rt/emul/mini/src/main/resources/org/apidesign/vm4brwsr/emul/lang/java_lang_Number.js
author Jaroslav Tulach <jaroslav.tulach@apidesign.org>
Wed, 27 Jan 2016 21:24:22 +0100
changeset 1871 bcbc4c03d35d
parent 1870 790cc8784820
child 1872 df5db062f180
permissions -rw-r--r--
Direct access to compare64 as well
Martin@438
     1
// empty line needed here
Martin@439
     2
jaroslav@912
     3
(function(numberPrototype) {
jaroslav@1857
     4
    function add32(x, y) {
jaroslav@1857
     5
        return (x + y) | 0;
jaroslav@912
     6
    };
jaroslav@1858
     7
    function mul32(x, y) {
jaroslav@1858
     8
        return (((x * (y >> 16)) << 16) + x * (y & 0xFFFF)) | 0;
jaroslav@912
     9
    };
jaroslav@912
    10
    var __m32 = 0xFFFFFFFF;
Martin@582
    11
jaroslav@912
    12
    numberPrototype.next32 = function(low) {
jaroslav@912
    13
        if (this === 0) {
jaroslav@912
    14
            return low;
jaroslav@912
    15
        }
jaroslav@912
    16
        var l = new Number(low);
jaroslav@912
    17
        l.hi = this | 0;
jaroslav@912
    18
        return l;
jaroslav@912
    19
    };
lubomir@778
    20
jaroslav@912
    21
    numberPrototype.high32 = function() {
jaroslav@912
    22
        return this.hi ? this.hi : (Math.floor(this / (__m32 + 1))) | 0;
jaroslav@912
    23
    };
jaroslav@912
    24
    numberPrototype.toFP = function() {
jaroslav@912
    25
        return this.hi ? this.hi * (__m32 + 1) + this : this;
jaroslav@912
    26
    };
jaroslav@912
    27
    numberPrototype.toLong = function() {
jaroslav@912
    28
        var hi = (this / (__m32 + 1)) | 0;
jaroslav@912
    29
        var low = (this % (__m32 + 1)) | 0;
jaroslav@912
    30
        if (low < 0) {
jaroslav@912
    31
            low += __m32 + 1;
jaroslav@912
    32
        }
Martin@607
    33
jaroslav@912
    34
        if (this < 0) {
jaroslav@912
    35
            hi -= 1;
Martin@698
    36
        }
Martin@607
    37
Martin@615
    38
        return hi.next32(low);
Martin@615
    39
    };
Martin@615
    40
jaroslav@912
    41
    numberPrototype.toExactString = function() {
jaroslav@912
    42
        if (this.hi) {
jaroslav@912
    43
            // check for Long.MIN_VALUE
jaroslav@912
    44
            if ((this.hi == (0x80000000 | 0)) && (this == 0)) {
jaroslav@912
    45
                return '-9223372036854775808';
jaroslav@912
    46
            }
jaroslav@912
    47
            var res = 0;
jaroslav@912
    48
            var a = [6, 9, 2, 7, 6, 9, 4, 9, 2, 4];
jaroslav@912
    49
            var s = '';
jaroslav@912
    50
            var digit;
jaroslav@912
    51
            var neg = this.hi < 0;
jaroslav@912
    52
            if (neg) {
jaroslav@1870
    53
                var x = neg64(this);
jaroslav@912
    54
                var hi = x.hi;
jaroslav@912
    55
                var low = x;
jaroslav@912
    56
            } else {
jaroslav@912
    57
                var hi = this.hi;
jaroslav@912
    58
                var low = this;
jaroslav@912
    59
            }
jaroslav@912
    60
            for (var i = 0; i < a.length; i++) {
jaroslav@912
    61
                res += hi * a[i];
jaroslav@912
    62
                var low_digit = low % 10;
jaroslav@912
    63
                digit = (res % 10) + low_digit;
jaroslav@912
    64
jaroslav@912
    65
                low = Math.floor(low / 10);
jaroslav@912
    66
                res = Math.floor(res / 10);
jaroslav@912
    67
jaroslav@912
    68
                if (digit >= 10) {
jaroslav@912
    69
                    digit -= 10;
jaroslav@912
    70
                    res++;
jaroslav@912
    71
                }
jaroslav@912
    72
                s = String(digit).concat(s);
jaroslav@912
