115 lines
3.8 KiB
C#
115 lines
3.8 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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namespace System
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{
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using System.Globalization;
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using System;
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using System.Runtime.CompilerServices;
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using System.Runtime.InteropServices;
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// Wrapper for unsigned 64 bit integers.
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//| <include path='docs/doc[@for="UInt64"]/*' />
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[CLSCompliant(false)]
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[System.Runtime.InteropServices.StructLayout(LayoutKind.Sequential)]
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public struct UInt64 : IComparable, IFormattable
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{
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private ulong m_value;
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//| <include path='docs/doc[@for="UInt64.MaxValue"]/*' />
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public const ulong MaxValue = (ulong) 0xffffffffffffffffL;
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//| <include path='docs/doc[@for="UInt64.MinValue"]/*' />
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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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//| <include path='docs/doc[@for="UInt64.CompareTo"]/*' />
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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 ("Arg_MustBeUInt64");
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}
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//| <include path='docs/doc[@for="UInt64.Equals"]/*' />
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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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// The value of the lower 32 bits XORed with the upper 32 bits.
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//| <include path='docs/doc[@for="UInt64.GetHashCode"]/*' />
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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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//| <include path='docs/doc[@for="UInt64.ToString"]/*' />
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public override String ToString() {
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return ToString(null);
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}
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//| <include path='docs/doc[@for="UInt64.ToString2"]/*' />
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public String ToString(String format) {
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return Number.FormatUInt64(m_value, format);
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}
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//| <include path='docs/doc[@for="UInt64.Parse"]/*' />
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[CLSCompliant(false)]
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public static ulong Parse(String s) {
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return Parse(s, NumberStyles.Integer);
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}
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//| <include path='docs/doc[@for="UInt64.Parse2"]/*' />
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[CLSCompliant(false)]
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public static ulong Parse(String s, NumberStyles style) {
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NumberFormatInfo.ValidateParseStyle(style);
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return Number.ParseUInt64(s, style);
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}
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//
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// IValue implementation
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//
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//| <include path='docs/doc[@for="UInt64.GetTypeCode"]/*' />
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[NoHeapAllocation]
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public override TypeCode GetTypeCode()
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{
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return TypeCode.UInt64;
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}
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//
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// This is just designed to prevent compiler warnings.
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// This field is used from native, but we need to prevent the compiler warnings.
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//
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#if _DEBUG
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private void DontTouchThis() {
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m_value = 0;
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}
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#endif
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}
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}
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