Int16.cs source code in C# .NET

                        Code:
                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / clr / src / BCL / System / Int16.cs / 1305376 / Int16.cs
                        
                        
                            // ==++== 
//
//   Copyright (c) Microsoft Corporation.  All rights reserved.
//
// ==--== 
/*============================================================
** 
** Class:  Int16.cs 
**
** 
** Purpose: This class will encapsulate a short and provide an
**          Object representation of it.
**
** 
===========================================================*/
 
namespace System { 

    using System; 
    using System.Globalization;
///#if GENERICS_WORK
///    using System.Numerics;
///#endif 
    using System.Runtime.InteropServices;
    using System.Diagnostics.Contracts; 
 
[System.Runtime.InteropServices.ComVisible(true)]
[Serializable] 
[System.Runtime.InteropServices.StructLayout(LayoutKind.Sequential)]
#if GENERICS_WORK
    public struct Int16 : IComparable, IFormattable, IConvertible
        , IComparable, IEquatable 
///     , IArithmetic
#if false // ugly hack to fix syntax for TrimSrc parser, which ignores #if directives 
    { 
    }
#endif 
#else
    public struct Int16 : IComparable, IFormattable, IConvertible
#endif
    { 
        internal short m_value;
 
        public const short MaxValue = (short)0x7FFF; 
        public const short MinValue = unchecked((short)0x8000);
 
        // Compares this object to another object, returning an integer that
        // indicates the relationship.
        // Returns a value less than zero if this  object
        // null is considered to be less than any instance. 
        // If object is not of type Int16, this method throws an ArgumentException.
        // 
        public int CompareTo(Object value) { 
            if (value == null) {
                return 1; 
            }

            if (value is Int16) {
                return m_value - ((Int16)value).m_value; 
            }
 
            throw new ArgumentException(Environment.GetResourceString("Arg_MustBeInt16")); 
        }
 
        public int CompareTo(Int16 value) {
            return m_value - value;
        }
 
        public override bool Equals(Object obj) {
            if (!(obj is Int16)) { 
                return false; 
            }
            return m_value == ((Int16)obj).m_value; 
        }

        public bool Equals(Int16 obj)
        { 
            return m_value == obj;
        } 
 
        // Returns a HashCode for the Int16
        public override int GetHashCode() { 
            return ((int)((ushort)m_value) | (((int)m_value) << 16));
        }

 
        [System.Security.SecuritySafeCritical]  // auto-generated
        public override String ToString() { 
            Contract.Ensures(Contract.Result() != null); 
            return Number.FormatInt32(m_value, null, NumberFormatInfo.CurrentInfo);
        } 

        [System.Security.SecuritySafeCritical]  // auto-generated
        public String ToString(IFormatProvider provider) {
            Contract.Ensures(Contract.Result() != null); 
            return Number.FormatInt32(m_value, null, NumberFormatInfo.GetInstance(provider));
        } 
 
        public String ToString(String format) {
            Contract.Ensures(Contract.Result() != null); 
            return ToString(format, NumberFormatInfo.CurrentInfo);
        }

        public String ToString(String format, IFormatProvider provider) { 
            Contract.Ensures(Contract.Result() != null);
            return ToString(format, NumberFormatInfo.GetInstance(provider)); 
        } 

        [System.Security.SecuritySafeCritical]  // auto-generated 
        private String ToString(String format, NumberFormatInfo info) {
            Contract.Ensures(Contract.Result() != null);

            if (m_value<0 && format!=null && format.Length>0 && (format[0]=='X' || format[0]=='x')) { 
                uint temp = (uint)(m_value & 0x0000FFFF);
                return Number.FormatUInt32(temp,format, info); 
            } 
            return Number.FormatInt32(m_value, format, info);
        } 

        public static short Parse(String s) {
            return Parse(s, NumberStyles.Integer, NumberFormatInfo.CurrentInfo);
        } 

        public static short Parse(String s, NumberStyles style) { 
            NumberFormatInfo.ValidateParseStyleInteger(style); 
            return Parse(s, style, NumberFormatInfo.CurrentInfo);
        } 

        public static short Parse(String s, IFormatProvider provider) {
            return Parse(s, NumberStyles.Integer, NumberFormatInfo.GetInstance(provider));
        } 

        public static short Parse(String s, NumberStyles style, IFormatProvider provider) { 
            NumberFormatInfo.ValidateParseStyleInteger(style); 
            return Parse(s, style, NumberFormatInfo.GetInstance(provider));
        } 

        private static short Parse(String s, NumberStyles style, NumberFormatInfo info) {

            int i = 0; 
            try {
                i = Number.ParseInt32(s, style, info); 
            } 
            catch(OverflowException e) {
                throw new OverflowException(Environment.GetResourceString("Overflow_Int16"), e); 
            }