    73
            }
jaroslav@912
    74
            s = String(res).concat(s).replace(/^0+/, '');
jaroslav@912
    75
            return (neg ? '-' : '').concat(s);
jaroslav@912
    76
        }
jaroslav@912
    77
        return String(this);
jaroslav@912
    78
    };
jaroslav@912
    79
jaroslav@1867
    80
    function add64(x, y) {
jaroslav@1867
    81
        var low = x + y;
jaroslav@912
    82
        carry = 0;
jaroslav@912
    83
        if (low > __m32) {
jaroslav@912
    84
            carry = 1;
jaroslav@912
    85
            low -= (__m32 + 1);
jaroslav@912
    86
        }
jaroslav@1867
    87
        var hi = (x.high32() + y.high32() + carry) | 0;
Martin@627
    88
        return hi.next32(low);
Martin@627
    89
    };
Martin@627
    90
jaroslav@1867
    91
    function sub64(x, y) {
jaroslav@1867
    92
        var low = x - y;
jaroslav@912
    93
        carry = 0;
jaroslav@912
    94
        if (low < 0) {
jaroslav@912
    95
            carry = 1;
jaroslav@912
    96
            low += (__m32 + 1);
jaroslav@912
    97
        }
jaroslav@1867
    98
        var hi = (x.high32() - y.high32() - carry) | 0;
Martin@628
    99
        return hi.next32(low);
Martin@628
   100
    };
Martin@628
   101
jaroslav@1867
   102
    function mul64(x, y) {
jaroslav@1867
   103
        var low = mul32(x, y);
jaroslav@912
   104
        low += (low < 0) ? (__m32 + 1) : 0;
jaroslav@1867
   105
        // first count upper 32 bits of (x.low * x.low)
jaroslav@912
   106
        var hi_hi = 0;
jaroslav@912
   107
        var hi_low = 0;
jaroslav@912
   108
        var m = 1;
jaroslav@912
   109
        for (var i = 0; i < 32; i++) {
jaroslav@1867
   110
            if (y & m) {
jaroslav@1867
   111
                hi_hi += x >>> 16;
jaroslav@1867
   112
                hi_low += x & 0xFFFF
jaroslav@912
   113
            }
jaroslav@912
   114
            hi_low >>= 1;
jaroslav@912
   115
            hi_low += (hi_hi & 1) ? 0x8000 : 0;
jaroslav@912
   116
            hi_hi >>= 1;
jaroslav@912
   117
            m <<= 1;
jaroslav@912
   118
        }
jaroslav@912
   119
        var hi = (hi_hi << 16) + hi_low;
jaroslav@912
   120
jaroslav@1867
   121
        var m1 = mul32(x.high32(), y);
jaroslav@1867
   122
        var m2 = mul32(x, y.high32());
jaroslav@1857
   123
        hi = add32(add32(hi, m1), m2);
jaroslav@912
   124
Martin@594
   125
        return hi.next32(low);
jaroslav@912
   126
    };
Martin@582
   127
jaroslav@1868
   128
    function and64(x, y) {
jaroslav@1868
   129
        var low = x & y;
jaroslav@912
   130
        low += (low < 0) ? (__m32 + 1) : 0;
jaroslav@1868
   131
        if (x.hi && y.hi) {
jaroslav@1868
   132
            var hi = x.hi & y.hi;
jaroslav@912
   133
            return hi.next32(low);
jaroslav@912
   134
        }
jaroslav@912
   135
        ;
Martin@615
   136
        return low;
jaroslav@912
   137
    };
Martin@615
   138
jaroslav@1868
   139
    function or64(x, y) {
jaroslav@1868
   140
        var low = x | y;
jaroslav@912
   141
        low += (low < 0) ? (__m32 + 1) : 0;
jaroslav@1868
   142
        if (x.hi || y.hi) {
jaroslav@1868
   143
            var hi = x.hi | y.hi;
jaroslav@912
   144
            return hi.next32(low);
jaroslav@912
   145
        }
Martin@629
   146
        return low;
jaroslav@912
   147
    };
Martin@629
   148
jaroslav@1868
   149
    function xor64(x, y) {
jaroslav@1868
   150
        var low = x ^ y;
jaroslav@912
   151
        low += (low < 0) ? (__m32 + 1) : 0;
jaroslav@1868
   152
        if (x.hi || y.hi) {
jaroslav@1868
   153
            var hi = x.hi ^ y.hi;
jaroslav@912
   154
            return hi.next32(low);
jaroslav@912
   155
        }
jaroslav@912
   156
        ;
