1 #ifndef lint 2 static char sccsid[] = "@(#)fromto.c 4.3 08/11/83"; 3 #endif 4 5 # include "e.h" 6 7 fromto(p1, p2, p3) int p1, p2, p3; { 8 int b, h1, b1, pss; 9 yyval = oalloc(); 10 lfont[yyval] = rfont[yyval] = 0; 11 h1 = eht[yyval] = eht[p1]; 12 b1 = ebase[p1]; 13 b = 0; 14 pss = EFFPS(ps); 15 ps += 3; 16 nrwid(p1, ps, p1); 17 printf(".nr %d \\n(%d\n", yyval, p1); 18 if( p2>0 ) { 19 nrwid(p2, pss, p2); 20 printf(".if \\n(%d>\\n(%d .nr %d \\n(%d\n", p2, yyval, yyval, p2); 21 eht[yyval] += eht[p2]; 22 b = eht[p2]; 23 } 24 if( p3>0 ) { 25 nrwid(p3, pss, p3); 26 printf(".if \\n(%d>\\n(%d .nr %d \\n(%d\n", p3, yyval, yyval, p3); 27 eht[yyval] += eht[p3]; 28 } 29 printf(".ds %d ", yyval); /* bottom of middle box */ 30 if( p2>0 ) { 31 printf("\\v'%du'\\h'\\n(%du-\\n(%du/2u'\\s%d\\*(%d\\s%d", 32 eht[p2]-ebase[p2]+b1, yyval, p2, pss, p2, EFFPS(ps)); 33 printf("\\h'-\\n(%du-\\n(%du/2u'\\v'%du'\\\n", 34 yyval, p2, -(eht[p2]-ebase[p2]+b1)); 35 } 36 #ifndef NEQN 37 printf("\\h'\\n(%du-\\n(%du/2u'\\*(%d\\h'\\n(%du-\\n(%du/2u'\\\n", 38 #else NEQN 39 printf("\\h'\\n(%du-\\n(%du/2u'\\*(%d\\h'\\n(%du-\\n(%du+2u/2u'\\\n", 40 #endif NEQN 41 yyval, p1, p1, yyval, p1); 42 if( p3>0 ) { 43 printf("\\v'%du'\\h'-\\n(%du-\\n(%du/2u'\\s%d\\*(%d\\s%d\\h'\\n(%du-\\n(%du/2u'\\v'%du'\\\n", 44 -(h1-b1+ebase[p3]), yyval, p3, pss, p3, EFFPS(ps), yyval, p3, (h1-b1+ebase[p3])); 45 } 46 printf("\n"); 47 ebase[yyval] = b + b1; 48 if(dbg)printf(".\tfrom to: S%d <- %d f %d t %d; h=%d b=%d\n", 49 yyval, p1, p2, p3, eht[yyval], ebase[yyval]); 50 ofree(p1); 51 if( p2>0 ) ofree(p2); 52 if( p3>0 ) ofree(p3); 53 } 54