gecko-dev/xpcom/ds/nsInt64.h

337 lines
8.4 KiB
C++

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* The contents of this file are subject to the Netscape Public
* License Version 1.1 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.mozilla.org/NPL/
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
*/
#ifndef nsInt64_h__
#define nsInt64_h__
#include "prlong.h"
#include "nscore.h"
/**
* This class encapsulates full 64-bit integer functionality and
* provides simple arithmetic and conversion operations.
*/
// If you ever decide that you need to add a non-inline method to this
// class, be sure to change the class declaration to "class NS_BASE
// nsInt64".
class nsInt64
{
public: //XXX should be private
PRInt64 mValue;
public:
/**
* Construct a new 64-bit integer.
*/
nsInt64(void) : mValue(LL_ZERO) {
}
/**
* Construct a new 64-bit integer from a 32-bit signed integer
*/
nsInt64(const PRInt32 aInt32) {
LL_I2L(mValue, aInt32);
}
/**
* Construct a new 64-bit integer from a 32-bit unsigned integer
*/
nsInt64(const PRUint32 aUint32) {
LL_UI2L(mValue, aUint32);
}
/**
* Construct a new 64-bit integer from a floating point value.
*/
nsInt64(const PRFloat64 aFloat64) {
LL_D2L(mValue, aFloat64);
}
/**
* Construct a new 64-bit integer from a native 64-bit integer
*/
nsInt64(const PRInt64 aInt64) : mValue(aInt64) {
}
/**
* Construct a new 64-bit integer from another 64-bit integer
*/
nsInt64(const nsInt64& aObject) : mValue(aObject.mValue) {
}
// ~nsInt64(void) -- XXX destructor unnecessary
/**
* Assign a 64-bit integer to another 64-bit integer
*/
const nsInt64& operator =(const nsInt64& aObject) {
mValue = aObject.mValue;
return *this;
}
/**
* Convert a 64-bit integer to a signed 32-bit value
*/
operator PRInt32(void) const {
PRInt32 result;
LL_L2I(result, mValue);
return result;
}
/**
* Convert a 64-bit integer to an unsigned 32-bit value
*/
operator PRUint32(void) const {
PRUint32 result;
LL_L2UI(result, mValue);
return result;
}
/**
* Convert a 64-bit integer to a floating point value
*/
operator PRFloat64(void) const {
PRFloat64 result;
LL_L2D(result, mValue);
return result;
}
/**
* Convert a 64-bit integer to a native 64-bit integer.
*/
operator PRInt64(void) const {
return mValue;
}
/**
* Perform unary negation on a 64-bit integer.
*/
const nsInt64 operator -(void) {
nsInt64 result;
LL_NEG(result.mValue, mValue);
return result;
}
// Arithmetic operators
/**
* Increment a 64-bit integer by a 64-bit integer amount.
*/
nsInt64& operator +=(const nsInt64& aObject) {
LL_ADD(mValue, mValue, aObject.mValue);
return *this;
}
/**
* Decrement a 64-bit integer by a 64-bit integer amount.
*/
nsInt64& operator -=(const nsInt64& aObject) {
LL_SUB(mValue, mValue, aObject.mValue);
return *this;
}
/**
* Multiply a 64-bit integer by a 64-bit integer amount.
*/
nsInt64& operator *=(const nsInt64& aObject) {
LL_MUL(mValue, mValue, aObject.mValue);
return *this;
}
/**
* Divide a 64-bit integer by a 64-bit integer amount.
*/
nsInt64& operator /=(const nsInt64& aObject) {
LL_DIV(mValue, mValue, aObject.mValue);
return *this;
}
/**
* Compute the modulus of a 64-bit integer to a 64-bit value.