jaroslav@912
   157
        return low;
jaroslav@912
   158
    };
Martin@630
   159
jaroslav@1869
   160
    function shl64(thiz, x) {
Martin@1352
   161
        x &= 0x3f;
jaroslav@1869
   162
        if (x == 0) return thiz;
jaroslav@912
   163
        if (x >= 32) {
jaroslav@1869
   164
            var hi = thiz << (x - 32);
jaroslav@912
   165
            return hi.next32(0);
jaroslav@912
   166
        } else {
jaroslav@1869
   167
            var hi = thiz.high32() << x;
jaroslav@1869
   168
            var low_reminder = thiz >> (32 - x);
jaroslav@912
   169
            hi |= low_reminder;
jaroslav@1869
   170
            var low = thiz << x;
jaroslav@912
   171
            low += (low < 0) ? (__m32 + 1) : 0;
jaroslav@912
   172
            return hi.next32(low);
jaroslav@912
   173
        }
jaroslav@912
   174
    };
lubomir@676
   175
jaroslav@1869
   176
    function shr64(thiz, x) {
Martin@1352
   177
        x &= 0x3f;
jaroslav@1869
   178
        if (x == 0) return thiz;
jaroslav@912
   179
        if (x >= 32) {
jaroslav@1869
   180
            var low = thiz.high32() >> (x - 32);
jaroslav@912
   181
            low += (low < 0) ? (__m32 + 1) : 0;
jaroslav@912
   182
            return low;
jaroslav@912
   183
        } else {
jaroslav@1869
   184
            var low = thiz >>> x;
jaroslav@1869
   185
            var hi_reminder = thiz.high32() << (32 - x);
jaroslav@912
   186
            low |= hi_reminder;
jaroslav@912
   187
            low += (low < 0) ? (__m32 + 1) : 0;
jaroslav@1869
   188
            var hi = thiz.high32() >> x;
jaroslav@912
   189
            return hi.next32(low);
jaroslav@912
   190
        }
jaroslav@912
   191
    };
jaroslav@912
   192
jaroslav@1869
   193
    function ushr64(thiz, x) {
Martin@1352
   194
        x &= 0x3f;
jaroslav@1869
   195
        if (x == 0) return thiz;
jaroslav@912
   196
        if (x >= 32) {
jaroslav@1869
   197
            var low = thiz.high32() >>> (x - 32);
jaroslav@912
   198
            low += (low < 0) ? (__m32 + 1) : 0;
jaroslav@912
   199
            return low;
jaroslav@912
   200
        } else {
jaroslav@1869
   201
            var low = thiz >>> x;
jaroslav@1869
   202
            var hi_reminder = thiz.high32() << (32 - x);
jaroslav@912
   203
            low |= hi_reminder;
jaroslav@912
   204
            low += (low < 0) ? (__m32 + 1) : 0;
jaroslav@1869
   205
            var hi = thiz.high32() >>> x;
jaroslav@912
   206
            return hi.next32(low);
jaroslav@912
   207
        }
jaroslav@912
   208
    };
jaroslav@1800
   209
jaroslav@1871
   210
    function compare64(x, y) {
jaroslav@1871
   211
        if (x.high32() === y.high32()) {
jaroslav@1871
   212
            return (x < y) ? -1 : ((x > y) ? 1 : 0);
jaroslav@912
   213
        }
jaroslav@1871
   214
        return (x.high32() < y.high32()) ? -1 : 1;
jaroslav@912
   215
    };
jaroslav@912
   216
jaroslav@1870
   217
    function neg64(x) {
jaroslav@1870
   218
        var hi = x.high32();
jaroslav@1870
   219
        var low = x;
jaroslav@912
   220
        if ((hi === 0) && (low < 0)) {
jaroslav@912
   221
            return -low;
jaroslav@912
   222
        }
jaroslav@912
   223
        hi = ~hi;
jaroslav@912
   224
        low = ~low;
jaroslav@912
   225
        low += (low < 0) ? (__m32 + 1) : 0;
jaroslav@912
   226
        var ret = hi.next32(low);
jaroslav@1867
   227
        return add64(ret, 1);
jaroslav@912
   228
    };
jaroslav@912
   229
    
lubomir@737
   230
    function __handleDivByZero() {
lubomir@737
   231
        var exception = new vm.java_lang_ArithmeticException;
lubomir@737
   232
        vm.java_lang_ArithmeticException(false).constructor
lubomir@737
   233
