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external/duckdb/third_party/tpce-tool/include/utilities/Money.h

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+/*
+ * Legal Notice
+ *
+ * This document and associated source code (the "Work") is a part of a
+ * benchmark specification maintained by the TPC.
+ *
+ * The TPC reserves all right, title, and interest to the Work as provided
+ * under U.S. and international laws, including without limitation all patent
+ * and trademark rights therein.
+ *
+ * No Warranty
+ *
+ * 1.1 TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, THE INFORMATION
+ *     CONTAINED HEREIN IS PROVIDED "AS IS" AND WITH ALL FAULTS, AND THE
+ *     AUTHORS AND DEVELOPERS OF THE WORK HEREBY DISCLAIM ALL OTHER
+ *     WARRANTIES AND CONDITIONS, EITHER EXPRESS, IMPLIED OR STATUTORY,
+ *     INCLUDING, BUT NOT LIMITED TO, ANY (IF ANY) IMPLIED WARRANTIES,
+ *     DUTIES OR CONDITIONS OF MERCHANTABILITY, OF FITNESS FOR A PARTICULAR
+ *     PURPOSE, OF ACCURACY OR COMPLETENESS OF RESPONSES, OF RESULTS, OF
+ *     WORKMANLIKE EFFORT, OF LACK OF VIRUSES, AND OF LACK OF NEGLIGENCE.
+ *     ALSO, THERE IS NO WARRANTY OR CONDITION OF TITLE, QUIET ENJOYMENT,
+ *     QUIET POSSESSION, CORRESPONDENCE TO DESCRIPTION OR NON-INFRINGEMENT
+ *     WITH REGARD TO THE WORK.
+ * 1.2 IN NO EVENT WILL ANY AUTHOR OR DEVELOPER OF THE WORK BE LIABLE TO
+ *     ANY OTHER PARTY FOR ANY DAMAGES, INCLUDING BUT NOT LIMITED TO THE
+ *     COST OF PROCURING SUBSTITUTE GOODS OR SERVICES, LOST PROFITS, LOSS
+ *     OF USE, LOSS OF DATA, OR ANY INCIDENTAL, CONSEQUENTIAL, DIRECT,
+ *     INDIRECT, OR SPECIAL DAMAGES WHETHER UNDER CONTRACT, TORT, WARRANTY,
+ *     OR OTHERWISE, ARISING IN ANY WAY OUT OF THIS OR ANY OTHER AGREEMENT
+ *     RELATING TO THE WORK, WHETHER OR NOT SUCH AUTHOR OR DEVELOPER HAD
+ *     ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES.
+ *
+ * Contributors
+ * - Sergey Vasilevskiy
+ */
+
+/******************************************************************************
+ *   Description:        Money type that keeps all calculations in integer
+ *                       number of cents. Needed for consistency of initial
+ *                       database population.
+ ******************************************************************************/
+
+#ifndef MONEY_H
+#define MONEY_H
+
+#include "EGenStandardTypes.h"
+
+namespace TPCE {
+
+class CMoney {
+	INT64 m_iAmountInCents; // dollar amount * 100
+
+	// Define binary operators when CMoney is the right operand
+	//
+	friend CMoney operator*(int l_i, CMoney r_m);
+	friend CMoney operator*(double l_f, CMoney r_m);
+	friend double operator/(double l_f, CMoney r_m);
+
+public:
+	// Default constructor - initialize to $0
+	//
+	CMoney() : m_iAmountInCents(0) {
+	}
+
+	// Initialize from another CMoney
+	//
+	CMoney(CMoney *m) : m_iAmountInCents(m->m_iAmountInCents) {
+	}
+
+	// Initialize CMoney from double
+	//
+	CMoney(double fAmount)
+	    : m_iAmountInCents((INT64)(100.0 * fAmount + 0.5)) // round floating-point number correctly
+	{
+	}
+
