4.3BSD - /usr/src/usr.bin/eqn/matrix.c

   1: #ifndef lint
   2: static char sccsid[] = "@(#)matrix.c	4.2 8/11/83";
   3: #endif
   4: 
   5: #include "e.h"
   6: 
   7: column(type, p1) int type, p1; {
   8:     int i;
   9: 
  10:     lp[p1] = ct - p1 - 1;
  11:     if( dbg ){
  12:         printf(".\t%d column of", type);
  13:         for( i=p1+1; i<ct; i++ )
  14:             printf(" S%d", lp[i]);
  15:         printf(", rows=%d\n",lp[p1]);
  16:     }
  17:     lp[ct++] = type;
  18: }
  19: 
  20: matrix(p1) int p1; {
  21:     int nrow, ncol, i, j, k, hb, b, val[100];
  22:     char *space;
  23: 
  24:     space = "\\ \\ ";
  25:     nrow = lp[p1];  /* disaster if rows inconsistent */
  26:     ncol = 0;
  27:     for( i=p1; i<ct; i += lp[i]+2 ){
  28:         ncol++;
  29:         if(dbg)printf(".\tcolct=%d\n",lp[i]);
  30:     }
  31:     for( k=1; k<=nrow; k++ ) {
  32:         hb = b = 0;
  33:         j = p1 + k;
  34:         for( i=0; i<ncol; i++ ) {
  35:             hb = max(hb, eht[lp[j]]-ebase[lp[j]]);
  36:             b = max(b, ebase[lp[j]]);
  37:             j += nrow + 2;
  38:         }
  39:         if(dbg)printf(".\trow %d: b=%d, hb=%d\n", k, b, hb);
  40:         j = p1 + k;
  41:         for( i=0; i<ncol; i++ ) {
  42:             ebase[lp[j]] = b;
  43:             eht[lp[j]] = b + hb;
  44:             j += nrow + 2;
  45:         }
  46:     }
  47:     j = p1;
  48:     for( i=0; i<ncol; i++ ) {
  49:         lpile(lp[j+lp[j]+1], j+1, j+lp[j]+1);
  50:         val[i] = yyval;
  51:         j += nrow + 2;
  52:     }
  53:     yyval = oalloc();
  54:     eht[yyval] = eht[val[0]];
  55:     ebase[yyval] = ebase[val[0]];
  56:     lfont[yyval] = rfont[yyval] = 0;
  57:     if(dbg)printf(".\tmatrix S%d: r=%d, c=%d, h=%d, b=%d\n",
  58:         yyval,nrow,ncol,eht[yyval],ebase[yyval]);
  59:     printf(".ds %d \"", yyval);
  60:     for( i=0; i<ncol; i++ )  {
  61:         printf("\\*(%d%s", val[i], i==ncol-1 ? "" : space);
  62:         ofree(val[i]);
  63:     }
  64:     printf("\n");
  65:     ct = p1;
  66: }

Defined functions

Defined variables