rt/emul/mini/src/main/resources/org/apidesign/vm4brwsr/emul/lang/java_lang_Number.js
author Jaroslav Tulach <jaroslav.tulach@apidesign.org>
Mon, 25 Jan 2016 08:14:42 +0100
changeset 1858 4dea14fafc31
parent 1857 f1344425bcb1
child 1866 5447274f0321
permissions -rw-r--r--
Speeding up sieve by directly resolving all 32-bit number operations
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
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    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) {
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    53
                var x = this.neg64();
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                var hi = x.hi;
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    55
                var low = x;
jaroslav@912
    56
            } else {
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    57
                var hi = this.hi;
jaroslav@912
    58
                var low = this;
jaroslav@912
    59
            }
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    60
            for (var i = 0; i < a.length; i++) {
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    61
                res += hi * a[i];
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                var low_digit = low % 10;
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                digit = (res % 10) + low_digit;
jaroslav@912
    64
jaroslav@912
    65
                low = Math.floor(low / 10);
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                res = Math.floor(res / 10);
jaroslav@912
    67
jaroslav@912
    68
                if (digit >= 10) {
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    69
                    digit -= 10;
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    70
                    res++;
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                }
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                s = String(digit).concat(s);
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    73
            }
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    74
            s = String(res).concat(s).replace(/^0+/, '');
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    75
            return (neg ? '-' : '').concat(s);
jaroslav@912
    76
        }
jaroslav@912
    77
        return String(this);
jaroslav@912
    78
    };
jaroslav@912
    79
jaroslav@912
    80
    numberPrototype.add64 = function(x) {
jaroslav@912
    81
        var low = this + x;
jaroslav@912
    82
        carry = 0;
jaroslav@912
    83
        if (low > __m32) {
jaroslav@912
    84
            carry = 1;
jaroslav@912
    85
            low -= (__m32 + 1);
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    86
        }
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    87
        var hi = (this.high32() + x.high32() + carry) | 0;
Martin@627
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        return hi.next32(low);
Martin@627
    89
    };
Martin@627
    90
jaroslav@912
    91
    numberPrototype.sub64 = function(x) {
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        var low = this - x;
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    93
        carry = 0;
jaroslav@912
    94
        if (low < 0) {
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            carry = 1;
jaroslav@912
    96
            low += (__m32 + 1);
jaroslav@912
    97
        }
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    98
        var hi = (this.high32() - x.high32() - carry) | 0;
Martin@628
    99
        return hi.next32(low);
Martin@628
   100
    };
Martin@628
   101
jaroslav@912
   102
    numberPrototype.mul64 = function(x) {
jaroslav@1858
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        var low = mul32(this, x);
jaroslav@912
   104
        low += (low < 0) ? (__m32 + 1) : 0;
jaroslav@912
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        // first count upper 32 bits of (this.low * x.low)
jaroslav@912
