352 lines
13 KiB
C#
352 lines
13 KiB
C#
// ==++==
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//
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// Copyright (c) Microsoft Corporation. All rights reserved.
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//
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// ==--==
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/*============================================================
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**
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** Class: UInt64
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**
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** Purpose: This class will encapsulate an unsigned long and
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** provide an Object representation of it.
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**
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**
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===========================================================*/
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namespace System {
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using System.Globalization;
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using System;
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///#if GENERICS_WORK
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/// using System.Numerics;
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///#endif
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using System.Runtime.InteropServices;
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using System.Diagnostics.Contracts;
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// Wrapper for unsigned 64 bit integers.
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[Serializable]
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[CLSCompliant(false), System.Runtime.InteropServices.StructLayout(LayoutKind.Sequential)]
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[System.Runtime.InteropServices.ComVisible(true)]
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#if GENERICS_WORK
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public struct UInt64 : IComparable, IFormattable, IConvertible
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, IComparable<UInt64>, IEquatable<UInt64>
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/// , IArithmetic<UInt64>
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#else
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public struct UInt64 : IComparable, IFormattable, IConvertible
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#endif
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{
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private ulong m_value;
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public const ulong MaxValue = (ulong) 0xffffffffffffffffL;
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public const ulong MinValue = 0x0;
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// Compares this object to another object, returning an integer that
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// indicates the relationship.
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// Returns a value less than zero if this object
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// null is considered to be less than any instance.
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// If object is not of type UInt64, this method throws an ArgumentException.
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//
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public int CompareTo(Object value) {
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if (value == null) {
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return 1;
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}
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if (value is UInt64) {
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// Need to use compare because subtraction will wrap
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// to positive for very large neg numbers, etc.
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ulong i = (ulong)value;
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if (m_value < i) return -1;
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if (m_value > i) return 1;
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return 0;
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}
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throw new ArgumentException (Environment.GetResourceString("Arg_MustBeUInt64"));
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}
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public int CompareTo(UInt64 value) {
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// Need to use compare because subtraction will wrap
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// to positive for very large neg numbers, etc.
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if (m_value < value) return -1;
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if (m_value > value) return 1;
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return 0;
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}
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public override bool Equals(Object obj) {
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if (!(obj is UInt64)) {
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return false;
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}
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return m_value == ((UInt64)obj).m_value;
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}
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[System.Runtime.Versioning.NonVersionable]
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public bool Equals(UInt64 obj)
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{
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return m_value == obj;
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}
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// The value of the lower 32 bits XORed with the uppper 32 bits.
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public override int GetHashCode() {
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return ((int)m_value) ^ (int)(m_value >> 32);
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}
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[System.Security.SecuritySafeCritical] // auto-generated
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public override String ToString() {
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Contract.Ensures(Contract.Result<String>() != null);
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return Number.FormatUInt64(m_value, null, NumberFormatInfo.CurrentInfo);
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}
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[System.Security.SecuritySafeCritical] // auto-generated
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public String ToString(IFormatProvider provider) {
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Contract.Ensures(Contract.Result<String>() != null);
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return Number.FormatUInt64(m_value, null, NumberFormatInfo.GetInstance(provider));
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}
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[System.Security.SecuritySafeCritical] // auto-generated
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public String ToString(String format) {
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Contract.Ensures(Contract.Result<String>() != null);
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return Number.FormatUInt64(m_value, format, NumberFormatInfo.CurrentInfo);
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}
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[System.Security.SecuritySafeCritical] // auto-generated
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public String ToString(String format, IFormatProvider provider) {
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Contract.Ensures(Contract.Result<String>() != null);
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return Number.FormatUInt64(m_value, format, NumberFormatInfo.GetInstance(provider));
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}
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[CLSCompliant(false)]
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public static ulong Parse(String s) {
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return Number.ParseUInt64(s, NumberStyles.Integer, NumberFormatInfo.CurrentInfo);
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}
