BSD 4_3_Reno development

[unix-history] / usr / src / libexec / pcc / mip / ndu.h

/*      ndu.h   4.2     87/12/10        */

/*
* This file defines the basic tree node data structure for the PCC.
*/

union ndu {
       struct {                /* interior node */
               int     op;
               int     rall;
               TWORD   type;
               int     su;
#ifndef FLEXNAMES
               char    name[NCHNAM];
#else
               char    *name;
               int     stalign;
#endif
               NODE    *left;
               NODE    *right;
       } in;
       struct {                /* terminal node */
               int     op;
               int     rall;
               TWORD   type;
               int     su;
#ifndef FLEXNAMES
               char    name[NCHNAM];
#else
               char    *name;
               int     stalign;
#endif
               CONSZ   lval;
               int     rval;
       } tn;
       struct {                /* branch node */
               int     op;
               int     rall;
               TWORD   type;
               int     su;
               int     label;          /* for use with branching */
       } bn;
       struct {                /* structure node */
               int     op;
               int     rall;
               TWORD   type;
               int     su;
               int     stsize;         /* sizes of structure objects */
               int     stalign;        /* alignment of structure objects */
       } stn;
       struct {                /* front node */
               int     op;
               int     cdim;
               TWORD   type;
               int     csiz;
       } fn;
       /*
        * This structure is used when a double precision
        * floating point constant is being computed
        */
       struct {                        /* DCON node */
               int     op;
               int     cdim;
               TWORD   type;
               int     csiz;
               double  dval;
       } dpn;
       /*
        * This structure is used when a single precision
        * floating point constant is being computed
        */
       struct {                        /* FCON node */
               int     op;
               int     cdim;
               TWORD   type;
               int     csiz;
               float   fval;
       } fpn;
};