1*0Sstevel@tonic-gate /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ 2*0Sstevel@tonic-gate /* All Rights Reserved */ 3*0Sstevel@tonic-gate 4*0Sstevel@tonic-gate 5*0Sstevel@tonic-gate /* 6*0Sstevel@tonic-gate * Copyright (c) 1980 Regents of the University of California. 7*0Sstevel@tonic-gate * All rights reserved. The Berkeley software License Agreement 8*0Sstevel@tonic-gate * specifies the terms and conditions for redistribution. 9*0Sstevel@tonic-gate */ 10*0Sstevel@tonic-gate 11*0Sstevel@tonic-gate /* 12*0Sstevel@tonic-gate * Copyright (c) 1983, 1984 1985, 1986, 1987, 1988, Sun Microsystems, Inc. 13*0Sstevel@tonic-gate * All Rights Reserved. 14*0Sstevel@tonic-gate */ 15*0Sstevel@tonic-gate 16*0Sstevel@tonic-gate #ident "%Z%%M% %I% %E% SMI" /* SVr4.0 1.1 */ 17*0Sstevel@tonic-gate 18*0Sstevel@tonic-gate # include "e.h" 19*0Sstevel@tonic-gate #include "e.def" 20*0Sstevel@tonic-gate 21*0Sstevel@tonic-gate bshiftb(p1, dir, p2) int p1, dir, p2; { 22*0Sstevel@tonic-gate int shval, d1, h1, b1, h2, b2; 23*0Sstevel@tonic-gate #ifndef NEQN 24*0Sstevel@tonic-gate int diffps, effps, effps2; 25*0Sstevel@tonic-gate char *sh1, *sh2; 26*0Sstevel@tonic-gate #endif NEQN 27*0Sstevel@tonic-gate 28*0Sstevel@tonic-gate yyval = p1; 29*0Sstevel@tonic-gate h1 = eht[p1]; 30*0Sstevel@tonic-gate b1 = ebase[p1]; 31*0Sstevel@tonic-gate h2 = eht[p2]; 32*0Sstevel@tonic-gate b2 = ebase[p2]; 33*0Sstevel@tonic-gate #ifndef NEQN 34*0Sstevel@tonic-gate effps = EFFPS(ps); 35*0Sstevel@tonic-gate effps2 = EFFPS(ps+deltaps); 36*0Sstevel@tonic-gate diffps = deltaps; 37*0Sstevel@tonic-gate sh1 = sh2 = ""; 38*0Sstevel@tonic-gate #endif NEQN 39*0Sstevel@tonic-gate if( dir == SUB ) { /* subscript */ 40*0Sstevel@tonic-gate #ifndef NEQN 41*0Sstevel@tonic-gate /* top 1/2m above bottom of main box */ 42*0Sstevel@tonic-gate d1 = VERT(EM(0.5, effps2)); 43*0Sstevel@tonic-gate #else NEQN 44*0Sstevel@tonic-gate d1 = VERT(1); 45*0Sstevel@tonic-gate #endif NEQN 46*0Sstevel@tonic-gate shval = - d1 + h2 - b2; 47*0Sstevel@tonic-gate if( d1+b1 > h2 ) /* move little sub down */ 48*0Sstevel@tonic-gate shval = b1-b2; 49*0Sstevel@tonic-gate ebase[yyval] = b1 + max(0, h2-b1-d1); 50*0Sstevel@tonic-gate eht[yyval] = h1 + max(0, h2-b1-d1); 51*0Sstevel@tonic-gate #ifndef NEQN 52*0Sstevel@tonic-gate if (rfont[p1] == ITAL && lfont[p2] == ROM) 53*0Sstevel@tonic-gate sh1 = "\\|"; 54*0Sstevel@tonic-gate if (rfont[p2] == ITAL) 55*0Sstevel@tonic-gate sh2 = "\\|"; 56*0Sstevel@tonic-gate #endif NEQN 57*0Sstevel@tonic-gate } else { /* superscript */ 58*0Sstevel@tonic-gate #ifndef NEQN 59*0Sstevel@tonic-gate /* 4/10 up main box */ 60*0Sstevel@tonic-gate d1 = VERT(EM(0.2, effps)); 61*0Sstevel@tonic-gate #else NEQN 62*0Sstevel@tonic-gate d1 = VERT(1); 63*0Sstevel@tonic-gate #endif NEQN 64*0Sstevel@tonic-gate ebase[yyval] = b1; 65*0Sstevel@tonic-gate #ifndef NEQN 66*0Sstevel@tonic-gate shval = -VERT( (4 * (h1-b1)) / 10 ) - b2; 67*0Sstevel@tonic-gate if( VERT(4*(h1-b1)/10) + h2 < h1-b1 ) /* raise little super */ 68*0Sstevel@tonic-gate #else NEQN 69*0Sstevel@tonic-gate shval = -VERT(1) - b2; 70*0Sstevel@tonic-gate if( VERT(1) + h2 < h1-b1 ) /* raise little super */ 71*0Sstevel@tonic-gate #endif NEQN 72*0Sstevel@tonic-gate shval = -(h1-b1) + h2-b2 - d1; 73*0Sstevel@tonic-gate #ifndef NEQN 74*0Sstevel@tonic-gate eht[yyval] = h1 + max(0, h2-VERT((6*(h1-b1))/10)); 75*0Sstevel@tonic-gate if (rfont[p1] == ITAL) 76*0Sstevel@tonic-gate sh1 = "\\|"; 77*0Sstevel@tonic-gate if (rfont[p2] == ITAL) 78*0Sstevel@tonic-gate sh2 = "\\|"; 79*0Sstevel@tonic-gate #else NEQN 80*0Sstevel@tonic-gate eht[yyval] = h1 + max(0, h2 - VERT(1)); 81*0Sstevel@tonic-gate #endif NEQN 82*0Sstevel@tonic-gate } 83*0Sstevel@tonic-gate if(dbg)printf(".\tb:b shift b: S%d <- S%d vert %d S%d vert %d; b=%d, h=%d\n", 84*0Sstevel@tonic-gate yyval, p1, shval, p2, -shval, ebase[yyval], eht[yyval]); 85*0Sstevel@tonic-gate #ifndef NEQN 86*0Sstevel@tonic-gate printf(".as %d \\v'%du'\\s-%d%s\\*(%d\\s+%d%s\\v'%du'\n", 87*0Sstevel@tonic-gate yyval, shval, diffps, sh1, p2, diffps, sh2, -shval); 88*0Sstevel@tonic-gate ps += deltaps; 89*0Sstevel@tonic-gate if (rfont[p2] == ITAL) 90*0Sstevel@tonic-gate rfont[p1] = 0; 91*0Sstevel@tonic-gate else 92*0Sstevel@tonic-gate rfont[p1] = rfont[p2]; 93*0Sstevel@tonic-gate #else NEQN 94*0Sstevel@tonic-gate printf(".as %d \\v'%du'\\*(%d\\v'%du'\n", 95*0Sstevel@tonic-gate yyval, shval, p2, -shval); 96*0Sstevel@tonic-gate #endif NEQN 97*0Sstevel@tonic-gate ofree(p2); 98*0Sstevel@tonic-gate } 99*0Sstevel@tonic-gate 100*0Sstevel@tonic-gate shift(p1) int p1; { 101*0Sstevel@tonic-gate ps -= deltaps; 102*0Sstevel@tonic-gate yyval = p1; 103*0Sstevel@tonic-gate if(dbg)printf(".\tshift: %d;ps=%d\n", yyval, ps); 104*0Sstevel@tonic-gate } 105*0Sstevel@tonic-gate 106*0Sstevel@tonic-gate shift2(p1, p2, p3) int p1, p2, p3; { 107*0Sstevel@tonic-gate int effps, h1, h2, h3, b1, b2, b3, subsh, d1, d2, supsh, treg; 108*0Sstevel@tonic-gate #ifndef NEQN 109*0Sstevel@tonic-gate int effps2; 110*0Sstevel@tonic-gate #endif NEQN 111*0Sstevel@tonic-gate 112*0Sstevel@tonic-gate treg = oalloc(); 113*0Sstevel@tonic-gate yyval = p1; 114*0Sstevel@tonic-gate if(dbg)printf(".\tshift2 s%d <- %d %d %d\n", yyval, p1, p2, p3); 115*0Sstevel@tonic-gate effps = EFFPS(ps+deltaps); 116*0Sstevel@tonic-gate #ifndef NEQN 117*0Sstevel@tonic-gate eht[p3] = h3 = VERT( (eht[p3] * effps) / EFFPS(ps) ); 118*0Sstevel@tonic-gate ps += deltaps; 119*0Sstevel@tonic-gate effps2 = EFFPS(ps+deltaps); 120*0Sstevel@tonic-gate #endif NEQN 121*0Sstevel@tonic-gate h1 = eht[p1]; b1 = ebase[p1]; 122*0Sstevel@tonic-gate h2 = eht[p2]; b2 = ebase[p2]; 123*0Sstevel@tonic-gate #ifndef NEQN 124*0Sstevel@tonic-gate b3 = ebase[p3]; 125*0Sstevel@tonic-gate d1 = VERT(EM(0.5, effps2)); 126*0Sstevel@tonic-gate #else NEQN 