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        var hi_hi = 0;
jaroslav@912
   107
        var hi_low = 0;
jaroslav@912
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        var m = 1;
jaroslav@912
   109
        for (var i = 0; i < 32; i++) {
jaroslav@912
   110
            if (x & m) {
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   111
                hi_hi += this >>> 16;
jaroslav@912
   112
                hi_low += this & 0xFFFF
jaroslav@912
   113
            }
jaroslav@912
   114
            hi_low >>= 1;
jaroslav@912
   115
            hi_low += (hi_hi & 1) ? 0x8000 : 0;
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   116
            hi_hi >>= 1;
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   117
            m <<= 1;
jaroslav@912
   118
        }
jaroslav@912
   119
        var hi = (hi_hi << 16) + hi_low;
jaroslav@912
   120
jaroslav@1858
   121
        var m1 = mul32(this.high32(), x);
jaroslav@1858
   122
        var m2 = mul32(this, x.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@912
   128
    numberPrototype.and64 = function(x) {
jaroslav@912
   129
        var low = this & x;
jaroslav@912
   130
        low += (low < 0) ? (__m32 + 1) : 0;
jaroslav@912
   131
        if (this.hi && x.hi) {
jaroslav@912
   132
            var hi = this.hi & x.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@912
   139
    numberPrototype.or64 = function(x) {
jaroslav@912
   140
        var low = this | x;
jaroslav@912
   141
        low += (low < 0) ? (__m32 + 1) : 0;
jaroslav@912
   142
        if (this.hi || x.hi) {
jaroslav@912
   143
            var hi = this.hi | x.hi;
jaroslav@912
   144
            return hi.next32(low);
jaroslav@912
   145
        }
jaroslav@912
   146
        ;
Martin@629
   147
        return low;
jaroslav@912
   148
    };
Martin@629
   149
jaroslav@912
   150
    numberPrototype.xor64 = function(x) {
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   151
        var low = this ^ x;
jaroslav@912
   152
        low += (low < 0) ? (__m32 + 1) : 0;
jaroslav@912
   153
        if (this.hi || x.hi) {
jaroslav@912
   154
            var hi = this.hi ^ x.hi;
jaroslav@912
   155
            return hi.next32(low);
jaroslav@912
   156
        }
jaroslav@912
   157
        ;
jaroslav@912
   158
        return low;
jaroslav@912
   159
    };
Martin@630
   160
jaroslav@912
   161
    numberPrototype.shl64 = function(x) {
Martin@1352
   162
        x &= 0x3f;
Martin@1352
   163
        if (x == 0) return this;
jaroslav@912
   164
        if (x >= 32) {
jaroslav@912
   165
            var hi = this << (x - 32);
jaroslav@912
   166
            return hi.next32(0);
jaroslav@912
   167
        } else {
jaroslav@912
   168
            var hi = this.high32() << x;
jaroslav@912
   169
            var low_reminder = this >> (32 - x);
jaroslav@912
   170
            hi |= low_reminder;
jaroslav@912
   171
            var low = this << x;
jaroslav@912
   172
            low += (low < 0) ? (__m32 + 1) : 0;
jaroslav@912
   173
            return hi.next32(low);
jaroslav@912
   174
        }
jaroslav@912
   175
    };
lubomir@676
   176
jaroslav@912
   177
    numberPrototype.shr64 = function(x) {
Martin@1352
   178
        x &= 0x3f;
Martin@1352
   179
        if (x == 0) return this;
jaroslav@912
   180
        if (x >= 32) {
jaroslav@912
   181
            var low = this.high32() >> (x - 32);
jaroslav@912
   182
            low += (low < 0) ? (__m32 + 1) : 0;
jaroslav@912
   183
            return low;
jaroslav@912
   184
        } else {
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   185
            var low = this >>> x;
jaroslav@912
   186
            var hi_reminder = this.high32() << (32 - x);
jaroslav@912
   187
            low |= hi_reminder;
jaroslav@912
   188
            low += (low < 0) ? (__m32 + 1) : 0;
jaroslav@912
   189
            var hi = this.high32() >> x;
jaroslav@912
   190
            return hi.next32(low);
jaroslav@912
   191
        }
jaroslav@912
   192
    };
jaroslav@912
   193
jaroslav@912
   194
    numberPrototype.ushr64 = function(x) {
