120 lines
3.9 KiB
C#
120 lines
3.9 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: Int32
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**
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**
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** Purpose: A representation of a 32 bit 2's complement
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** integer.
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**
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** Date: July 23, 1998
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**
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===========================================================*/
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namespace System {
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using System;
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using System.Globalization;
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using System.Runtime.CompilerServices;
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using System.Runtime.InteropServices;
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//| <include path='docs/doc[@for="Int32"]/*' />
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[StructLayout(LayoutKind.Sequential)]
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public struct Int32 : IComparable, IFormattable
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{
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internal int m_value;
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//| <include path='docs/doc[@for="Int32.MaxValue"]/*' />
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public const int MaxValue = 0x7fffffff;
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//| <include path='docs/doc[@for="Int32.MinValue"]/*' />
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public const int MinValue = unchecked((int)0x80000000);
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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, equal to zero
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// if this == object, and greater than one 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 Int32, this method throws an ArgumentException.
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//
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//| <include path='docs/doc[@for="Int32.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 Int32) {
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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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int i = (int)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_MustBeInt32");
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}
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//| <include path='docs/doc[@for="Int32.Equals"]/*' />
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public override bool Equals(Object obj) {
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if (!(obj is Int32)) {
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return false;
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}
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return m_value == ((Int32)obj).m_value;
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}
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// The absolute value of the int contained.
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//| <include path='docs/doc[@for="Int32.GetHashCode"]/*' />
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public override int GetHashCode() {
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return m_value;
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}
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//| <include path='docs/doc[@for="Int32.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="Int32.ToString2"]/*' />
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public String ToString(String format) {
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return Number.FormatInt32(m_value, format);
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}
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//| <include path='docs/doc[@for="Int32.Parse"]/*' />
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public static int Parse(String s) {
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return Number.ParseInt32(s, NumberStyles.Integer);
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}
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// Parses an integer from a String in the given style. If
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// a NumberFormatInfo isn't specified, the current culture's
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// NumberFormatInfo is assumed.
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//
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//| <include path='docs/doc[@for="Int32.Parse3"]/*' />
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public static int Parse(String s, NumberStyles style) {
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NumberFormatInfo.ValidateParseStyle(style);
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return Number.ParseInt32(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="Int32.GetTypeCode"]/*' />
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[NoHeapAllocation]
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public override TypeCode GetTypeCode()
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{
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return TypeCode.Int32;
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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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