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[CLSCompliant(false)]
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public static ulong Parse(String s, NumberStyles style) {
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NumberFormatInfo.ValidateParseStyleInteger(style);
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return Number.ParseUInt64(s, style, NumberFormatInfo.CurrentInfo);
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}
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[CLSCompliant(false)]
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public static ulong Parse(string s, IFormatProvider provider) {
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return Number.ParseUInt64(s, NumberStyles.Integer, NumberFormatInfo.GetInstance(provider));
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}
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[CLSCompliant(false)]
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public static ulong Parse(String s, NumberStyles style, IFormatProvider provider) {
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NumberFormatInfo.ValidateParseStyleInteger(style);
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return Number.ParseUInt64(s, style, NumberFormatInfo.GetInstance(provider));
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}
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[CLSCompliant(false)]
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public static Boolean TryParse(String s, out UInt64 result) {
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return Number.TryParseUInt64(s, NumberStyles.Integer, NumberFormatInfo.CurrentInfo, out result);
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}
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[CLSCompliant(false)]
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public static Boolean TryParse(String s, NumberStyles style, IFormatProvider provider, out UInt64 result) {
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NumberFormatInfo.ValidateParseStyleInteger(style);
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return Number.TryParseUInt64(s, style, NumberFormatInfo.GetInstance(provider), out result);
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}
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//
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// IConvertible implementation
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//
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public TypeCode GetTypeCode() {
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return TypeCode.UInt64;
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}
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/// <internalonly/>
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bool IConvertible.ToBoolean(IFormatProvider provider) {
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return Convert.ToBoolean(m_value);
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}
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/// <internalonly/>
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char IConvertible.ToChar(IFormatProvider provider) {
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return Convert.ToChar(m_value);
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}
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/// <internalonly/>
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sbyte IConvertible.ToSByte(IFormatProvider provider) {
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return Convert.ToSByte(m_value);
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}
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/// <internalonly/>
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byte IConvertible.ToByte(IFormatProvider provider) {
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return Convert.ToByte(m_value);
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}
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/// <internalonly/>
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short IConvertible.ToInt16(IFormatProvider provider) {
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return Convert.ToInt16(m_value);
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}
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/// <internalonly/>
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ushort IConvertible.ToUInt16(IFormatProvider provider) {
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return Convert.ToUInt16(m_value);
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}
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/// <internalonly/>
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int IConvertible.ToInt32(IFormatProvider provider) {
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return Convert.ToInt32(m_value);
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}
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/// <internalonly/>
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uint IConvertible.ToUInt32(IFormatProvider provider) {
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return Convert.ToUInt32(m_value);
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}
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/// <internalonly/>
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long IConvertible.ToInt64(IFormatProvider provider) {
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return Convert.ToInt64(m_value);
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}
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/// <internalonly/>
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ulong IConvertible.ToUInt64(IFormatProvider provider) {
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return m_value;
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}
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/// <internalonly/>
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float IConvertible.ToSingle(IFormatProvider provider) {
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return Convert.ToSingle(m_value);
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}
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/// <internalonly/>
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double IConvertible.ToDouble(IFormatProvider provider) {
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return Convert.ToDouble(m_value);
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}
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/// <internalonly/>
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Decimal IConvertible.ToDecimal(IFormatProvider provider) {
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return Convert.ToDecimal(m_value);
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}
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/// <internalonly/>
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DateTime IConvertible.ToDateTime(IFormatProvider provider) {
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throw new InvalidCastException(Environment.GetResourceString("InvalidCast_FromTo", "UInt64", "DateTime"));
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}
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/// <internalonly/>
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Object IConvertible.ToType(Type type, IFormatProvider provider) {
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return Convert.DefaultToType((IConvertible)this, type, provider);
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}
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///#if GENERICS_WORK
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/// //
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/// // IArithmetic<UInt64> implementation
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/// //
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///
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/// /// <internalonly/>
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/// UInt64 IArithmetic<UInt64>.AbsoluteValue(out bool overflowed) {
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/// overflowed = false;
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/// return m_value;
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/// }
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///
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/// /// <internalonly/>
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/// UInt64 IArithmetic<UInt64>.Negate(out bool overflowed) {
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/// overflowed = (m_value != 0);
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/// return m_value;
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/// }
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///