Martin@1352
   195
        x &= 0x3f;
Martin@1352
   196
        if (x == 0) return this;
jaroslav@912
   197
        if (x >= 32) {
jaroslav@912
   198
            var low = this.high32() >>> (x - 32);
jaroslav@912
   199
            low += (low < 0) ? (__m32 + 1) : 0;
jaroslav@912
   200
            return low;
jaroslav@912
   201
        } else {
jaroslav@912
   202
            var low = this >>> x;
jaroslav@912
   203
            var hi_reminder = this.high32() << (32 - x);
jaroslav@912
   204
            low |= hi_reminder;
jaroslav@912
   205
            low += (low < 0) ? (__m32 + 1) : 0;
jaroslav@912
   206
            var hi = this.high32() >>> x;
jaroslav@912
   207
            return hi.next32(low);
jaroslav@912
   208
        }
jaroslav@912
   209
    };
jaroslav@1800
   210
jaroslav@912
   211
    numberPrototype.compare64 = function(x) {
jaroslav@912
   212
        if (this.high32() === x.high32()) {
jaroslav@912
   213
            return (this < x) ? -1 : ((this > x) ? 1 : 0);
jaroslav@912
   214
        }
jaroslav@912
   215
        return (this.high32() < x.high32()) ? -1 : 1;
jaroslav@912
   216
    };
jaroslav@912
   217
jaroslav@912
   218
    numberPrototype.neg64 = function() {
jaroslav@912
   219
        var hi = this.high32();
jaroslav@912
   220
        var low = this;
jaroslav@912
   221
        if ((hi === 0) && (low < 0)) {
jaroslav@912
   222
            return -low;
jaroslav@912
   223
        }
jaroslav@912
   224
        hi = ~hi;
jaroslav@912
   225
        low = ~low;
jaroslav@912
   226
        low += (low < 0) ? (__m32 + 1) : 0;
jaroslav@912
   227
        var ret = hi.next32(low);
jaroslav@912
   228
        return ret.add64(1);
jaroslav@912
   229
    };
jaroslav@912
   230
    
lubomir@737
   231
    function __handleDivByZero() {
lubomir@737
   232
        var exception = new vm.java_lang_ArithmeticException;
lubomir@737
   233
        vm.java_lang_ArithmeticException(false).constructor
lubomir@737
   234
          .cons__VLjava_lang_String_2.call(exception, "/ by zero");
lubomir@737
   235
lubomir@737
   236
        throw exception;
lubomir@737
   237
    }
lubomir@737
   238
lubomir@676
   239
    function __Int64(hi32, lo32) {
lubomir@676
   240
        this.hi32 = hi32 | 0;
lubomir@676
   241
        this.lo32 = lo32 | 0;
lubomir@676
   242
lubomir@676
   243
        this.get32 = function(bitIndex) {
lubomir@676
   244
            var v0;
lubomir@676
   245
            var v1;
lubomir@676
   246
            bitIndex += 32;
lubomir@676
   247
            var selector = bitIndex >>> 5;
lubomir@676
   248
            switch (selector) {
lubomir@676
   249
                case 0:
lubomir@676
   250
                    v0 = 0;
lubomir@676
   251
                    v1 = this.lo32;
lubomir@676
   252
                    break;
lubomir@676
   253
                case 1:
lubomir@676
   254
                    v0 = this.lo32;
lubomir@676
   255
                    v1 = this.hi32;
lubomir@676
   256
                    break;
lubomir@676
   257
                case 2:
lubomir@676
   258
                    v0 = this.hi32;
lubomir@676
   259
                    v1 = 0;
lubomir@676
   260
                    break
lubomir@676
   261
                default:
lubomir@676
   262
                    return 0;
lubomir@676
   263
            }
lubomir@676
   264
lubomir@676
   265
            var shift = bitIndex & 31;
lubomir@676
   266
            if (shift === 0) {
lubomir@676
   267
                return v0;
lubomir@676
   268
            }
lubomir@676
   269
lubomir@676
   270
            return (v1 << (32 - shift)) | (v0 >>> shift);
lubomir@676
   271
        }
lubomir@676
   272
lubomir@676
   273
        this.get16 = function(bitIndex) {
lubomir@676
   274
            return this.get32(bitIndex) & 0xffff;
lubomir@676
   275
        }
lubomir@676
   276
lubomir@676
   277
        this.set16 = function(bitIndex, value) {
lubomir@676
   278
            bitIndex += 32;
lubomir@676
   279
            var shift = bitIndex & 15;
lubomir@676
   280
