Prism User's Guide - CSAIL People - MIT

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Chptr. isaizngDta9
Chapter 5. Wisualizing Data 97
The function should end with
return prism_struct_return();
* void prismadd array (char *fieldname,
int nelements)
Call this for each pointer field in the structure that is really a dynamic
array. fieldname is the name of the pointer field of the structure, and
nelements is the current length of the array pointed to by fieldname.
* void prism addunion (char *unionname,
char *union_element)
Call this for each field of a structure that is of type union. union_name
is the name of the member that is a union. union element is the name
of the field in the union that is currently valid.
An Example
This sample program shows the use of these functions.
struct Graph {
int nlines;
float *lines;
int nvertices;
float *vertices;
};
struct Value {
int type;
};
union {,
int ival;
float fval;
double dval;
} val;
#define INTEGER 0
#define FLOAT 1
#define DOUBLE 2
prism_define_Graph(g)
struct Graph *g;
Version 1.2, March 1993
Copyright ) 1993 Thinking Machines Corporation
/* length of lines array */
/* length of vertices array */
/* gives type of currently valid
union member */