stack              18 polish.c         unsigned char *stack[MAXNEST][MAXSTACK];/* stack for operators            */
stack              23 polish.c         sp = stack[0];
stack              34 polish.c             if (sp != (unsigned char **) &stack[nest]) {
stack              44 polish.c             while (sp != (unsigned char **) &stack[nest])
stack              54 polish.c             sp = stack[nest];
stack              57 polish.c             while (sp != (unsigned char **) &stack[nest])
stack              76 polish.c         while (sp != (unsigned char **) &stack[nest])