            var svalue = (value & 0xffff) << shift; 
lubomir@676
   281
            var smask = 0xffff << shift;
lubomir@676
   282
            var selector = bitIndex >>> 4;
lubomir@676
   283
            switch (selector) {
lubomir@676
   284
                case 0:
lubomir@676
   285
                    break;
lubomir@676
   286
                case 1:
lubomir@676
   287
                    this.lo32 = (this.lo32 & ~(smask >>> 16))
lubomir@676
   288
                                    | (svalue >>> 16);
lubomir@676
   289
                    break;
lubomir@676
   290
                case 2:
lubomir@676
   291
                    this.lo32 = (this.lo32 & ~smask) | svalue;
lubomir@676
   292
                    break;
lubomir@676
   293
                case 3:
lubomir@676
   294
                    this.lo32 = (this.lo32 & ~(smask << 16))
lubomir@676
   295
                                    | (svalue << 16);
lubomir@676
   296
                    this.hi32 = (this.hi32 & ~(smask >>> 16))
lubomir@676
   297
                                    | (svalue >>> 16);
lubomir@676
   298
                    break;
lubomir@676
   299
                case 4:
lubomir@676
   300
                    this.hi32 = (this.hi32 & ~smask) | svalue;
lubomir@676
   301
                    break;
lubomir@676
   302
                case 5:
lubomir@676
   303
                    this.hi32 = (this.hi32 & ~(smask << 16))
lubomir@676
   304
                                    | (svalue << 16);
lubomir@676
   305
                    break;
lubomir@676
   306
            }
lubomir@676
   307
        }
lubomir@676
   308
lubomir@676
   309
        this.getDigit = function(index, shift) {
lubomir@676
   310
            return this.get16((index << 4) - shift);
lubomir@676
   311
        }
lubomir@676
   312
lubomir@676
   313
        this.getTwoDigits = function(index, shift) {
lubomir@676
   314
            return this.get32(((index - 1) << 4) - shift);
lubomir@676
   315
        }
lubomir@676
   316
lubomir@676
   317
        this.setDigit = function(index, shift, value) {
lubomir@676
   318
            this.set16((index << 4) - shift, value);
lubomir@676
   319
        }
lubomir@676
   320
lubomir@676
   321
        this.countSignificantDigits = function() {
lubomir@676
   322
            var sd;
lubomir@676
   323
            var remaining;
lubomir@676
   324
lubomir@676
   325
            if (this.hi32 === 0) {
lubomir@676
   326
                if (this.lo32 === 0) {
lubomir@676
   327
                    return 0;
lubomir@676
   328
                }
lubomir@676
   329
lubomir@676
   330
                sd = 2;
lubomir@676
   331
                remaining = this.lo32;
lubomir@676
   332
            } else {
lubomir@676
   333
                sd = 4;
lubomir@676
   334
                remaining = this.hi32;
lubomir@676
   335
            }
lubomir@676
   336
lubomir@676
   337
            if (remaining < 0) {
lubomir@676
   338
                return sd;
lubomir@676
   339
            }
lubomir@676
   340
lubomir@676
   341
            return (remaining < 65536) ? sd - 1 : sd;
lubomir@676
   342
        }
lubomir@676
   343
        
lubomir@676
   344
        this.toNumber = function() {
lubomir@676
   345
            var lo32 = this.lo32;
lubomir@676
   346
            if (lo32 < 0) {
lubomir@676
   347
                lo32 += 0x100000000;
lubomir@676
   348
            }
lubomir@676
   349
lubomir@676
   350
            return this.hi32.next32(lo32);
lubomir@676
   351
        }
lubomir@676
   352
    }
lubomir@676
   353
lubomir@676
   354
    function __countLeadingZeroes16(number) {
lubomir@676
   355
        var nlz = 0;
lubomir@676
   356
lubomir@676
   357
        if (number < 256) {
lubomir@676
   358
            nlz += 8;
lubomir@676
   359
            number <<= 8;
lubomir@676
   360
        }
lubomir@676
   361
lubomir@676
   362
        if (number < 4096) {
lubomir@676
   363
            nlz += 4;
lubomir@676
   364
            number <<= 4;
lubomir@676
   365
        }
lubomir@676
   366
lubomir@676
   367
        if (number < 16384) {