            // We need this check here since we don't allow signs to specified in hex numbers. So we fixup the result
            // for negative numbers 
            if ((style & NumberStyles.AllowHexSpecifier) != 0) { // We are parsing a hexadecimal number
                if ((i < 0) || (i > UInt16.MaxValue)) { 
                    throw new OverflowException(Environment.GetResourceString("Overflow_Int16")); 
                }
                return (short)i; 
            }

            if (i < MinValue || i > MaxValue) throw new OverflowException(Environment.GetResourceString("Overflow_Int16"));
            return (short)i; 
        }
 
        public static bool TryParse(String s, out Int16 result) { 
            return TryParse(s, NumberStyles.Integer, NumberFormatInfo.CurrentInfo, out result);
        } 

        public static bool TryParse(String s, NumberStyles style, IFormatProvider provider, out Int16 result) {
            NumberFormatInfo.ValidateParseStyleInteger(style);
            return TryParse(s, style, NumberFormatInfo.GetInstance(provider), out result); 
        }
 
        private static bool TryParse(String s, NumberStyles style, NumberFormatInfo info, out Int16 result) { 

            result = 0; 
            int i;
            if (!Number.TryParseInt32(s, style, info, out i)) {
                return false;
            } 

            // We need this check here since we don't allow signs to specified in hex numbers. So we fixup the result 
            // for negative numbers 
            if ((style & NumberStyles.AllowHexSpecifier) != 0) { // We are parsing a hexadecimal number
                if ((i < 0) || i > UInt16.MaxValue) { 
                    return false;
                }
                result = (Int16) i;
                return true; 
            }
 
            if (i < MinValue || i > MaxValue) { 
                return false;
            } 
            result = (Int16) i;
            return true;
        }
 
        //
        // IConvertible implementation 
        // 

        public TypeCode GetTypeCode() { 
            return TypeCode.Int16;
        }

 
        /// 
        bool IConvertible.ToBoolean(IFormatProvider provider) { 
            return Convert.ToBoolean(m_value); 
        }
 
        /// 
        char IConvertible.ToChar(IFormatProvider provider) {
            return Convert.ToChar(m_value);
        } 

        ///  
        sbyte IConvertible.ToSByte(IFormatProvider provider) { 
            return Convert.ToSByte(m_value);
        } 

        /// 
        byte IConvertible.ToByte(IFormatProvider provider) {
            return Convert.ToByte(m_value); 
        }
 
        ///  
        short IConvertible.ToInt16(IFormatProvider provider) {
            return m_value; 
        }

        /// 
        ushort IConvertible.ToUInt16(IFormatProvider provider) { 
            return Convert.ToUInt16(m_value);
        } 
 
        /// 
        int IConvertible.ToInt32(IFormatProvider provider) { 
            return Convert.ToInt32(m_value);
        }

        ///  
        uint IConvertible.ToUInt32(IFormatProvider provider) {
            return Convert.ToUInt32(m_value); 
        } 

        ///  
        long IConvertible.ToInt64(IFormatProvider provider) {
            return Convert.ToInt64(m_value);
        }
 
        /// 
        ulong IConvertible.ToUInt64(IFormatProvider provider) { 
            return Convert.ToUInt64(m_value); 
        }
 
        /// 
        float IConvertible.ToSingle(IFormatProvider provider) {
            return Convert.ToSingle(m_value);
        } 

        ///  
        double IConvertible.ToDouble(IFormatProvider provider) { 
            return Convert.ToDouble(m_value);
        } 

        /// 
        Decimal IConvertible.ToDecimal(IFormatProvider provider) {
            return Convert.ToDecimal(m_value); 
        }
 
        ///  
        DateTime IConvertible.ToDateTime(IFormatProvider provider) {
            throw new InvalidCastException(Environment.GetResourceString("InvalidCast_FromTo", "Int16", "DateTime")); 
        }

