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rpn.h
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rpn.h
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/*
* rpn - Mycroft <mycroft@datasphere.net>
*/
#define VERSION 0.51
#define MAXSIZE 10
#define DEFBASE 10
#define BASECHAR '#'
#define ERR_DIVBYZERO "Division by zero."
#define ERR_DOMAIN "Argument is outside of function domain."
#define ERR_UNKNOWNCMD "Unknown command."
#define ERR_ARGC "Too few arguments."
struct metastack {
struct object *t;
struct object *b;
struct metastack *n;
size_t d;
};
struct object {
double num;
struct object *prev, *next;
};
struct command {
char *name;
long numargs;
void (*function)(void);
};
struct macro {
char *name, *operation;
struct macro *prev, *next;
};
void addcommand(struct command *c);
struct object *top(void);
char *findmacro(char *);
double popnum(void);
struct object *pop(void);
struct command *findcmd(char *);
void popobj(struct object *), pushnum(double), init_macros(void), error(char *);
unsigned countstack(void);
double peeknthnum(unsigned off);