          .cons__VLjava_lang_String_2.call(exception, "/ by zero");
lubomir@737
   234
lubomir@737
   235
        throw exception;
lubomir@737
   236
    }
lubomir@737
   237
lubomir@676
   238
    function __Int64(hi32, lo32) {
lubomir@676
   239
        this.hi32 = hi32 | 0;
lubomir@676
   240
        this.lo32 = lo32 | 0;
lubomir@676
   241
lubomir@676
   242
        this.get32 = function(bitIndex) {
lubomir@676
   243
            var v0;
lubomir@676
   244
            var v1;
lubomir@676
   245
            bitIndex += 32;
lubomir@676
   246
            var selector = bitIndex >>> 5;
lubomir@676
   247
            switch (selector) {
lubomir@676
   248
                case 0:
lubomir@676
   249
                    v0 = 0;
lubomir@676
   250
                    v1 = this.lo32;
lubomir@676
   251
                    break;
lubomir@676
   252
                case 1:
lubomir@676
   253
                    v0 = this.lo32;
lubomir@676
   254
                    v1 = this.hi32;
lubomir@676
   255
                    break;
lubomir@676
   256
                case 2:
lubomir@676
   257
                    v0 = this.hi32;
lubomir@676
   258
                    v1 = 0;
lubomir@676
   259
                    break
lubomir@676
   260
                default:
lubomir@676
   261
                    return 0;
lubomir@676
   262
            }
lubomir@676
   263
lubomir@676
   264
            var shift = bitIndex & 31;
lubomir@676
   265
            if (shift === 0) {
lubomir@676
   266
                return v0;
lubomir@676
   267
            }
lubomir@676
   268
lubomir@676
   269
            return (v1 << (32 - shift)) | (v0 >>> shift);
lubomir@676
   270
        }
lubomir@676
   271
lubomir@676
   272
        this.get16 = function(bitIndex) {
lubomir@676
   273
            return this.get32(bitIndex) & 0xffff;
lubomir@676
   274
        }
lubomir@676
   275
lubomir@676
   276
        this.set16 = function(bitIndex, value) {
lubomir@676
   277
            bitIndex += 32;
lubomir@676
   278
            var shift = bitIndex & 15;
lubomir@676
   279
            var svalue = (value & 0xffff) << shift; 
lubomir@676
   280
            var smask = 0xffff << shift;
lubomir@676
   281
            var selector = bitIndex >>> 4;
lubomir@676
   282
            switch (selector) {
lubomir@676
   283
                case 0:
lubomir@676
   284
                    break;
lubomir@676
   285
                case 1:
lubomir@676
   286
                    this.lo32 = (this.lo32 & ~(smask >>> 16))
lubomir@676
   287
                                    | (svalue >>> 16);
lubomir@676
   288
                    break;
lubomir@676
   289
                case 2:
lubomir@676
   290
                    this.lo32 = (this.lo32 & ~smask) | svalue;
lubomir@676
   291
                    break;
lubomir@676
   292
                case 3:
lubomir@676
   293
                    this.lo32 = (this.lo32 & ~(smask << 16))
lubomir@676
   294
                                    | (svalue << 16);
lubomir@676
   295
                    this.hi32 = (this.hi32 & ~(smask >>> 16))
lubomir@676
   296
                                    | (svalue >>> 16);
lubomir@676
   297
                    break;
lubomir@676
   298
                case 4:
lubomir@676
   299
                    this.hi32 = (this.hi32 & ~smask) | svalue;
lubomir@676
   300
                    break;
lubomir@676
   301
                case 5:
lubomir@676
   302
                    this.hi32 = (this.hi32 & ~(smask << 16))
lubomir@676
   303
                                    | (svalue << 16);
lubomir@676
   304
                    break;
lubomir@676
   305
            }
lubomir@676
   306
        }
lubomir@676
   307
lubomir@676
   308
        this.getDigit = function(index, shift) {
