1 files changed, 80 insertions, 0 deletions
diff --git a/usr.bin/dc/bcode.h b/usr.bin/dc/bcode.h
new file mode 100644
index 00000000000..a9eceafdb55
--- /dev/null
+++ b/usr.bin/dc/bcode.h
@@ -0,0 +1,80 @@
+#include <sys/types.h>
+#include <ssl/bn.h>
+
+
+struct number {
+	BIGNUM	*number;
+	u_int	scale;
+};
+
+enum stacktype {
+	BCODE_NONE,
+	BCODE_NUMBER,
+	BCODE_STRING
+};
+
+enum bcode_compare {
+	BCODE_EQUAL,
+	BCODE_NOT_EQUAL,
+	BCODE_LESS,
+	BCODE_NOT_LESS,
+	BCODE_GREATER,
+	BCODE_NOT_GREATER
+};
+
+struct array;
+
+struct value {
+	union {
+		struct number	*num;
+		char		*string;
+	} u;
+	struct array	*array;
+	enum stacktype	type;
+};
+
+struct array {
+	struct value	*data;
+	size_t		size;
+};
+
+struct stack {
+	struct value	*stack;
+	int		sp;
+	int		size;
+};
+
+struct source;
+
+struct vtable {
+	int	(*readchar)(struct source *);
+	int	(*unreadchar)(struct source *);
+	char	*(*readline)(struct source *);
+	void	(*free)(struct source *);
+};
+
+struct source {
+	struct vtable	*vtable;
+	union {
+			FILE *stream;
+			struct {
+				u_char *buf;
+				size_t pos;
+			} string;
+	} u;
+	int		lastchar;
+};
+
+void			init_bmachine(void);
+void			reset_bmachine(struct source *);
+void			scale_number(BIGNUM *, int);
+void			normalize(struct number *, u_int);
+void			eval(void);
+void			pn(const char *, const struct number *);
+void			pbn(const char *, const BIGNUM *);
+void			negate(struct number *);
+void			split_number(const struct number *, BIGNUM *, BIGNUM *);
+void			bmul_number(struct number *, struct number *,
+			    struct number *);
+
+extern BIGNUM		zero;