lubomir@676
   368
            nlz += 2;
lubomir@676
   369
            number <<= 2;
lubomir@676
   370
        }
lubomir@676
   371
lubomir@676
   372
        return (number < 32768) ? nlz + 1 : nlz;
lubomir@676
   373
    }
lubomir@676
   374
    
lubomir@676
   375
    // q = u / v; r = u - q * v;
lubomir@676
   376
    // v != 0
lubomir@676
   377
    function __div64(q, r, u, v) {
lubomir@676
   378
        var m = u.countSignificantDigits();
lubomir@676
   379
        var n = v.countSignificantDigits();
lubomir@676
   380
lubomir@676
   381
        q.hi32 = q.lo32 = 0;
lubomir@676
   382
lubomir@676
   383
        if (n === 1) {
lubomir@676
   384
            // v has single digit
lubomir@676
   385
            var vd = v.getDigit(0, 0);
lubomir@676
   386
            var carry = 0;
lubomir@676
   387
            for (var i = m - 1; i >= 0; --i) {
lubomir@676
   388
                var ui = (carry << 16) | u.getDigit(i, 0);
lubomir@676
   389
                if (ui < 0) {
lubomir@676
   390
                    ui += 0x100000000;
lubomir@676
   391
                }
lubomir@676
   392
                var qi = (ui / vd) | 0;
lubomir@676
   393
                q.setDigit(i, 0, qi);
lubomir@676
   394
                carry = ui - qi * vd;
lubomir@676
   395
            }
lubomir@676
   396
lubomir@676
   397
            r.hi32 = 0;
lubomir@676
   398
            r.lo32 = carry;
lubomir@676
   399
            return;
lubomir@676
   400
        }
lubomir@676
   401
lubomir@676
   402
        r.hi32 = u.hi32;  
lubomir@676
   403
        r.lo32 = u.lo32;
lubomir@676
   404
lubomir@676
   405
        if (m < n) {
lubomir@676
   406
            return;
lubomir@676
   407
        }
lubomir@676
   408
lubomir@676
   409
        // Normalize
lubomir@676
   410
        var nrm = __countLeadingZeroes16(v.getDigit(n - 1, 0));
lubomir@676
   411
lubomir@676
   412
        var vd1 = v.getDigit(n - 1, nrm);                
lubomir@676
   413
        var vd0 = v.getDigit(n - 2, nrm);
lubomir@676
   414
        for (var j = m - n; j >= 0; --j) {
lubomir@676
   415
            // Calculate qj estimate
lubomir@676
   416
            var ud21 = r.getTwoDigits(j + n, nrm);
lubomir@676
   417
            var ud2 = ud21 >>> 16;
lubomir@676
   418
            if (ud21 < 0) {
lubomir@676
   419
                ud21 += 0x100000000;
lubomir@676
   420
            }
lubomir@676
   421
lubomir@676
   422
            var qest = (ud2 === vd1) ? 0xFFFF : ((ud21 / vd1) | 0);
lubomir@676
   423
            var rest = ud21 - qest * vd1;
lubomir@676
   424
lubomir@676
   425
            // 0 <= (qest - qj) <= 2
lubomir@676
   426
lubomir@676
   427
            // Refine qj estimate
lubomir@676
   428
            var ud0 = r.getDigit(j + n - 2, nrm);
lubomir@676
   429
            while ((qest * vd0) > ((rest * 0x10000) + ud0)) {
lubomir@676
   430
                --qest;
lubomir@676
   431
                rest += vd1;
lubomir@676
   432
            }
lubomir@676
   433
lubomir@676
   434
            // 0 <= (qest - qj) <= 1
lubomir@676
   435
            
lubomir@676
   436
            // Multiply and subtract
lubomir@676
   437
            var carry = 0;
lubomir@676
   438
            for (var i = 0; i < n; ++i) {
lubomir@676
   439
                var vi = qest * v.getDigit(i, nrm);
lubomir@676
   440
                var ui = r.getDigit(i + j, nrm) - carry - (vi & 0xffff);
lubomir@676
   441
                r.setDigit(i + j, nrm, ui);
lubomir@676
   442
                carry = (vi >>> 16) - (ui >> 16);
lubomir@676
   443
            }
lubomir@676
   444
            var uj = ud2 - carry;
lubomir@676
   445
lubomir@676
   446
            if (uj < 0) {
lubomir@676
   447
                // qest - qj = 1
lubomir@676
   448
lubomir@676
   449
                // Add back
lubomir@676
   450
                --qest;
lubomir@676
   451
                var carry = 0;
lubomir@676
   452
                for (var i = 0; i < n; ++i) {
lubomir@676
   453
                    var ui = r.getDigit(i + j, nrm) + v.getDigit(i, nrm)
lubomir@676
   454
