greenplumn cash 源码
greenplumn cash 代码
文件路径：/src/include/utils/cash.h
/*
* 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 64 bit integer.
*/
#ifndef CASH_H
#define CASH_H
#include "fmgr.h"
typedef int64 Cash;
/* Cash is pass-by-reference if and only if int64 is */
#define DatumGetCash(X) ((Cash) DatumGetInt64(X))
#define CashGetDatum(X) Int64GetDatum(X)
#define PG_GETARG_CASH(n) DatumGetCash(PG_GETARG_DATUM(n))
#define PG_RETURN_CASH(x) return CashGetDatum(x)
#endif /* CASH_H */
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