void syminit(void) /* initialize symbol table with builtin vars */ { literal0 = setsymtab("0", "0", 0.0, NUM|STR|CON|DONTFREE, symtab); /* this is used for if(x)... tests: */ nullloc = setsymtab("$zero&null", "", 0.0, NUM|STR|CON|DONTFREE, symtab); nullnode = celltonode(nullloc, CCON); fsloc = setsymtab("FS", " ", 0.0, STR|DONTFREE, symtab); FS = &fsloc->sval; RS = &setsymtab("RS", "\n", 0.0, STR|DONTFREE, symtab)->sval; OFS = &setsymtab("OFS", " ", 0.0, STR|DONTFREE, symtab)->sval; ORS = &setsymtab("ORS", "\n", 0.0, STR|DONTFREE, symtab)->sval; OFMT = &setsymtab("OFMT", "%.6g", 0.0, STR|DONTFREE, symtab)->sval; CONVFMT = &setsymtab("CONVFMT", "%.6g", 0.0, STR|DONTFREE, symtab)->sval; FILENAME = &setsymtab("FILENAME", "", 0.0, STR|DONTFREE, symtab)->sval; nfloc = setsymtab("NF", "", 0.0, NUM, symtab); NF = &nfloc->fval; nrloc = setsymtab("NR", "", 0.0, NUM, symtab); NR = &nrloc->fval; fnrloc = setsymtab("FNR", "", 0.0, NUM, symtab); FNR = &fnrloc->fval; SUBSEP = &setsymtab("SUBSEP", "\034", 0.0, STR|DONTFREE, symtab)->sval; rstartloc = setsymtab("RSTART", "", 0.0, NUM, symtab); RSTART = &rstartloc->fval; rlengthloc = setsymtab("RLENGTH", "", 0.0, NUM, symtab); RLENGTH = &rlengthloc->fval; symtabloc = setsymtab("SYMTAB", "", 0.0, ARR, symtab); symtabloc->sval = (char *) symtab; }
Node *rectonode(void) /* make $0 into a Node */ { extern Cell *literal0; return op1(INDIRECT, celltonode(literal0, CUNK)); }