postgresql/src/include/utils/cash.h

/*
 * cash.h
 * Written by D'Arcy J.M. Cain
 *
 * Functions to allow input and output of money normally but store
 *	and handle it as int4.
 */

#ifndef CASH_H
#define CASH_H

/* if we store this as 4 bytes, we better make it int, not long, bjm */
typedef signed int Cash;

extern const char *cash_out(Cash * value);
extern Cash *cash_in(const char *str);

extern bool cash_eq(Cash * c1, Cash * c2);
extern bool cash_ne(Cash * c1, Cash * c2);
extern bool cash_lt(Cash * c1, Cash * c2);
extern bool cash_le(Cash * c1, Cash * c2);
extern bool cash_gt(Cash * c1, Cash * c2);
extern bool cash_ge(Cash * c1, Cash * c2);

extern Cash *cash_pl(Cash * c1, Cash * c2);
extern Cash *cash_mi(Cash * c1, Cash * c2);
extern Cash *cash_mul(Cash * c, float8 * f);
extern Cash *cash_div(Cash * c, float8 * f);

extern Cash *cashlarger(Cash * c1, Cash * c2);
extern Cash *cashsmaller(Cash * c1, Cash * c2);

extern const char *cash_words_out(Cash * value);

#endif							/* CASH_H */