+	// Return amount in integer dollars and fractional cents e.g. $123.99
+	//
+	double DollarAmount() {
+		return m_iAmountInCents / 100.0;
+	}
+
+	// Return amount in integer cents e.g. 12399
+	INT64 CentsAmount() {
+		return m_iAmountInCents;
+	}
+
+	// Define arithmetic operations on CMoney and CMoney
+	//
+	CMoney operator+(const CMoney &m) {
+		CMoney ret(this);
+
+		ret.m_iAmountInCents += m.m_iAmountInCents;
+
+		return ret;
+	}
+
+	CMoney &operator+=(const CMoney &m) {
+		m_iAmountInCents += m.m_iAmountInCents;
+
+		return *this;
+	}
+
+	CMoney operator-(const CMoney &m) {
+		CMoney ret(this);
+
+		ret.m_iAmountInCents -= m.m_iAmountInCents;
+
+		return ret;
+	}
+
+	CMoney &operator-=(const CMoney &m) {
+		m_iAmountInCents -= m.m_iAmountInCents;
+
+		return *this;
+	}
+
+	CMoney operator*(const CMoney &m) {
+		CMoney ret(this);
+
+		ret.m_iAmountInCents *= m.m_iAmountInCents;
+
+		return ret;
+	}
+
+	CMoney operator/(const CMoney &m) {
+		CMoney ret(this);
+
+		ret.m_iAmountInCents /= m.m_iAmountInCents;
+
+		return ret;
+	}
+
+	// Define arithmetic operations on CMoney and int
+	//
+	CMoney operator*(int i) {
+		CMoney ret(this);
+
+		ret.m_iAmountInCents *= i;
+
+		return ret;
+	}
+
+	// Define arithmetic operations on CMoney and double
+	//
+	CMoney operator+(double f) {
+		CMoney ret(this);
+
+		ret.m_iAmountInCents += (INT64)(100.0 * f + 0.5);
+
+		return ret;
+	}
+
+	CMoney operator-(double f) {
+		CMoney ret(this);
+
+		ret.m_iAmountInCents -= (INT64)(100.0 * f + 0.5);
+
+		return ret;
+	}
+
+	CMoney &operator-=(double f) {
+		m_iAmountInCents -= (INT64)(100.0 * f + 0.5);
+
+		return *this;
+	}
+
+	CMoney operator*(double f) {
+		CMoney ret(this);
+
+		// Do a trick for correct rounding. Can't use ceil or floor functions
+		// because they do not round properly (e.g. down when < 0.5, up when >=
+		// 0.5).
+		//
+		if (ret.m_iAmountInCents > 0) {
+			ret.m_iAmountInCents = (INT64)(ret.m_iAmountInCents * f + 0.5);
+		} else {
+			ret.m_iAmountInCents = (INT64)(ret.m_iAmountInCents * f - 0.5);
+		}
+
+		return ret;
+	}
+
+	CMoney operator/(double f) {
+		CMoney ret(this);
+
+		if (ret.m_iAmountInCents > 0) {
+			ret.m_iAmountInCents = (INT64)(ret.m_iAmountInCents / f + 0.5);
+		} else {
+			ret.m_iAmountInCents = (INT64)(ret.m_iAmountInCents / f - 0.5);
+		}
+
+		return ret;
+	}
+
+	// Assignment of a double (presumed fractional dollar amount e.g. in the
+	// form $123.89)
+	//
+	CMoney &operator=(double f) {
+		m_iAmountInCents = (INT64)(100.0 * f + 0.5);
+
+		return *this;
+	}
+
+	// Comparison operators
+	//
+	bool operator==(const CMoney &m) {
+		return m_iAmountInCents == m.m_iAmountInCents;
+	}
+
+	bool operator>(const CMoney &m) {
+		return m_iAmountInCents > m.m_iAmountInCents;
+	}
+	bool operator>=(const CMoney &m) {
+		return m_iAmountInCents >= m.m_iAmountInCents;
+	}
+
+	bool operator<(const CMoney &m) {
+		return m_iAmountInCents < m.m_iAmountInCents;
+	}
+	bool operator<=(const CMoney &m) {
+		return m_iAmountInCents <= m.m_iAmountInCents;
+	}
+};
+
+} // namespace TPCE
+
+#endif // #ifndef MONEY_H