mcs/class/Mono.Data.TdsClient/Mono.Data.TdsTypes/TdsDouble.cs

   1 //
   2 // Mono.Data.TdsTypes.TdsDouble
   3 //
   4 // Author:
   5 //   Tim Coleman <tim@timcoleman.com>
   6 //
   7 // (C) Copyright Tim Coleman, 2002
   8 //
   9
  10 //
  11 // Permission is hereby granted, free of charge, to any person obtaining
  12 // a copy of this software and associated documentation files (the
  13 // "Software"), to deal in the Software without restriction, including
  14 // without limitation the rights to use, copy, modify, merge, publish,
  15 // distribute, sublicense, and/or sell copies of the Software, and to
  16 // permit persons to whom the Software is furnished to do so, subject to
  17 // the following conditions:
  18 //
  19 // The above copyright notice and this permission notice shall be
  20 // included in all copies or substantial portions of the Software.
  21 //
  22 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  23 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  24 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  25 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  26 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  27 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  28 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  29 //
  30
  31 using Mono.Data.TdsClient;
  32 using System;
  33 using System.Data.SqlTypes;
  34 using System.Globalization;
  35
  36 namespace Mono.Data.TdsTypes {
  37         public struct TdsDouble : INullable, IComparable
  38         {
  39                 #region Fields
  40                 double value;
  41
  42                 private bool notNull;
  43
  44                 public static readonly TdsDouble MaxValue = new TdsDouble (1.7976931348623157e308);
  45                 public static readonly TdsDouble MinValue = new TdsDouble (-1.7976931348623157e308);
  46                 public static readonly TdsDouble Null;
  47                 public static readonly TdsDouble Zero = new TdsDouble (0);
  48
  49                 #endregion
  50
  51                 #region Constructors
  52
  53                 public TdsDouble (double value)
  54                 {
  55                         this.value = value;
  56                         notNull = true;
  57                 }
  58
  59                 #endregion
  60
  61                 #region Properties
  62
  63                 public bool IsNull {
  64                         get { return !notNull; }
  65                 }
  66
  67                 public double Value {
  68                         get {
  69                                 if (this.IsNull)
  70                                         throw new TdsNullValueException ();
  71                                 else
  72                                         return value;
  73                         }
  74                 }
  75
  76                 #endregion
  77
  78                 #region Methods
  79
  80                 public static TdsDouble Add (TdsDouble x, TdsDouble y)
  81                 {
  82                         return (x + y);
  83                 }
  84
  85                 public int CompareTo (object value)
  86                 {
  87                         if (value == null)
  88                                 return 1;
  89                         else if (!(value is TdsDouble))
  90                                 throw new ArgumentException (Locale.GetText ("Value is not a System.Data.TdsTypes.TdsDouble"));
  91                         else if (((TdsDouble)value).IsNull)
  92                                 return 1;
  93                         else
  94                                 return this.value.CompareTo (((TdsDouble)value).Value);
  95                 }
  96
  97                 public static TdsDouble Divide (TdsDouble x, TdsDouble y)
  98                 {
  99                         return (x / y);
 100                 }
 101
 102                 public override bool Equals (object value)
 103                 {
 104                         if (!(value is TdsDouble))
 105                                 return false;
 106                         else
 107                                 return (bool) (this == (TdsDouble)value);
 108                 }
 109
 110                 public static TdsBoolean Equals (TdsDouble x, TdsDouble y)
 111                 {
 112                         return (x == y);
 113                 }
 114
 115                 public override int GetHashCode ()
 116                 {
 117                         long LongValue = (long)value;
 118                         return (int)(LongValue ^ (LongValue >> 32));
 119
 120                 }
 121
 122                 public static TdsBoolean GreaterThan (TdsDouble x, TdsDouble y)
 123                 {
 124                         return (x > y);
 125                 }
 126
 127                 public static TdsBoolean GreaterThanOrEqual (TdsDouble x, TdsDouble y)
 128                 {
 129                         return (x >= y);
 130                 }
 131
 132                 public static TdsBoolean LessThan (TdsDouble x, TdsDouble y)
 133                 {
 134                         return (x < y);
 135                 }
 136
 137                 public static TdsBoolean LessThanOrEqual (TdsDouble x, TdsDouble y)
 138                 {
 139                         return (x <= y);
 140                 }
 141
 142                 public static TdsDouble Multiply (TdsDouble x, TdsDouble y)
 143                 {
 144                         return (x * y);
 145                 }
 146
 147                 public static TdsBoolean NotEquals (TdsDouble x, TdsDouble y)
 148                 {
 149                         return (x != y);
 150                 }
 151
 152                 public static TdsDouble Parse (string s)
 153                 {
 154                         return new TdsDouble (Double.Parse (s));
 155                 }
 156
 157                 public static TdsDouble Subtract (TdsDouble x, TdsDouble y)
 158                 {
 159                         return (x - y);
 160                 }
 161
 162                 public TdsBoolean ToTdsBoolean ()
 163                 {
 164                         return ((TdsBoolean)this);
 165                 }
 166
 167                 public TdsByte ToTdsByte ()
 168                 {
 169                         return ((TdsByte)this);
 170                 }
 171
 172                 public TdsDecimal ToTdsDecimal ()
 173                 {
 174                         return ((TdsDecimal)this);
 175                 }
 176
 177                 public TdsInt16 ToTdsInt16 ()
 178                 {
 179                         return ((TdsInt16)this);
 180                 }
 181
 182                 public TdsInt32 ToTdsInt32 ()
 183                 {
 184                         return ((TdsInt32)this);
 185                 }
 186
 187                 public TdsInt64 ToTdsInt64 ()
 188                 {
 189                         return ((TdsInt64)this);
 190                 }
 191
 192                 public TdsMoney ToTdsMoney ()
 193                 {