127*0Sstevel@tonic-gate h3 = eht[p3]; b3 = ebase[p3]; 128*0Sstevel@tonic-gate d1 = VERT(1); 129*0Sstevel@tonic-gate #endif NEQN 130*0Sstevel@tonic-gate subsh = -d1+h2-b2; 131*0Sstevel@tonic-gate if( d1+b1 > h2 ) /* move little sub down */ 132*0Sstevel@tonic-gate subsh = b1-b2; 133*0Sstevel@tonic-gate #ifndef NEQN 134*0Sstevel@tonic-gate supsh = -VERT( (4*(h1-b1))/10 ) - b3; 135*0Sstevel@tonic-gate d2 = VERT(EM(0.2, effps)); 136*0Sstevel@tonic-gate if( VERT(4*(h1-b1)/10)+h3 < h1-b1 ) 137*0Sstevel@tonic-gate #else NEQN 138*0Sstevel@tonic-gate supsh = - VERT(1) - b3; 139*0Sstevel@tonic-gate d2 = VERT(1); 140*0Sstevel@tonic-gate if( VERT(1)+h3 < h1-b1 ) 141*0Sstevel@tonic-gate #endif NEQN 142*0Sstevel@tonic-gate supsh = -(h1-b1) + (h3-b3) - d2; 143*0Sstevel@tonic-gate #ifndef NEQN 144*0Sstevel@tonic-gate eht[yyval] = h1 + max(0, h3-VERT( (6*(h1-b1))/10 )) + max(0, h2-b1-d1); 145*0Sstevel@tonic-gate #else NEQN 146*0Sstevel@tonic-gate eht[yyval] = h1 + max(0, h3-VERT(1)) + max(0, h2-b1-d1); 147*0Sstevel@tonic-gate #endif NEQN 148*0Sstevel@tonic-gate ebase[yyval] = b1+max(0, h2-b1-d1); 149*0Sstevel@tonic-gate #ifndef NEQN 150*0Sstevel@tonic-gate if (rfont[p1] == ITAL && lfont[p2] == ROM) 151*0Sstevel@tonic-gate printf(".ds %d \\|\\*(%d\n", p2, p2); 152*0Sstevel@tonic-gate if (rfont[p2] == ITAL) 153*0Sstevel@tonic-gate printf(".as %d \\|\n", p2); 154*0Sstevel@tonic-gate #endif NEQN 155*0Sstevel@tonic-gate nrwid(p2, effps, p2); 156*0Sstevel@tonic-gate #ifndef NEQN 157*0Sstevel@tonic-gate if (rfont[p1] == ITAL && lfont[p3] == ROM) 158*0Sstevel@tonic-gate printf(".ds %d \\|\\|\\*(%d\n", p3, p3); 159*0Sstevel@tonic-gate else 160*0Sstevel@tonic-gate printf(".ds %d \\|\\*(%d\n", p3, p3); 161*0Sstevel@tonic-gate #endif NEQN 162*0Sstevel@tonic-gate nrwid(p3, effps, p3); 163*0Sstevel@tonic-gate printf(".nr %d \\n(%d\n", treg, p3); 164*0Sstevel@tonic-gate printf(".if \\n(%d>\\n(%d .nr %d \\n(%d\n", p2, treg, treg, p2); 165*0Sstevel@tonic-gate #ifndef NEQN 166*0Sstevel@tonic-gate printf(".as %d \\v'%du'\\s%d\\*(%d\\h'-\\n(%du'\\v'%du'\\\n", 167*0Sstevel@tonic-gate p1, subsh, effps, p2, p2, -subsh+supsh); 168*0Sstevel@tonic-gate printf("\\s%d\\*(%d\\h'-\\n(%du+\\n(%du'\\s%d\\v'%du'\n", 169*0Sstevel@tonic-gate effps, p3, p3, treg, effps2, -supsh); 170*0Sstevel@tonic-gate #else NEQN 171*0Sstevel@tonic-gate printf(".as %d \\v'%du'\\*(%d\\h'-\\n(%du'\\v'%du'\\\n", 172*0Sstevel@tonic-gate p1, subsh, p2, p2, -subsh+supsh); 173*0Sstevel@tonic-gate printf("\\*(%d\\h'-\\n(%du+\\n(%du'\\v'%du'\n", 174*0Sstevel@tonic-gate p3, p3, treg, -supsh); 175*0Sstevel@tonic-gate #endif NEQN 176*0Sstevel@tonic-gate ps += deltaps; 177*0Sstevel@tonic-gate #ifndef NEQN 178*0Sstevel@tonic-gate if (rfont[p2] == ITAL) 179*0Sstevel@tonic-gate rfont[yyval] = 0; /* lie */ 180*0Sstevel@tonic-gate #endif NEQN 181*0Sstevel@tonic-gate ofree(p2); ofree(p3); ofree(treg); 182*0Sstevel@tonic-gate } 183