1 /* fromto.c 4.2 83/02/12 */ 2 3 # include "e.h" 4 5 fromto(p1, p2, p3) int p1, p2, p3; { 6 int b, h1, b1, pss; 7 yyval = oalloc(); 8 lfont[yyval] = rfont[yyval] = 0; 9 h1 = eht[yyval] = eht[p1]; 10 b1 = ebase[p1]; 11 b = 0; 12 pss = EFFPS(ps); 13 ps += 3; 14 nrwid(p1, ps, p1); 15 printf(".nr %d \\n(%d\n", yyval, p1); 16 if( p2>0 ) { 17 nrwid(p2, pss, p2); 18 printf(".if \\n(%d>\\n(%d .nr %d \\n(%d\n", p2, yyval, yyval, p2); 19 eht[yyval] += eht[p2]; 20 b = eht[p2]; 21 } 22 if( p3>0 ) { 23 nrwid(p3, pss, p3); 24 printf(".if \\n(%d>\\n(%d .nr %d \\n(%d\n", p3, yyval, yyval, p3); 25 eht[yyval] += eht[p3]; 26 } 27 printf(".ds %d ", yyval); /* bottom of middle box */ 28 if( p2>0 ) { 29 printf("\\v'%du'\\h'\\n(%du-\\n(%du/2u'\\s%d\\*(%d\\s%d", 30 eht[p2]-ebase[p2]+b1, yyval, p2, pss, p2, EFFPS(ps)); 31 printf("\\h'-\\n(%du-\\n(%du/2u'\\v'%du'\\\n", 32 yyval, p2, -(eht[p2]-ebase[p2]+b1)); 33 } 34 #ifndef NEQN 35 printf("\\h'\\n(%du-\\n(%du/2u'\\*(%d\\h'\\n(%du-\\n(%du/2u'\\\n", 36 #else NEQN 37 printf("\\h'\\n(%du-\\n(%du/2u'\\*(%d\\h'\\n(%du-\\n(%du+2u/2u'\\\n", 38 #endif NEQN 39 yyval, p1, p1, yyval, p1); 40 if( p3>0 ) { 41 printf("\\v'%du'\\h'-\\n(%du-\\n(%du/2u'\\s%d\\*(%d\\s%d\\h'\\n(%du-\\n(%du/2u'\\v'%du'\\\n", 42 -(h1-b1+ebase[p3]), yyval, p3, pss, p3, EFFPS(ps), yyval, p3, (h1-b1+ebase[p3])); 43 } 44 printf("\n"); 45 ebase[yyval] = b + b1; 46 if(dbg)printf(".\tfrom to: S%d <- %d f %d t %d; h=%d b=%d\n", 47 yyval, p1, p2, p3, eht[yyval], ebase[yyval]); 48 ofree(p1); 49 if( p2>0 ) ofree(p2); 50 if( p3>0 ) ofree(p3); 51 } 52