y"
{ps -= deltaps;} break;
case 39:
#line 67 "/sys/src/cmd/eqn/eqn.y"
{ fromto(yypt[-4].yyv, yypt[-1].yyv, yypt[-0].yyv); } break;
case 40:
#line 68 "/sys/src/cmd/eqn/eqn.y"
{ps -= deltaps;} break;
case 41:
#line 68 "/sys/src/cmd/eqn/eqn.y"
{ fromto(yypt[-3].yyv, 0, yypt[-0].yyv); } break;
case 42:
#line 69 "/sys/src/cmd/eqn/eqn.y"
{ paren(yypt[-2].yyv, yypt[-1].yyv, yypt[-0].yyv); } break;
case 43:
#line 70 "/sys/src/cmd/eqn/eqn.y"
{ paren(yypt[-1].yyv, yypt[-0].yyv, 0); } break;
case 44:
#line 71 "/sys/src/cmd/eqn/eqn.y"
{ diacrit(yypt[-1].yyv, yypt[-0].yyv); } break;
case 45:
#line 72 "/sys/src/cmd/eqn/eqn.y"
{ move(FWD, yypt[-1].yyv, yypt[-0].yyv); } break;
case 46:
#line 73 "/sys/src/cmd/eqn/eqn.y"
{ move(UP, yypt[-1].yyv, yypt[-0].yyv); } break;
case 47:
#line 74 "/sys/src/cmd/eqn/eqn.y"
{ move(BACK, yypt[-1].yyv, yypt[-0].yyv); } break;
case 48:
#line 75 "/sys/src/cmd/eqn/eqn.y"
{ move(DOWN, yypt[-1].yyv, yypt[-0].yyv); } break;
case 49:
#line 76 "/sys/src/cmd/eqn/eqn.y"
{ pile(yypt[-0].yyv); ct = yypt[-0].yyv; } break;
case 50:
#line 77 "/sys/src/cmd/eqn/eqn.y"
{yyval=ct;} break;
case 51:
#line 77 "/sys/src/cmd/eqn/eqn.y"
{ matrix(yypt[-3].yyv); ct = yypt[-3].yyv; } break;
case 52:
#line 80 "/sys/src/cmd/eqn/eqn.y"
{ setintegral(); } break;
case 53:
#line 83 "/sys/src/cmd/eqn/eqn.y"
{ yyval = atoi((char *) yypt[-1].yyv); } break;
case 54:
#line 84 "/sys/src/cmd/eqn/eqn.y"
{ yyval = atoi((char *) yypt[-1].yyv); } break;
case 55:
#line 85 "/sys/src/cmd/eqn/eqn.y"
{ yyval = atoi((char *) yypt[-1].yyv); } break;
case 56:
#line 86 "/sys/src/cmd/eqn/eqn.y"
{ yyval = atoi((char *) yypt[-1].yyv); } break;
case 57:
#line 88 "/sys/src/cmd/eqn/eqn.y"
{ yyval = HAT; } break;
case 58:
#line 89 "/sys/src/cmd/eqn/eqn.y"
{ yyval = VEC; } break;
case 59:
#line 90 "/sys/src/cmd/eqn/eqn.y"
{ yyval = DYAD; } break;
case 60:
#line 91 "/sys/src/cmd/eqn/eqn.y"
{ yyval = BAR; } break;
case 61:
#line 92 "/sys/src/cmd/eqn/eqn.y"
{ yyval = LOWBAR; } break;
case 62:
#line 93 "/sys/src/cmd/eqn/eqn.y"
{ yyval = HIGHBAR; } break;
case 63:
#line 94 "/sys/src/cmd/eqn/eqn.y"
{ yyval = UNDER; } break;
case 64:
#line 95 "/sys/src/cmd/eqn/eqn.y"
{ yyval = DOT; } break;
case 65:
#line 96 "/sys/src/cmd/eqn/eqn.y"
{ yyval = TILDE; } break;
case 66:
#line 97 "/sys/src/cmd/eqn/eqn.y"
{ yyval = UTILDE; } break;
case 67:
#line 98 "/sys/src/cmd/eqn/eqn.y"
{ yyval = DOTDOT; } break;
case 68:
#line 101 "/sys/src/cmd/eqn/eqn.y"
{ yyval = ((char *)yypt[-0].yyv)[0]; } break;
case 69:
#line 102 "/sys/src/cmd/eqn/eqn.y"
{ yyval = '{'; } break;
case 70:
#line 105 "/sys/src/cmd/eqn/eqn.y"
{ yyval = ((char *)yypt[-0].yyv)[0]; } break;
case 71:
#line 106 "/sys/src/cmd/eqn/eqn.y"
{ yyval = '}'; } break;
case 74:
#line 113 "/sys/src/cmd/eqn/eqn.y"
{ column(yypt[-3].yyv, DEFGAP); } break;
case 75:
#line 114 "/sys/src/cmd/eqn/eqn.y"
{yyval=atoi((char*)yypt[-0].yyv);} break;
case 76:
#line 114 "/sys/src/cmd/eqn/eqn.y"
{ column(yypt[-5].yyv, yypt[-3].yyv); } break;
case 77:
#line 117 "/sys/src/cmd/eqn/eqn.y"
{ yyval = startcol(LCOL); } break;
case 78:
#line 118 "/sys/src/cmd/eqn/eqn.y"
{ yyval = startcol(CCOL); } break;
case 79:
#line 119 "/sys/src/cmd/eqn/eqn.y"
{ yyval = startcol(RCOL); } break;
case 80:
#line 120 "/sys/src/cmd/eqn/eqn.y"
{ yyval = startcol(COL); } break;
case 81:
#line 123 "/sys/src/cmd/eqn/eqn.y"
{ lp[ct++] = yypt[-0].yyv; } break;
case 82:
#line 124 "/sys/src/cmd/eqn/eqn.y"
{ lp[ct++] = yypt[-0].yyv; } break;
case 83:
#line 127 "/sys/src/cmd/eqn/eqn.y"
{ yyval = ps; setsize((char *) yypt[-0].yyv); } break;
case 84:
#line 130 "/sys/src/cmd/eqn/eqn.y"
{ static char R[]="R"; setfont(R); } break;
case 85:
#line 131 "/sys/src/cmd/eqn/eqn.y"
{ static char I[]="I"; setfont(I); } break;
case 86:
#line 132 "/sys/src/cmd/eqn/eqn.y"
{ static char B[]="B"; setfont(B); } break;
case 87:
#line 133 "/sys/src/cmd/eqn/eqn.y"
{ setfont((char *)yypt[-0].yyv); } break;
}
goto yystack; /* stack new state and value */
}