lubomir@676
   309
            return this.get16((index << 4) - shift);
lubomir@676
   310
        }
lubomir@676
   311
lubomir@676
   312
        this.getTwoDigits = function(index, shift) {
lubomir@676
   313
            return this.get32(((index - 1) << 4) - shift);
lubomir@676
   314
        }
lubomir@676
   315
lubomir@676
   316
        this.setDigit = function(index, shift, value) {
lubomir@676
   317
            this.set16((index << 4) - shift, value);
lubomir@676
   318
        }
lubomir@676
   319
lubomir@676
   320
        this.countSignificantDigits = function() {
lubomir@676
   321
            var sd;
lubomir@676
   322
            var remaining;
lubomir@676
   323
lubomir@676
   324
            if (this.hi32 === 0) {
lubomir@676
   325
                if (this.lo32 === 0) {
lubomir@676
   326
                    return 0;
lubomir@676
   327
                }
lubomir@676
   328
lubomir@676
   329
                sd = 2;
lubomir@676
   330
                remaining = this.lo32;
lubomir@676
   331
            } else {
lubomir@676
   332
                sd = 4;
lubomir@676
   333
                remaining = this.hi32;
lubomir@676
   334
            }
lubomir@676
   335
lubomir@676
   336
            if (remaining < 0) {
lubomir@676
   337
                return sd;
lubomir@676
   338
            }
lubomir@676
   339
lubomir@676
   340
            return (remaining < 65536) ? sd - 1 : sd;
lubomir@676
   341
        }
lubomir@676
   342
        
lubomir@676
   343
        this.toNumber = function() {
lubomir@676
   344
            var lo32 = this.lo32;
lubomir@676
   345
            if (lo32 < 0) {
lubomir@676
   346
                lo32 += 0x100000000;
lubomir@676
   347
            }
lubomir@676
   348
lubomir@676
   349
            return this.hi32.next32(lo32);
lubomir@676
   350
        }
lubomir@676
   351
    }
lubomir@676
   352
lubomir@676
   353
    function __countLeadingZeroes16(number) {
lubomir@676
   354
        var nlz = 0;
lubomir@676
   355
lubomir@676
   356
        if (number < 256) {
lubomir@676
   357
            nlz += 8;
lubomir@676
   358
            number <<= 8;
lubomir@676
   359
        }
lubomir@676
   360
lubomir@676
   361
        if (number < 4096) {
lubomir@676
   362
            nlz += 4;
lubomir@676
   363
            number <<= 4;
lubomir@676
   364
        }
lubomir@676
   365
lubomir@676
   366
        if (number < 16384) {
lubomir@676
   367
            nlz += 2;
lubomir@676
   368
            number <<= 2;
lubomir@676
   369
        }
lubomir@676
   370
lubomir@676
   371
        return (number < 32768) ? nlz + 1 : nlz;
lubomir@676
   372
    }
lubomir@676
   373
    
lubomir@676
   374
    // q = u / v; r = u - q * v;
lubomir@676
   375
    // v != 0
lubomir@676
   376
    function __div64(q, r, u, v) {
lubomir@676
   377
        var m = u.countSignificantDigits();
lubomir@676
   378
        var n = v.countSignificantDigits();
lubomir@676
   379
lubomir@676
   380
        q.hi32 = q.lo32 = 0;
lubomir@676
   381
lubomir@676
   382
        if (n === 1) {
lubomir@676
   383
            // v has single digit
lubomir@676
   384
            var vd = v.getDigit(0, 0);
lubomir@676
   385
            var carry = 0;
lubomir@676
   386
            for (var i = m - 1; i >= 0; --i) {
lubomir@676
   387
                var ui = (carry << 16) | u.getDigit(i, 0);
lubomir@676
   388
                if (ui < 0) {
lubomir@676
   389
                    ui += 0x100000000;
lubomir@676
   390
                }
lubomir@676
   391
                var qi = (ui / vd) | 0;
lubomir@676
   392
                q.setDigit(i, 0, qi);
lubomir@676
   393
                carry = ui - qi * vd;
lubomir@676
   394
            }
lubomir@676