 194                         return ((TdsMoney)this);
 195                 }
 196
 197                 public TdsSingle ToTdsSingle ()
 198                 {
 199                         return ((TdsSingle)this);
 200                 }
 201
 202                 public TdsString ToTdsString ()
 203                 {
 204                         return ((TdsString)this);
 205                 }
 206
 207                 public override string ToString ()
 208                 {
 209                         if (this.IsNull)
 210                                 return String.Empty;
 211                         else
 212                                 return value.ToString ();
 213                 }
 214
 215                 public static TdsDouble operator + (TdsDouble x, TdsDouble y)
 216                 {
 217                         return new TdsDouble (x.Value + y.Value);
 218                 }
 219
 220                 public static TdsDouble operator / (TdsDouble x, TdsDouble y)
 221                 {
 222                         return new TdsDouble (x.Value / y.Value);
 223                 }
 224
 225                 public static TdsBoolean operator == (TdsDouble x, TdsDouble y)
 226                 {
 227                         if (x.IsNull || y.IsNull)
 228                                 return TdsBoolean.Null;
 229                         else
 230                                 return new TdsBoolean (x.Value == y.Value);
 231                 }
 232
 233                 public static TdsBoolean operator > (TdsDouble x, TdsDouble y)
 234                 {
 235                         if (x.IsNull || y.IsNull)
 236                                 return TdsBoolean.Null;
 237                         else
 238                                 return new TdsBoolean (x.Value > y.Value);
 239                 }
 240
 241                 public static TdsBoolean operator >= (TdsDouble x, TdsDouble y)
 242                 {
 243                         if (x.IsNull || y.IsNull)
 244                                 return TdsBoolean.Null;
 245                         else
 246                                 return new TdsBoolean (x.Value >= y.Value);
 247                 }
 248
 249                 public static TdsBoolean operator != (TdsDouble x, TdsDouble y)
 250                 {
 251                         if (x.IsNull || y.IsNull)
 252                                 return TdsBoolean.Null;
 253                         else
 254                                 return new TdsBoolean (!(x.Value == y.Value));
 255                 }
 256
 257                 public static TdsBoolean operator < (TdsDouble x, TdsDouble y)
 258                 {
 259                         if (x.IsNull || y.IsNull)
 260                                 return TdsBoolean.Null;
 261                         else
 262                                 return new TdsBoolean (x.Value < y.Value);
 263                 }
 264
 265                 public static TdsBoolean operator <= (TdsDouble x, TdsDouble y)
 266                 {
 267                         if (x.IsNull || y.IsNull)
 268                                 return TdsBoolean.Null;
 269                         else
 270                                 return new TdsBoolean (x.Value <= y.Value);
 271                 }
 272
 273                 public static TdsDouble operator * (TdsDouble x, TdsDouble y)
 274                 {
 275                         return new TdsDouble (x.Value * y.Value);
 276                 }
 277
 278                 public static TdsDouble operator - (TdsDouble x, TdsDouble y)
 279                 {
 280                         return new TdsDouble (x.Value - y.Value);
 281                 }
 282
 283                 public static TdsDouble operator - (TdsDouble n)
 284                 {
 285                         return new TdsDouble (-(n.Value));
 286                 }
 287
 288                 public static explicit operator TdsDouble (TdsBoolean x)
 289                 {
 290                         if (x.IsNull)
 291                                 return Null;
 292                         else
 293                                 return new TdsDouble ((double)x.ByteValue);
 294                 }
 295
 296                 public static explicit operator double (TdsDouble x)
 297                 {
 298                         return x.Value;
 299                 }
 300
 301                 public static explicit operator TdsDouble (TdsString x)
 302                 {
 303                         return TdsDouble.Parse (x.Value);
 304                 }
 305
 306                 public static implicit operator TdsDouble (double x)
 307                 {
 308                         return new TdsDouble (x);
 309                 }
 310
 311                 public static implicit operator TdsDouble (TdsByte x)
 312                 {
 313                         if (x.IsNull)
 314                                 return Null;
 315                         else
 316                                 return new TdsDouble ((double)x.Value);
 317                 }
 318
 319                 public static implicit operator TdsDouble (TdsDecimal x)
 320                 {
 321                         if (x.IsNull)
 322                                 return Null;
 323                         else
 324                                 return new TdsDouble ((double)x.Value);
 325                 }
 326
 327                 public static implicit operator TdsDouble (TdsInt16 x)
 328                 {
 329                         if (x.IsNull)
 330                                 return Null;
 331                         else
 332                                 return new TdsDouble ((double)x.Value);
 333                 }
 334
 335                 public static implicit operator TdsDouble (TdsInt32 x)
 336                 {
 337                         if (x.IsNull)
 338                                 return Null;
 339                         else
 340                                 return new TdsDouble ((double)x.Value);
 341                 }
 342
 343                 public static implicit operator TdsDouble (TdsInt64 x)
 344                 {
 345                         if (x.IsNull)
 346                                 return Null;
 347                         else
 348                                 return new TdsDouble ((double)x.Value);
 349                 }
 350
 351                 public static implicit operator TdsDouble (TdsMoney x)
 352                 {
 353                         if (x.IsNull)
 354                                 return Null;
 355                         else
 356                                 return new TdsDouble ((double)x.Value);
 357                 }
 358
 359                 public static implicit operator TdsDouble (TdsSingle x)
 360                 {
 361                         if (x.IsNull)
 362                                 return Null;
 363                         else
 364                                 return new TdsDouble ((double)x.Value);
 365                 }
 366
 367                 #endregion
 368         }
 369 }
 370