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/// /// <internalonly/>
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/// UInt64 IArithmetic<UInt64>.Sign(out bool overflowed) {
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/// overflowed = false;
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/// return (UInt64)(m_value > 0 ? 1 : 0);
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/// }
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///
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/// /// <internalonly/>
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/// UInt64 IArithmetic<UInt64>.Add(UInt64 addend, out bool overflowed) {
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/// //
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/// // true arithmetic range check => re-written for unsigned int
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/// // ------------------------------- -------------------------------
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/// // ((m_value + addend) > MaxValue) => (m_value > (MaxValue - addend))
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/// //
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///
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/// overflowed = (m_value > (MaxValue - addend));
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/// return unchecked(m_value + addend);
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/// }
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///
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/// /// <internalonly/>
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/// UInt64 IArithmetic<UInt64>.Subtract(UInt64 subtrahend, out bool overflowed) {
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/// //
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/// // true arithmetic range check => re-written for unsigned int
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/// // ------------------------------- -------------------------------
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/// // ((m_value - subtrahend) < MinValue) => (m_value < (MinValue + subtrahend))
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/// //
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///
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/// overflowed = (m_value < (MinValue + subtrahend));
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/// return unchecked(m_value - subtrahend);
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/// }
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///
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/// /// <internalonly/>
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/// UInt64 IArithmetic<UInt64>.Multiply(UInt64 multiplier, out bool overflowed) {
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/// //
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/// // true arithmetic range check => re-written for unsigned int
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/// // ------------------------------- -------------------------------
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/// // ((m_value * multiplier) > MaxValue) => (multiplier != 0) && (m_value > (MaxValue / multiplier))
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/// //
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///
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/// overflowed = (multiplier != 0) && (m_value > (MaxValue / multiplier));
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/// return unchecked(m_value * multiplier);
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/// }
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///
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///
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/// /// <internalonly/>
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/// UInt64 IArithmetic<UInt64>.Divide(UInt64 divisor, out bool overflowed) {
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/// overflowed = false;
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/// return checked(m_value / divisor); // can throw DivideByZeroException
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/// }
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///
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/// /// <internalonly/>
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/// UInt64 IArithmetic<UInt64>.DivideRemainder(UInt64 divisor, out UInt64 remainder, out bool overflowed) {
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/// overflowed = false;
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/// remainder = (m_value % divisor);
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/// return checked(m_value / divisor); // can throw DivideByZeroException
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/// }
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///
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/// /// <internalonly/>
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/// UInt64 IArithmetic<UInt64>.Remainder(UInt64 divisor, out bool overflowed) {
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/// overflowed = false;
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/// return (m_value % divisor);
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/// }
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///
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/// /// <internalonly/>
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/// ArithmeticDescriptor<UInt64> IArithmetic<UInt64>.GetDescriptor() {
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/// if (s_descriptor == null) {
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/// s_descriptor = new UInt64ArithmeticDescriptor( ArithmeticCapabilities.One
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/// | ArithmeticCapabilities.Zero
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/// | ArithmeticCapabilities.MaxValue
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/// | ArithmeticCapabilities.MinValue
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/// | ArithmeticCapabilities.Unsigned);
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/// }
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/// return s_descriptor;
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/// }
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///
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/// private static UInt64ArithmeticDescriptor s_descriptor;
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///
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/// class UInt64ArithmeticDescriptor : ArithmeticDescriptor<UInt64> {
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/// public UInt64ArithmeticDescriptor(ArithmeticCapabilities capabilities) : base(capabilities) {}
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///
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/// public override UInt64 One {
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/// get {
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/// return (UInt64) 1;
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/// }
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/// }
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///
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/// public override UInt64 Zero {
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/// get {
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/// return (UInt64) 0;
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/// }
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/// }
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///
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/// public override UInt64 MinValue {
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/// get {
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/// return UInt64.MinValue;
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/// }
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/// }
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///
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/// public override UInt64 MaxValue {
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/// get {
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/// return UInt64.MaxValue;
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/// }
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/// }
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/// }
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///#endif // #if GENERICS_WORK
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}
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}
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