   395
lubomir@676
   396
            r.hi32 = 0;
lubomir@676
   397
            r.lo32 = carry;
lubomir@676
   398
            return;
lubomir@676
   399
        }
lubomir@676
   400
lubomir@676
   401
        r.hi32 = u.hi32;  
lubomir@676
   402
        r.lo32 = u.lo32;
lubomir@676
   403
lubomir@676
   404
        if (m < n) {
lubomir@676
   405
            return;
lubomir@676
   406
        }
lubomir@676
   407
lubomir@676
   408
        // Normalize
lubomir@676
   409
        var nrm = __countLeadingZeroes16(v.getDigit(n - 1, 0));
lubomir@676
   410
lubomir@676
   411
        var vd1 = v.getDigit(n - 1, nrm);                
lubomir@676
   412
        var vd0 = v.getDigit(n - 2, nrm);
lubomir@676
   413
        for (var j = m - n; j >= 0; --j) {
lubomir@676
   414
            // Calculate qj estimate
lubomir@676
   415
            var ud21 = r.getTwoDigits(j + n, nrm);
lubomir@676
   416
            var ud2 = ud21 >>> 16;
lubomir@676
   417
            if (ud21 < 0) {
lubomir@676
   418
                ud21 += 0x100000000;
lubomir@676
   419
            }
lubomir@676
   420
lubomir@676
   421
            var qest = (ud2 === vd1) ? 0xFFFF : ((ud21 / vd1) | 0);
lubomir@676
   422
            var rest = ud21 - qest * vd1;
lubomir@676
   423
lubomir@676
   424
            // 0 <= (qest - qj) <= 2
lubomir@676
   425
lubomir@676
   426
            // Refine qj estimate
lubomir@676
   427
            var ud0 = r.getDigit(j + n - 2, nrm);
lubomir@676
   428
            while ((qest * vd0) > ((rest * 0x10000) + ud0)) {
lubomir@676
   429
                --qest;
lubomir@676
   430
                rest += vd1;
lubomir@676
   431
            }
lubomir@676
   432
lubomir@676
   433
            // 0 <= (qest - qj) <= 1
lubomir@676
   434
            
lubomir@676
   435
            // Multiply and subtract
lubomir@676
   436
            var carry = 0;
lubomir@676
   437
            for (var i = 0; i < n; ++i) {
lubomir@676
   438
                var vi = qest * v.getDigit(i, nrm);
lubomir@676
   439
                var ui = r.getDigit(i + j, nrm) - carry - (vi & 0xffff);
lubomir@676
   440
                r.setDigit(i + j, nrm, ui);
lubomir@676
   441
                carry = (vi >>> 16) - (ui >> 16);
lubomir@676
   442
            }
lubomir@676
   443
            var uj = ud2 - carry;
lubomir@676
   444
lubomir@676
   445
            if (uj < 0) {
lubomir@676
   446
                // qest - qj = 1
lubomir@676
   447
lubomir@676
   448
                // Add back
lubomir@676
   449
                --qest;
lubomir@676
   450
                var carry = 0;
lubomir@676
   451
                for (var i = 0; i < n; ++i) {
lubomir@676
   452
                    var ui = r.getDigit(i + j, nrm) + v.getDigit(i, nrm)
lubomir@676
   453
                                 + carry;
lubomir@676
   454
                    r.setDigit(i + j, nrm, ui);
lubomir@676
   455
                    carry = ui >> 16;
lubomir@676
   456
                }
lubomir@676
   457
                uj += carry;
lubomir@676
   458
            }
lubomir@676
   459
lubomir@676
   460
            q.setDigit(j, 0, qest);
lubomir@676
   461
            r.setDigit(j + n, nrm, uj);
lubomir@676
   462
        }
lubomir@676
   463
    }
lubomir@737
   464
jaroslav@1867
   465
    function div64(x, y) {
lubomir@676
   466
        var negateResult = false;
lubomir@676
   467
        var u, v;
lubomir@737
   468
jaroslav@1867
   469
        if ((x.high32() & 0x80000000) !== 0) {
jaroslav@1870
   470
            u = neg64(x);
lubomir@676
   471
            negateResult = !negateResult;
lubomir@676
   472
        } else {
jaroslav@1867
   473
            u = x;
lubomir@676
   474
        }
lubomir@676
   475
jaroslav@1867
