1 files changed, 35 insertions, 0 deletions
diff --git a/src/include/utils/cash.h b/src/include/utils/cash.h
new file mode 100644
index 0000000..55d45fa
--- /dev/null
+++ b/src/include/utils/cash.h
@@ -0,0 +1,35 @@
+/*
+ * 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 */
+static inline Cash
+DatumGetCash(Datum X)
+{
+	return DatumGetInt64(X);
+}
+
+static inline Datum
+CashGetDatum(Cash X)
+{
+	return Int64GetDatum(X);
+}
+
+#define PG_GETARG_CASH(n)	DatumGetCash(PG_GETARG_DATUM(n))
+#define PG_RETURN_CASH(x)	return CashGetDatum(x)
+
+#endif							/* CASH_H */