        /// 
        Object IConvertible.ToType(Type type, IFormatProvider provider) { 
            return Convert.DefaultToType((IConvertible)this, type, provider);
        } 
 
///#if GENERICS_WORK
///        // 
///        // IArithmetic implementation
///        //
///
///        ///  
///        Int16 IArithmetic.AbsoluteValue(out bool overflowed) {
///            overflowed = (m_value == MinValue);  // -m_value overflows 
///            return (Int16) (m_value < 0 ? -m_value : m_value); 
///        }
/// 
///        /// 
///        Int16 IArithmetic.Negate(out bool overflowed) {
///            overflowed = (m_value == MinValue); // Negate(MinValue) overflows
///            return (Int16) (-m_value); 
///        }
/// 
///        ///  
///        Int16 IArithmetic.Sign(out bool overflowed) {
///            overflowed = false; 
///            return (Int16) (m_value >= 0 ? (m_value == 0 ? 0 : 1) : -1);
///        }
///
///        ///  
///        Int16 IArithmetic.Add(Int16 addend, out bool overflowed) {
///            int i = ((int)m_value) + addend; 
///            overflowed = (i > MaxValue || i < MinValue); 
///            return (Int16) i;
///        } 
///
///        /// 
///        Int16 IArithmetic.Subtract(Int16 subtrahend, out bool overflowed) {
///            int i = ((int)m_value)- subtrahend; 
///            overflowed = (i > MaxValue || i < MinValue);
///            return (Int16) i; 
///        } 
///
///        ///  
///        Int16 IArithmetic.Multiply(Int16 multiplier, out bool overflowed) {
///            long l = ((long)m_value) * multiplier;
///            overflowed = (l > MaxValue || l < MinValue);
///            return (Int16) l; 
///        }
/// 
/// 
///        /// 
///        Int16 IArithmetic.Divide(Int16 divisor, out bool overflowed) { 
///            // signed integer division can overflow.  Consider the following
///            // 8-bit case: -128/-1 = 128.
///            // 128 won't fit into a signed 8-bit integer, instead you will end up
///            // with -128. 
///            //
///            // Because of this corner case, we must check if the numerator 
///            // is MinValue and if the denominator is -1. 
///
///            overflowed = (divisor == -1 && m_value == MinValue); 
///            return (Int16) unchecked(m_value / divisor);
///        }
///
///        ///  
///        Int16 IArithmetic.DivideRemainder(Int16 divisor, out Int16 remainder, out bool overflowed) {
///            remainder = (Int16) (m_value % divisor); 
///            overflowed = (divisor == -1 && m_value == MinValue); 
///            return (Int16) unchecked(m_value / divisor);
///        } 
///
///        /// 
///        Int16 IArithmetic.Remainder(Int16 divisor, out bool overflowed) {
///            overflowed = false; 
///            return (Int16) (m_value % divisor);
///        } 
/// 
///        /// 
///        ArithmeticDescriptor IArithmetic.GetDescriptor() { 
///            if (s_descriptor == null) {
///                s_descriptor = new Int16ArithmeticDescriptor( ArithmeticCapabilities.One
///                                                             | ArithmeticCapabilities.Zero
///                                                             | ArithmeticCapabilities.MaxValue 
///                                                             | ArithmeticCapabilities.MinValue);
///            } 
///            return s_descriptor; 
///        }
/// 
///        private static Int16ArithmeticDescriptor s_descriptor;
///
///        class Int16ArithmeticDescriptor : ArithmeticDescriptor {
///            public Int16ArithmeticDescriptor(ArithmeticCapabilities capabilities) : base(capabilities) {} 
///
///            public override Int16 One { 
///                get { 
///                    return (Int16) 1;
///                } 
///            }
///
///            public override Int16 Zero {
///                get { 
///                    return (Int16) 0;
///                } 
///            } 
///
///            public override Int16 MinValue { 
///                get {
///                    return Int16.MinValue;
///                }
///            } 
///
///            public override Int16 MaxValue { 
///                get { 
///                    return Int16.MaxValue;
///                } 
///            }
///        }
///#endif // #if GENERICS_WORK
 

    } 
} 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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Int16.cs source code in C# .NET

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