                                 + carry;
lubomir@676
   455
                    r.setDigit(i + j, nrm, ui);
lubomir@676
   456
                    carry = ui >> 16;
lubomir@676
   457
                }
lubomir@676
   458
                uj += carry;
lubomir@676
   459
            }
lubomir@676
   460
lubomir@676
   461
            q.setDigit(j, 0, qest);
lubomir@676
   462
            r.setDigit(j + n, nrm, uj);
lubomir@676
   463
        }
lubomir@676
   464
    }
lubomir@737
   465
lubomir@676
   466
    numberPrototype.div64 = function(x) {
lubomir@676
   467
        var negateResult = false;
lubomir@676
   468
        var u, v;
lubomir@737
   469
lubomir@676
   470
        if ((this.high32() & 0x80000000) != 0) {
lubomir@676
   471
            u = this.neg64();
lubomir@676
   472
            negateResult = !negateResult;
lubomir@676
   473
        } else {
lubomir@676
   474
            u = this;        
lubomir@676
   475
        }
lubomir@676
   476
lubomir@676
   477
        if ((x.high32() & 0x80000000) != 0) {
lubomir@676
   478
            v = x.neg64();
lubomir@676
   479
            negateResult = !negateResult;
lubomir@676
   480
        } else {
lubomir@676
   481
            v = x;
lubomir@676
   482
        }
lubomir@676
   483
lubomir@778
   484
        if ((v == 0) && (v.high32() === 0)) {
lubomir@737
   485
            __handleDivByZero();
lubomir@676
   486
        }
lubomir@676
   487
lubomir@676
   488
        if (u.high32() === 0) {
lubomir@676
   489
            if (v.high32() === 0) {
lubomir@676
   490
                var result = (u / v) | 0;
lubomir@676
   491
                return negateResult ? result.neg64() : result; 
lubomir@676
   492
            }
lubomir@676
   493
lubomir@676
   494
            return 0;
lubomir@676
   495
        }
lubomir@676
   496
lubomir@676
   497
        var u64 = new __Int64(u.high32(), u);
lubomir@676
   498
        var v64 = new __Int64(v.high32(), v);
lubomir@676
   499
        var q64 = new __Int64(0, 0);
lubomir@676
   500
        var r64 = new __Int64(0, 0);
lubomir@676
   501
lubomir@676
   502
        __div64(q64, r64, u64, v64);
lubomir@676
   503
lubomir@676
   504
        var result = q64.toNumber();
lubomir@676
   505
        return negateResult ? result.neg64() : result; 
lubomir@676
   506
    }
lubomir@676
   507
lubomir@676
   508
    numberPrototype.mod64 = function(x) {
lubomir@676
   509
        var negateResult = false;
lubomir@676
   510
        var u, v;
lubomir@676
   511
        
lubomir@676
   512
        if ((this.high32() & 0x80000000) != 0) {
lubomir@676
   513
            u = this.neg64();
lubomir@676
   514
            negateResult = !negateResult;
lubomir@676
   515
        } else {
lubomir@676
   516
            u = this;        
lubomir@676
   517
        }
lubomir@676
   518
lubomir@676
   519
        if ((x.high32() & 0x80000000) != 0) {
lubomir@676
   520
            v = x.neg64();
lubomir@676
   521
        } else {
lubomir@676
   522
            v = x;
lubomir@676
   523
        }
lubomir@676
   524
lubomir@778
   525
        if ((v == 0) && (v.high32() === 0)) {
lubomir@737
   526
            __handleDivByZero();
lubomir@676
   527
        }
lubomir@676
   528
lubomir@676
   529
        if (u.high32() === 0) {
lubomir@676
   530
            var result = (v.high32() === 0) ? (u % v) : u;
lubomir@676
   531
            return negateResult ? result.neg64() : result; 
lubomir@676
   532
        }
lubomir@676
   533
lubomir@676
   534
        var u64 = new __Int64(u.high32(), u);
lubomir@676
   535
        var v64 = new __Int64(v.high32(), v);
lubomir@676
   536
        var q64 = new __Int64(0, 0);
lubomir@676
   537
        var r64 = new __Int64(0, 0);
lubomir@676
   538
lubomir@676
   539
        __div64(q64, r64, u64, v64);
lubomir@676
   540
lubomir@676
   541
        var result = r64.toNumber();
lubomir@676
   542
        return negateResult ? result.neg64() : result; 
lubomir@676
   543
    }
lubomir@678
   544
})(Number.prototype);
jaroslav@832
   545
jaroslav@832
   546
vm.java_lang_Number(false);