RetroZilla/xpcom/ds/nsInt64.h

418 lines
10 KiB
C
Raw Normal View History

2015-10-21 05:03:22 +02:00
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla 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/MPL/
*
* 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 the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#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".
template<class T>
class nsTInt64
{
public: //XXX should be private
T mValue;
public:
/**
* Construct a new 64-bit integer.
*/
nsTInt64(void) : mValue(LL_ZERO) {
}
/**
* Construct a new 64-bit integer from a 32-bit signed integer
*/
nsTInt64(const PRInt32 aInt32) {
LL_I2L(mValue, aInt32);
}
/**
* Construct a new 64-bit integer from a 32-bit unsigned integer
*/
nsTInt64(const PRUint32 aUint32) {
LL_UI2L(mValue, aUint32);
}
/**
* Construct a new 64-bit integer from a floating point value.
*/
nsTInt64(const PRFloat64 aFloat64) {
LL_D2L(mValue, aFloat64);
}
/**
* Construct a new 64-bit integer from a native 64-bit integer
*/
nsTInt64(const T aInt64) : mValue(aInt64) {
}
/**
* Construct a new 64-bit integer from another 64-bit integer
*/
nsTInt64(const nsTInt64& aObject) : mValue(aObject.mValue) {
}
// ~nsTInt64(void) -- XXX destructor unnecessary
/**
* Assign a 64-bit integer to another 64-bit integer
*/
const nsTInt64& operator =(const nsTInt64& 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 T() const {
return mValue;
}
/**
* Perform unary negation on a 64-bit integer.
*/
const nsTInt64 operator -(void) {
nsTInt64 result;
LL_NEG(result.mValue, mValue);
return result;
}
// Arithmetic operators
/**
* Increment a 64-bit integer by a 64-bit integer amount.
*/
nsTInt64& operator +=(const nsTInt64& aObject) {
LL_ADD(mValue, mValue, aObject.mValue);
return *this;
}
/**
* Decrement a 64-bit integer by a 64-bit integer amount.
*/
nsTInt64& operator -=(const nsTInt64& aObject) {
LL_SUB(mValue, mValue, aObject.mValue);
return *this;
}
/**
* Multiply a 64-bit integer by a 64-bit integer amount.
*/
nsTInt64& operator *=(const nsTInt64& aObject) {
LL_MUL(mValue, mValue, aObject.mValue);
return *this;
}
/**
* Divide a 64-bit integer by a 64-bit integer amount.
*/
nsTInt64& operator /=(const nsTInt64& aObject) {
LL_DIV(mValue, mValue, aObject.mValue);
return *this;
}
/**
* Compute the modulus of a 64-bit integer to a 64-bit value.
*/
nsTInt64& operator %=(const nsTInt64& aObject) {
LL_MOD(mValue, mValue, aObject.mValue);
return *this;
}
/**
* Shift a 64-bit integer left.
*/
nsTInt64& operator <<=(int aCount) {
LL_SHL(mValue, mValue, aCount);
return *this;
}
/**
* Shift a 64-bit signed integer right.
*/
nsTInt64& operator >>=(int aCount) {
LL_SHR(mValue, mValue, aCount);
return *this;
}
// Comparison operators
/**
* Add two 64-bit integers.
*/
inline const nsTInt64
operator +(const nsTInt64& aObject2) const {
return nsTInt64(*this) += aObject2;
}
/**
* Subtract one 64-bit integer from another.
*/
inline const nsTInt64
operator -(const nsTInt64& aObject2) const {
return nsTInt64(*this) -= aObject2;
}
/**
* Multiply two 64-bit integers
*/
inline const nsTInt64
operator *(const nsTInt64& aObject2) const {
return nsTInt64(*this) *= aObject2;
}
/**
* Divide one 64-bit integer by another
*/
inline const nsTInt64
operator /(const nsTInt64& aObject2) const {
return nsTInt64(*this) /= aObject2;
}
/**
* Compute the modulus of two 64-bit integers
*/
inline const nsTInt64
operator %(const nsTInt64& aObject2) const {
return nsTInt64(*this) %= aObject2;
}
/**
* Shift left a 64-bit integer
*/
inline const nsTInt64
operator <<(int aCount) const {
return nsTInt64(*this) <<= aCount;
}
/**
* Shift right a signed 64-bit integer
*/
inline const nsTInt64
operator >>(int aCount) const {
return nsTInt64(*this) >>= aCount;
}
/**
* Determine if two 64-bit integers are equal
*/
inline PRBool
operator ==(const nsTInt64& aObject2) const {
return LL_EQ(mValue, aObject2.mValue);
}
inline PRBool
operator ==(T aValue) const {
return LL_EQ(mValue, aValue);
}
/**
* Determine if two 64-bit integers are not equal
*/
inline PRBool
operator !=(const nsTInt64& aObject2) const {
return LL_NE(mValue, aObject2.mValue);
}
inline PRBool
operator !=(T aValue) const {
return LL_NE(mValue, aValue);
}
/**
* Perform a bitwise AND of two 64-bit integers
*/
inline const nsTInt64
operator &(const nsTInt64& aObject2) const {
return nsTInt64(*this) &= aObject2;
}
/**
* Perform a bitwise OR of two 64-bit integers
*/
inline const nsTInt64
operator |(const nsTInt64& aObject2) const {
return nsTInt64(*this) |= aObject2;
}
/**
* Perform a bitwise XOR of two 64-bit integers
*/
inline const nsTInt64
operator ^(const nsTInt64& aObject2) const {
return nsTInt64(*this) ^= aObject2;
}
// Bitwise operators
/**
* Compute the bitwise NOT of a 64-bit integer
*/
const nsTInt64 operator ~(void) const {
nsTInt64 result;
LL_NOT(result.mValue, mValue);
return result;
}
/**
* Compute the bitwise AND with another 64-bit integer
*/
nsTInt64& operator &=(const nsTInt64& aObject) {
LL_AND(mValue, mValue, aObject.mValue);
return *this;
}
/**
* Compute the bitwise OR with another 64-bit integer
*/
nsTInt64& operator |=(const nsTInt64& aObject) {
LL_OR(mValue, mValue, aObject.mValue);
return *this;
}
/**
* Compute the bitwise XOR with another 64-bit integer
*/
nsTInt64& operator ^=(const nsTInt64& aObject) {
LL_XOR(mValue, mValue, aObject.mValue);
return *this;
}
/**
* Allow doing if (!some_nsInt64)
*/
PRBool operator!() const {
return LL_IS_ZERO(mValue);
}
};
typedef nsTInt64<PRInt64> nsInt64;
typedef nsTInt64<PRUint64> nsUint64;
/**
* 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);
}
inline PRBool
operator >(const nsUint64& aObject1, const nsUint64& aObject2) {
return LL_UCMP(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);
}
inline PRBool
operator >=(const nsUint64& aObject1, const nsUint64& aObject2) {
return ! LL_UCMP(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);
}
inline PRBool
operator <(const nsUint64& aObject1, const nsUint64& aObject2) {
return LL_UCMP(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);
}
inline PRBool
operator <=(const nsUint64& aObject1, const nsUint64& aObject2) {
return ! LL_UCMP(aObject1.mValue, >, aObject2.mValue);
}
#endif // nsInt64_h__