1 /* 2 * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 3 * Use is subject to license terms. 4 */ 5 6 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ 7 /* All Rights Reserved */ 8 9 /* 10 * Copyright (c) 1980 Regents of the University of California. 11 * All rights reserved. The Berkeley software License Agreement 12 * specifies the terms and conditions for redistribution. 13 */ 14 15 #include "e.h" 16 17 void 18 fromto(int p1, int p2, int p3) 19 { 20 int b, h1, b1, pss; 21 yyval = oalloc(); 22 lfont[yyval] = rfont[yyval] = 0; 23 h1 = eht[yyval] = eht[p1]; 24 b1 = ebase[p1]; 25 b = 0; 26 pss = EFFPS(ps); 27 ps += 3; 28 nrwid(p1, ps, p1); 29 printf(".nr %d \\n(%d\n", yyval, p1); 30 if (p2 > 0) { 31 nrwid(p2, pss, p2); 32 printf(".if \\n(%d>\\n(%d .nr %d \\n(%d\n", 33 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", 40 p3, yyval, yyval, p3); 41 eht[yyval] += eht[p3]; 42 } 43 printf(".ds %d ", yyval); /* bottom of middle box */ 44 if (p2 > 0) { 45 printf("\\v'%du'\\h'\\n(%du-\\n(%du/2u'\\s%d\\*(%d\\s%d", 46 eht[p2]-ebase[p2]+b1, yyval, p2, pss, p2, EFFPS(ps)); 47 printf("\\h'-\\n(%du-\\n(%du/2u'\\v'%du'\\\n", 48 yyval, p2, -(eht[p2]-ebase[p2]+b1)); 49 } 50 #ifndef NEQN 51 printf("\\h'\\n(%du-\\n(%du/2u'\\*(%d\\h'\\n(%du-\\n(%du/2u'\\\n", 52 yyval, p1, p1, yyval, p1); 53 #else /* NEQN */ 54 printf("\\h'\\n(%du-\\n(%du/2u'\\*(%d\\h'\\n(%du-\\n(%du+2u/2u'\\\n", 55 yyval, p1, p1, yyval, p1); 56 #endif /* NEQN */ 57 if (p3 > 0) { 58 printf("\\v'%du'\\h'-\\n(%du-\\n(%du/2u'\\s%d\\*(%d\\s%d" 59 "\\h'\\n(%du-\\n(%du/2u'\\v'%du'\\\n", 60 -(h1-b1+ebase[p3]), yyval, p3, pss, p3, EFFPS(ps), 61 yyval, p3, (h1-b1+ebase[p3])); 62 } 63 printf("\n"); 64 ebase[yyval] = b + b1; 65 if (dbg) 66 printf(".\tfrom to: S%d <- %d f %d t %d; h=%d b=%d\n", 67 yyval, p1, p2, p3, eht[yyval], ebase[yyval]); 68 ofree(p1); 69 if (p2 > 0) ofree(p2); 70 if (p3 > 0) ofree(p3); 71 } 72