1*14485Ssam #ifndef lint 2*14485Ssam static char sccsid[] = "@(#)fromto.c 4.3 08/11/83"; 3*14485Ssam #endif 411003Sshannon 511003Sshannon # include "e.h" 611003Sshannon 711003Sshannon fromto(p1, p2, p3) int p1, p2, p3; { 811003Sshannon int b, h1, b1, pss; 911003Sshannon yyval = oalloc(); 1011003Sshannon lfont[yyval] = rfont[yyval] = 0; 1111003Sshannon h1 = eht[yyval] = eht[p1]; 1211003Sshannon b1 = ebase[p1]; 1311003Sshannon b = 0; 1411003Sshannon pss = EFFPS(ps); 1511003Sshannon ps += 3; 1611003Sshannon nrwid(p1, ps, p1); 1711003Sshannon printf(".nr %d \\n(%d\n", yyval, p1); 1811003Sshannon if( p2>0 ) { 1911003Sshannon nrwid(p2, pss, p2); 2011003Sshannon printf(".if \\n(%d>\\n(%d .nr %d \\n(%d\n", p2, yyval, yyval, p2); 2111003Sshannon eht[yyval] += eht[p2]; 2211003Sshannon b = eht[p2]; 2311003Sshannon } 2411003Sshannon if( p3>0 ) { 2511003Sshannon nrwid(p3, pss, p3); 2611003Sshannon printf(".if \\n(%d>\\n(%d .nr %d \\n(%d\n", p3, yyval, yyval, p3); 2711003Sshannon eht[yyval] += eht[p3]; 2811003Sshannon } 2911003Sshannon printf(".ds %d ", yyval); /* bottom of middle box */ 3011003Sshannon if( p2>0 ) { 3111003Sshannon printf("\\v'%du'\\h'\\n(%du-\\n(%du/2u'\\s%d\\*(%d\\s%d", 3211003Sshannon eht[p2]-ebase[p2]+b1, yyval, p2, pss, p2, EFFPS(ps)); 3311003Sshannon printf("\\h'-\\n(%du-\\n(%du/2u'\\v'%du'\\\n", 3411003Sshannon yyval, p2, -(eht[p2]-ebase[p2]+b1)); 3511003Sshannon } 3611023Sshannon #ifndef NEQN 3711003Sshannon printf("\\h'\\n(%du-\\n(%du/2u'\\*(%d\\h'\\n(%du-\\n(%du/2u'\\\n", 3811023Sshannon #else NEQN 3911023Sshannon printf("\\h'\\n(%du-\\n(%du/2u'\\*(%d\\h'\\n(%du-\\n(%du+2u/2u'\\\n", 4011023Sshannon #endif NEQN 4111003Sshannon yyval, p1, p1, yyval, p1); 4211003Sshannon if( p3>0 ) { 4311003Sshannon printf("\\v'%du'\\h'-\\n(%du-\\n(%du/2u'\\s%d\\*(%d\\s%d\\h'\\n(%du-\\n(%du/2u'\\v'%du'\\\n", 4411003Sshannon -(h1-b1+ebase[p3]), yyval, p3, pss, p3, EFFPS(ps), yyval, p3, (h1-b1+ebase[p3])); 4511003Sshannon } 4611003Sshannon printf("\n"); 4711003Sshannon ebase[yyval] = b + b1; 4811003Sshannon if(dbg)printf(".\tfrom to: S%d <- %d f %d t %d; h=%d b=%d\n", 4911003Sshannon yyval, p1, p2, p3, eht[yyval], ebase[yyval]); 5011003Sshannon ofree(p1); 5111003Sshannon if( p2>0 ) ofree(p2); 5211003Sshannon if( p3>0 ) ofree(p3); 5311003Sshannon } 54