   476
        if ((y.high32() & 0x80000000) !== 0) {
jaroslav@1870
   477
            v = neg64(y);
lubomir@676
   478
            negateResult = !negateResult;
lubomir@676
   479
        } else {
jaroslav@1867
   480
            v = y;
lubomir@676
   481
        }
lubomir@676
   482
jaroslav@1867
   483
        if ((v === 0) && (v.high32() === 0)) {
lubomir@737
   484
            __handleDivByZero();
lubomir@676
   485
        }
lubomir@676
   486
lubomir@676
   487
        if (u.high32() === 0) {
lubomir@676
   488
            if (v.high32() === 0) {
lubomir@676
   489
                var result = (u / v) | 0;
jaroslav@1870
   490
                return negateResult ? neg64(result) : result;
lubomir@676
   491
            }
lubomir@676
   492
lubomir@676
   493
            return 0;
lubomir@676
   494
        }
lubomir@676
   495
lubomir@676
   496
        var u64 = new __Int64(u.high32(), u);
lubomir@676
   497
        var v64 = new __Int64(v.high32(), v);
lubomir@676
   498
        var q64 = new __Int64(0, 0);
lubomir@676
   499
        var r64 = new __Int64(0, 0);
lubomir@676
   500
lubomir@676
   501
        __div64(q64, r64, u64, v64);
lubomir@676
   502
lubomir@676
   503
        var result = q64.toNumber();
jaroslav@1870
   504
        return negateResult ? neg64(result) : result;
lubomir@676
   505
    }
lubomir@676
   506
jaroslav@1868
   507
    function mod64(x, y) {
lubomir@676
   508
        var negateResult = false;
lubomir@676
   509
        var u, v;
lubomir@676
   510
        
jaroslav@1870
   511
        if ((x.high32() & 0x80000000) !== 0) {
jaroslav@1870
   512
            u = neg64(x);
lubomir@676
   513
            negateResult = !negateResult;
lubomir@676
   514
        } else {
jaroslav@1868
   515
            u = x;
lubomir@676
   516
        }
lubomir@676
   517
jaroslav@1870
   518
        if ((y.high32() & 0x80000000) !== 0) {
jaroslav@1870
   519
            v = neg64(y);
lubomir@676
   520
        } else {
jaroslav@1868
   521
            v = y;
lubomir@676
   522
        }
lubomir@676
   523
jaroslav@1870
   524
        if ((v === 0) && (v.high32() === 0)) {
lubomir@737
   525
            __handleDivByZero();
lubomir@676
   526
        }
lubomir@676
   527
lubomir@676
   528
        if (u.high32() === 0) {
lubomir@676
   529
            var result = (v.high32() === 0) ? (u % v) : u;
jaroslav@1870
   530
            return negateResult ? neg64(result) : result;
lubomir@676
   531
        }
lubomir@676
   532
lubomir@676
   533
        var u64 = new __Int64(u.high32(), u);
lubomir@676
   534
        var v64 = new __Int64(v.high32(), v);
lubomir@676
   535
        var q64 = new __Int64(0, 0);
lubomir@676
   536
        var r64 = new __Int64(0, 0);
lubomir@676
   537
lubomir@676
   538
        __div64(q64, r64, u64, v64);
lubomir@676
   539
lubomir@676
   540
        var result = r64.toNumber();
jaroslav@1870
   541
        return negateResult ? neg64(result) : result;
lubomir@676
   542
    }
jaroslav@1866
   543
jaroslav@1866
   544
    var b = numberPrototype['__bit64'] = {};
jaroslav@1867
   545
    b.add64 = add64;
jaroslav@1867
   546
    b.sub64 = sub64;
jaroslav@1867
   547
    b.mul64 = mul64;
jaroslav@1867
   548
    b.div64 = div64;
jaroslav@1868
   549
    b.mod64 = mod64;
jaroslav@1868
   550
    b.and64 = and64;
jaroslav@1868
   551
    b.or64 = or64;
jaroslav@1868
   552
    b.xor64 = xor64;
jaroslav@1870
   553
    b.neg64 = neg64;
jaroslav@1869
   554
    b.shl64 = shl64;
jaroslav@1869
   555
    b.shr64 = shr64;
jaroslav@1869
   556
    b.ushr64 = ushr64;
jaroslav@1871
   557
    b.compare64 = compare64;
lubomir@678
   558
})(Number.prototype);
jaroslav@832
   559
jaroslav@832
   560
vm.java_lang_Number(false);