*/
nsInt64& operator %=(const nsInt64& aObject) {
LL_MOD(mValue, mValue, aObject.mValue);
return *this;
}
// Comparison operators
friend inline PRBool operator ==(const nsInt64& aObject1, const nsInt64& aObject2);
friend inline PRBool operator !=(const nsInt64& aObject1, const nsInt64& aObject2);
friend inline PRBool operator >(const nsInt64& aObject1, const nsInt64& aObject2);
friend inline PRBool operator >=(const nsInt64& aObject1, const nsInt64& aObject2);
friend inline PRBool operator <(const nsInt64& aObject1, const nsInt64& aObject2);
friend inline PRBool operator <=(const nsInt64& aObject1, const nsInt64& aObject2);
// Bitwise operators
/**
* Compute the bitwise NOT of a 64-bit integer
*/
const nsInt64 operator ~(void) {
nsInt64 result;
LL_NOT(result.mValue, mValue);
return result;
}
/**
* Compute the bitwise AND with another 64-bit integer
*/
nsInt64& operator &=(const nsInt64& aObject) {
LL_AND(mValue, mValue, aObject.mValue);
return *this;
}
/**
* Compute the bitwise OR with another 64-bit integer
*/
nsInt64& operator |=(const nsInt64& aObject) {
LL_OR(mValue, mValue, aObject.mValue);
return *this;
}
/**
* Compute the bitwise XOR with another 64-bit integer
*/
nsInt64& operator ^=(const nsInt64& aObject) {
LL_XOR(mValue, mValue, aObject.mValue);
return *this;
}
};
/**
* Add two 64-bit integers.
*/
inline const nsInt64
operator +(const nsInt64& aObject1, const nsInt64& aObject2) {
return nsInt64(aObject1) += aObject2;
}
/**
* Subtract one 64-bit integer from another.
*/
inline const nsInt64
operator -(const nsInt64& aObject1, const nsInt64& aObject2) {
return nsInt64(aObject1) -= aObject2;
}
/**
* Multiply two 64-bit integers
*/
inline const nsInt64
operator *(const nsInt64& aObject1, const nsInt64& aObject2) {
return nsInt64(aObject1) *= aObject2;
}
/**
* Divide one 64-bit integer by another
*/
inline const nsInt64
operator /(const nsInt64& aObject1, const nsInt64& aObject2) {
return nsInt64(aObject1) /= aObject2;
}
/**
* Compute the modulus of two 64-bit integers
*/
inline const nsInt64
operator %(const nsInt64& aObject1, const nsInt64& aObject2) {
return nsInt64(aObject1) %= aObject2;
}
/**
* Determine if two 64-bit integers are equal
*/
inline PRBool
operator ==(const nsInt64& aObject1, const nsInt64& aObject2) {
return LL_EQ(aObject1.mValue, aObject2.mValue);
}
/**
* Determine if two 64-bit integers are not equal
*/
inline PRBool
operator !=(const nsInt64& aObject1, const nsInt64& aObject2) {
return LL_NE(aObject1.mValue, aObject2.mValue);
}
/**
* Determine if one 64-bit integer is strictly greater than another, using signed values
*/
inline PRBool
operator >(const nsInt64& aObject1, const nsInt64& aObject2) {
return LL_CMP(aObject1.mValue, >, aObject2.mValue);
}
/**
* Determine if one 64-bit integer is greater than or equal to another, using signed values
*/
inline PRBool
operator >=(const nsInt64& aObject1, const nsInt64& aObject2) {
return ! LL_CMP(aObject1.mValue, <, aObject2.mValue);
}
/**
* Determine if one 64-bit integer is strictly less than another, using signed values
*/
inline PRBool
operator <(const nsInt64& aObject1, const nsInt64& aObject2) {
return LL_CMP(aObject1.mValue, <, aObject2.mValue);
}
/**
* Determine if one 64-bit integers is less than or equal to another, using signed values
*/
inline PRBool
operator <=(const nsInt64& aObject1, const nsInt64& aObject2) {
return ! LL_CMP(aObject1.mValue, >, aObject2.mValue);
}
/**
* Perform a bitwise AND of two 64-bit integers
*/
inline const nsInt64
operator &(const nsInt64& aObject1, const nsInt64& aObject2) {
return nsInt64(aObject1) &= aObject2;
}
/**
* Perform a bitwise OR of two 64-bit integers
*/
inline const nsInt64
operator |(const nsInt64& aObject1, const nsInt64& aObject2) {
return nsInt64(aObject1) |= aObject2;
}
/**
* Perform a bitwise XOR of two 64-bit integers
*/
inline const nsInt64
operator ^(const nsInt64& aObject1, const nsInt64& aObject2) {
return nsInt64(aObject1) ^= aObject2;
}
#endif // nsInt64_h__