1*11003Sshannon /* fromto.c 4.1 83/02/11 */ 2*11003Sshannon 3*11003Sshannon # include "e.h" 4*11003Sshannon 5*11003Sshannon fromto(p1, p2, p3) int p1, p2, p3; { 6*11003Sshannon int b, h1, b1, pss; 7*11003Sshannon yyval = oalloc(); 8*11003Sshannon lfont[yyval] = rfont[yyval] = 0; 9*11003Sshannon h1 = eht[yyval] = eht[p1]; 10*11003Sshannon b1 = ebase[p1]; 11*11003Sshannon b = 0; 12*11003Sshannon pss = EFFPS(ps); 13*11003Sshannon ps += 3; 14*11003Sshannon nrwid(p1, ps, p1); 15*11003Sshannon printf(".nr %d \\n(%d\n", yyval, p1); 16*11003Sshannon if( p2>0 ) { 17*11003Sshannon nrwid(p2, pss, p2); 18*11003Sshannon printf(".if \\n(%d>\\n(%d .nr %d \\n(%d\n", p2, yyval, yyval, p2); 19*11003Sshannon eht[yyval] += eht[p2]; 20*11003Sshannon b = eht[p2]; 21*11003Sshannon } 22*11003Sshannon if( p3>0 ) { 23*11003Sshannon nrwid(p3, pss, p3); 24*11003Sshannon printf(".if \\n(%d>\\n(%d .nr %d \\n(%d\n", p3, yyval, yyval, p3); 25*11003Sshannon eht[yyval] += eht[p3]; 26*11003Sshannon } 27*11003Sshannon printf(".ds %d ", yyval); /* bottom of middle box */ 28*11003Sshannon if( p2>0 ) { 29*11003Sshannon printf("\\v'%du'\\h'\\n(%du-\\n(%du/2u'\\s%d\\*(%d\\s%d", 30*11003Sshannon eht[p2]-ebase[p2]+b1, yyval, p2, pss, p2, EFFPS(ps)); 31*11003Sshannon printf("\\h'-\\n(%du-\\n(%du/2u'\\v'%du'\\\n", 32*11003Sshannon yyval, p2, -(eht[p2]-ebase[p2]+b1)); 33*11003Sshannon } 34*11003Sshannon printf("\\h'\\n(%du-\\n(%du/2u'\\*(%d\\h'\\n(%du-\\n(%du/2u'\\\n", 35*11003Sshannon yyval, p1, p1, yyval, p1); 36*11003Sshannon if( p3>0 ) { 37*11003Sshannon printf("\\v'%du'\\h'-\\n(%du-\\n(%du/2u'\\s%d\\*(%d\\s%d\\h'\\n(%du-\\n(%du/2u'\\v'%du'\\\n", 38*11003Sshannon -(h1-b1+ebase[p3]), yyval, p3, pss, p3, EFFPS(ps), yyval, p3, (h1-b1+ebase[p3])); 39*11003Sshannon } 40*11003Sshannon printf("\n"); 41*11003Sshannon ebase[yyval] = b + b1; 42*11003Sshannon if(dbg)printf(".\tfrom to: S%d <- %d f %d t %d; h=%d b=%d\n", 43*11003Sshannon yyval, p1, p2, p3, eht[yyval], ebase[yyval]); 44*11003Sshannon ofree(p1); 45*11003Sshannon if( p2>0 ) ofree(p2); 46*11003Sshannon if( p3>0 ) ofree(p3); 47*11003Sshannon } 48