1 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ 2 /* All Rights Reserved */ 3 4 5 /* 6 * Copyright (c) 1980 Regents of the University of California. 7 * All rights reserved. The Berkeley software License Agreement 8 * specifies the terms and conditions for redistribution. 9 */ 10 11 /* 12 * Copyright (c) 1983, 1984 1985, 1986, 1987, 1988, Sun Microsystems, Inc. 13 * All Rights Reserved. 14 */ 15 16 #ident "%Z%%M% %I% %E% SMI" /* SVr4.0 1.1 */ 17 18 # include "e.h" 19 20 fromto(p1, p2, p3) int p1, p2, p3; { 21 int b, h1, b1, pss; 22 yyval = oalloc(); 23 lfont[yyval] = rfont[yyval] = 0; 24 h1 = eht[yyval] = eht[p1]; 25 b1 = ebase[p1]; 26 b = 0; 27 pss = EFFPS(ps); 28 ps += 3; 29 nrwid(p1, ps, p1); 30 printf(".nr %d \\n(%d\n", yyval, p1); 31 if( p2>0 ) { 32 nrwid(p2, pss, p2); 33 printf(".if \\n(%d>\\n(%d .nr %d \\n(%d\n", p2, yyval, yyval, p2); 34 eht[yyval] += eht[p2]; 35 b = eht[p2]; 36 } 37 if( p3>0 ) { 38 nrwid(p3, pss, p3); 39 printf(".if \\n(%d>\\n(%d .nr %d \\n(%d\n", p3, yyval, yyval, p3); 40 eht[yyval] += eht[p3]; 41 } 42 printf(".ds %d ", yyval); /* bottom of middle box */ 43 if( p2>0 ) { 44 printf("\\v'%du'\\h'\\n(%du-\\n(%du/2u'\\s%d\\*(%d\\s%d", 45 eht[p2]-ebase[p2]+b1, yyval, p2, pss, p2, EFFPS(ps)); 46 printf("\\h'-\\n(%du-\\n(%du/2u'\\v'%du'\\\n", 47 yyval, p2, -(eht[p2]-ebase[p2]+b1)); 48 } 49 #ifndef NEQN 50 printf("\\h'\\n(%du-\\n(%du/2u'\\*(%d\\h'\\n(%du-\\n(%du/2u'\\\n", 51 #else NEQN 52 printf("\\h'\\n(%du-\\n(%du/2u'\\*(%d\\h'\\n(%du-\\n(%du+2u/2u'\\\n", 53 #endif NEQN 54 yyval, p1, p1, yyval, p1); 55 if( p3>0 ) { 56 printf("\\v'%du'\\h'-\\n(%du-\\n(%du/2u'\\s%d\\*(%d\\s%d\\h'\\n(%du-\\n(%du/2u'\\v'%du'\\\n", 57 -(h1-b1+ebase[p3]), yyval, p3, pss, p3, EFFPS(ps), yyval, p3, (h1-b1+ebase[p3])); 58 } 59 printf("\n"); 60 ebase[yyval] = b + b1; 61 if(dbg)printf(".\tfrom to: S%d <- %d f %d t %d; h=%d b=%d\n", 62 yyval, p1, p2, p3, eht[yyval], ebase[yyval]); 63 ofree(p1); 64 if( p2>0 ) ofree(p2); 65 if( p3>0 ) ofree(p3); 66 } 67